Dayco

Dayco is a global leader in the research, design, manufacturing and distribution of essential engine products, drive systems and services for automobiles, trucks etc. Dayco.com is a leader in the Original Equipment Market partnering with global automotive and industrial manufacturers to design, develop and produce high quality products for light duty, industrial, off-highway and recreational vehicles. In 2007, Dayco introduced the first Timing Belt-in- Oil system for automotive applications, a technological breakthrough that directly addresses customer focus on lower emissions, increased fuel efficiency and less tension on the drives.

Search Dayco Categories

Belt Tensioner Pulley

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Belts

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Idler Pulleys

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Power Steering Belt

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Serpentine Belt

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Tensioner Assembly

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Timing Belt

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Timing Belt Kit

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Timing Chain

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Belts by Dayco

Belts by Dayco

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In business since 1905, Dayco is a global leader in the automotive parts manufacturing industry.
Dayco strives to be first-to-market on parts and is guided by our primary business strategy to anticipate and satisfy the needs of our customers by providing innovative, quality products and services.

Automotive

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Having supplied the original equipment market for over 90 years, Dayco is a major supplier to original equipment heavy duty truck and equipment manufacturers around the world and we understand the product engineering that is required to meet the performance standards of heavy duty applications.

Heavy Duty

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Snowmobiles are only as good as the belts wrapped around their clutches as the drive belt is key to delivering power from the motor to the snow. Dayco's high-performance snowmobile drive belts offer a range of options specific to your level of riding.

Snowmobile

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Dayco's purpose-built ATV belts are manufactured to enhance your ATV's overall performance while engineered to meet any riding style, whether mudding, climbing rocky terrain at low speeds or cruising along a casual trail ride.

ATV

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Dayco has set the standard for quality, performance and service life for power transmission products used in the industrial marketplace. Ranging from low horsepower machinery to high-output agriculture equipment, Dayco's Industrial products cover all applications that use belts to transmit power in the industrial, farm, fleet, lawn and garden, construction and oil field industries.

Industrial

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Dayco entered the lawn and garden belt manufacturing industry to provide the robust coverage needed with today's long list of lawn and garden machinery built by original equipment manufacturers.
Ranging from residential to commercial, and from light duty self-propelled push mowers to light duty riding mowers, Dayco's lawn and garden belts are engineered to meet the rugged start-and-stop operation of lawn equipment while supplying unmatched, superior performance.

Serpentine Belts by Dayco

Dayco Poly Rib Serpentine Belts

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Dayco approaches the market differently from most of its competition, believing that one serpentine belt construction will not perform best with all applications.Built for passenger cars and light-duty trucks, Dayco’s extensive line of Poly Rib serpentine belts are engineered for high mileage, demanding drives found in today’s vehicles. As the manufacturer of the first original equipment multi-ribbed serpentine belt, Dayco’s commitment to automotive product excellence and innovation is unwavering. The Dayco Poly Rib W Profile serpentine belt is the most innovative advancement in serpentine belt design in more than 30 years. Developed through extensive laboratory and actual road mileage testing, this unique rib profile EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and help eliminate noisy belt conditions. Constructed with aramid-reinforced EPDM compounds, the Dayco W Poly Rib serpentine belt delivers more than just OE-required quality. It delivers the solution to troublesome drive problems. Dayco manufactures other serpentine belt constructions for application-specific belt drive systems, such as the ela stretch belt, special deep rib belts for certain import applications, Linear Groove Technology belts and double-sided belts. ela Stretch belt – Designed for direct replacement on accessory drives requiring stretch-type belts, Dayco ela belts are specifically designed for two- to four-point drives where the elastic belt design maintains constant tension on the drive. Deep Rib belt – Dayco discovered that certain import applications perform quietest when the rib depth of the serpentine belt is increased. Dayco added layers of material, increasing the rib depth of the Deep Rib belt, resulting in the best drive belt option for specific import vehicle applications. Double-sided belt– Designed for multiple accessory drives that require the transmission of power from both sides of the belt. The Double-Sided belt, which Dayco introduced to the automotive aftermarket, features a construction that uses a highly fiber-loaded compound on both sides of the belt to maximize load carrying requirements while minimizing pulley misalignment noise.

Dayco No Slack Automatic Belt Tensioner

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Serpentine belt drives consist of a single belt that powers most, if not all, of the engine’s accessories. Designed to maintain constant tension on serpentine belt drives, the Dayco Automatic Belt Tensioner features the original flat spring design engineered to provide less operating range variations in tension. This innovative design reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed and lessens the risk of belt noise and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A PTFE strip wound within the spring resists abrasion and the flat spring is coated to resist rust.
Other superior design features include:
* Steel locator pin (where the application demands)
* Heavy duty cast aluminum spring case that resists cracking and fatigue
* Heavy duty cast aluminum arm offers additional strength and less distortion
* Steel pivot tube (where the application demands) provides additional strength for critical torque requirements
* Thermoplastic rubber spring slot plug (where applicable) helps keep out harmful contaminants
* Lubricated nylon pivot tube bushing and spring bushing for quieter performance
* Rubber “O” ring which seals against dust and grime (where applicable)
* Zinc-coated mounting bolt that resists rust (where applicable)
* Dayco also manufactures a variety of round spring and hydraulic-controlled tensioners depending on the original equipment design and application requirements.

Dayco Belt Tension Gauges

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The No. 1 complaint with belts today is noise, and the No. 1 cause of belt noise is misalignment. Designed to diagnose misalignment, tension and wear within a belt drive system, the Dayco Belt Diagnostic Kit has all the tools to properly identify misalignment, belt tension and worn multi-rib belts. Kit includes: Belt tension gauge, two piece laser alignment tool, belt wear gauges, tension chart, replacement battery and battery installation wrench.
Part Number 93874

Dayco Awearness Gauge

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Improperly tensioned belts cause slippage, squealing, heat build-up and premature failure. Dayco engineers recommend careful belt tensioning. After a new belt has been installed, run the engine for 3 to 5 minutes to seat the belt.
* Krikit Pocket Gauge for V-Belts - Part Number 93865
* Krikit II Pocket Gauge for Ribbed Belts - Part Number 93866

Dayco Belt Installation Tool

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By simply placing the notched area lengthwise over the ribbed section of the belt, this pocket size device quickly and easily identifies the potential of serpentine belt failure. If there are more than four cracks per inch in the belt, trade practice recommends the belt be replaced.
Part Number 047337

Dayco Ela Belt Installation Tool

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This time saving tool from Dayco gives the technician the control and extended reach necessary when installing serpentine belts. The tool has also been designed to help install V-belts and timing belts that are located in hard-to-access areas. The two-pin design provides convenient belt push/pull capability while the handle gives the technician the twisting control required to install belts in confined or restricted areas.
Part Number 93871

Dayco Awearness Gauge

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The Dayco ela™ belt installation tool is required when specified on certain ela™ (stretch-to-fit) belt applications. Some ela™ belts requires only a simple zip tie to install, so please verify the Dayco ela™ belt installation tool is required for your application. Do not attempt to install by prying the belt on the pulleys.
• ela™ belt and belt tool sold separately
• Can be used on multiple Dayco ela™ (stretch-to-fit) belts
• Includes reusable mounting bolt
• Includes installation instructions
Part Number 93875

AUTOMOTIVE DAYCO(r) NO SLACK(r)IDLER/TENSIONER PULLEYS

AUTOMOTIVE DAYCO(r) NO SLACK(r)IDLER/TENSIONER PULLEYS

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Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design engineering, and manufacturing of our pulleys. In addition to our spun steel pulleys, Dayco also provides specially formulated glass-filled polymers to ensure a high strength, wear-resistant plastic pulley designed to replace serpentine and V-belt idler and tensioner pulleys.The use of state-of-the-art three dimensional computer aided design (CAD) and finite element analysis (FEA) guarantees the optimal design and maximum structural integrity for both plastic and steel pulleys. Pulleys with smoother surfaces and tighter dimensional tolerances translate into less vibration and therefore longer belt life. Lubricated bearings and high temperature seals assure peak performance, which is the most critical element of a pulley's service life.

AUTOMOTIVEDAYCO(r) NO SLACK(r)AUTOMATIC BELT TENSIONER

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Serpentine belt drives consist of a single belt that powers most, if not all, of the engine's accessories. Designed to maintain constant tension on serpentine belt drives, the Dayco Automatic Belt Tensioner features the original flat spring design engineered to provide less operating range variations in tension. This innovative design reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed and lessens the risk of belt noise and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A PTFE strip wound within the spring resists abrasion and the flat spring is coated to resist rust.
Other superior design features include:
* Steel locator pin (where the application demands)
* Heavy duty cast aluminum spring case that resists cracking and fatigue
* Heavy duty cast aluminum arm offers additional strength and less distortion
* Steel pivot tube (where the application demands) provides additional strength for critical torque requirements
* Thermoplastic rubber spring slot plug (where applicable) helps keep out harmful contaminants
* Lubricated nylon pivot tube bushing and spring bushing for quieter performance
* Rubber "O" ring which seals against dust and grime (where applicable)
* Zinc-coated mounting bolt that resists rust (where applicable)
* Dayco also manufactures a variety of round spring and hydraulic-controlled tensioners depending on the original equipment design and application requirements.
* Visit our Training section for Tensioner Installation Videos.

DAYCO(r) POLY RIB(r) ARAMID SERPENTINE BELT

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As the demand for higher output engines and tighter engine packaging increases, Original Equipment Manufacturers have elected to use serpentine belts with aramid tensile cord on specific applications that may have noise, vibration or harshness issues, or in drive systems in which tensioner take-up is minimal.The Dayco Poly Rib Aramid Serpentine Belt has been engineered to maintain a quiet, vibration-free belt drive system. Unlike polyester-corded belts, the Dayco Poly Rib Aramid Serpentine Belt will resist the expected elongations, especially during high accessory loading. This unique feature of length stability and minimal stretch can aid in those difficult drives where span vibrations and tensioner movements are excessive, resulting in reduced belt noise. The Dayco Poly Rib Aramid Serpentine Belt also features Dayco's W Profile, the solution to troublesome drive problems, and is built with Dayco's specially designed EPDM rubber compounds that resist cracking and perform better under extreme temperature ranges.

Tensioner Assembly by Dayco

Tensioner Assembly by Dayco

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Serpentine belt drives consist of a single belt that powers most, if not all, of the engine's accessories. Designed to maintain constant tension on serpentine belt drives, the Dayco Automatic Belt Tensioner features the original flat spring design engineered to provide less operating range variations in tension. This innovative design reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed and lessens the risk of belt noise and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A PTFE strip wound within the spring resists abrasion and the flat spring is coated to resist rust.
Other superior design features include:
* Steel locator pin (where the application demands)
* Heavy duty cast aluminum spring case that resists cracking and fatigue
* Heavy duty cast aluminum arm offers additional strength and less distortion
* Steel pivot tube (where the application demands) provides additional strength for critical torque requirements
* Thermoplastic rubber spring slot plug (where applicable) helps keep out harmful contaminants
* Lubricated nylon pivot tube bushing and spring bushing for quieter performance
* Rubber "O" ring which seals against dust and grime (where applicable)
* Zinc-coated mounting bolt that resists rust (where applicable)
Dayco also manufactures a variety of round spring and hydraulic-controlled tensioners depending on the original equipment design and application requirements. Visit our Training section for Tensioner Installation Videos.

DAYCO(r) NO SLACK(r)IDLER/TENSIONER PULLEYS

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* Dayco's reputation for top performance idler and tensioner pulleys is a result of advanced automotive technologies employed in materials research, design engineering, and manufacturing of our pulleys. In addition to our spun steel pulleys, Dayco also provides specially formulated glass-filled polymers to ensure a high strength, wear-resistant plastic pulley designed to replace serpentine and V-belt idler and tensioner pulleys.
The use of state-of-the-art three dimensional computer aided design (CAD) and finite element analysis (FEA) guarantees the optimal design and maximum structural integrity for both plastic and steel pulleys. Pulleys with smoother surfaces and tighter dimensional tolerances translate into less vibration and therefore longer belt life. Lubricated bearings and high temperature seals assure peak performance, which is the most critical element of a pulley's service life.

DAYCO(r) POLY RIB(r)SERPENTINE BELTS

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Dayco approaches the market differently from most of its competition, believing that one serpentine belt construction will not perform best with all applications. Built for passenger cars and light-duty trucks, Dayco's extensive line of Poly Rib serpentine belts are engineered for high mileage, demanding drives found in today's vehicles. As the manufacturer of the first original equipment multi-ribbed serpentine belt, Dayco's commitment to automotive product excellence and innovation is unwavering. The Dayco Poly Rib W Profile serpentine belt is the most innovative advancement in serpentine belt design in more than 30 years. Developed through extensive laboratory and actual road mileage testing, this unique rib profile EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and help eliminate noisy belt conditions. Constructed with aramid-reinforced EPDM compounds, the Dayco W Poly Rib serpentine belt delivers more than just OE-required quality. It delivers the solution to troublesome drive problems. Dayco manufactures other serpentine belt constructions for application-specific belt drive systems, such as the ela(r) stretch belt, special deep rib belts for certain import applications, Linear Groove Technology belts and double-sided belts.
* ela Stretch belt - Designed for direct replacement on accessory drives requiring stretch-type belts, Dayco ela belts are specifically designed for two- to four-point drives where the elastic belt design maintains constant tension on the drive.
* Deep Rib belt - Dayco discovered that certain import applications perform quietest when the rib depth of the serpentine belt is increased. Dayco added layers of material, increasing the rib depth of the Deep Rib belt, resulting in the best drive belt option for specific import vehicle applications.
* Double-sided belt- Designed for multiple accessory drives that require the transmission of power from both sides of the belt. The Double-Sided belt, which Dayco introduced to the automotive aftermarket, features a construction that uses a highly fiber-loaded compound on both sides of the belt to maximize load carrying requirements while minimizing pulley misalignment noise.

SERPENTINE BELT KIT

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As the demand for higher output engines and tighter engine packaging increases, Original Equipment Manufacturers have elected to use serpentine belts with aramid tensile cord on specific applications that may have noise, vibration or harshness issues, or in drive systems in which tensioner take-up is minimal. The Dayco Poly Rib Aramid Serpentine Belt has been engineered to maintain a quiet, vibration-free belt drive system. Unlike polyester-corded belts, the Dayco Poly Rib Aramid Serpentine Belt will resist the expected elongations, especially during high accessory loading. This unique feature of length stability and minimal stretch can aid in those difficult drives where span vibrations and tensioner movements are excessive, resulting in reduced belt noise. The Dayco Poly Rib Aramid Serpentine Belt also features Dayco's W Profile, the solution to troublesome drive problems, and is built with Dayco's specially designed EPDM rubber compounds that resist cracking and perform better under extreme temperature ranges.

Overrunning Decoupler Pulley by Gates

AlternatorDecoupler Pulleys (OAD)

With the increasing amount of accessories requiring extra electrical power, such as GPS navigation systems and heated and cooled power seats, overrunning alternator pulleys (OAPs) and overrunning alternator decoupler pulleys (OADs) are becoming increasingly popular on many late model vehicles due to increased alternator loads and engine torsional fluctuations. While solving a similar problem, OAPs and OADs do have different characteristics and operate differently within a vehicle's front end accessory drive. Dayco OAPs allow the alternator to 'freewheel' when the belt speed drops and are engineered with one-way clutches that allows the rotational inertia of the alternator to "overrun" during any belt deceleration event. Dayco OAPs, which are designed for long service life, decrease drive belt vibration and reduce belt slippage during rapid acceleration or deceleration, resulting in reduced stress on the drive belt and other accessories as well as increased alternator and drive belt life. Dayco OADs have one-way clutching capability which allows the OAD to isolate and dampen the drive from the alternator upon deceleration. Similar to Dayco OAPs, OADs reduce belt slippage during rapid acceleration or deceleration, reduce stress on the drive belt and other accessories and reduce belt noise, all while increasing alternator and belt drive life as well as improving the variation of drive belt tension.
Note: OAPs and OADs are application-specific replacement parts and if a vehicle requires an OAP or an OAD, the same category of pulley must be installed. Proper tools must be used to remove and install OAPs and OADs.

Dayco(r) OAP and OAD Tool Kit

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Overrunning alternator pulleys (OAP) and overrunning alternator decoupler pulleys (OAD) should only be removed from the alternator using the proper tools.TheDayco OAP and OAD Tool Kit contains all of the tools needed to remove and fit a new OAP or OAD. Made from the highest quality materials, our tool kit can be used with hand ratchets or impact guns. This 13-piece kit features interchangeable components to work on almost all vehicles and comes in a handy molded carrying case.
Kit Includes:
* Removal and Installation Instructions
* OAP/OAD Connectors in 33T Spline and 17mm Hex
* Alternator Shaft Connectors in T40, T50, M8, M10, 8 Hex and 10 Hex
Note: OAPs and OADs are application-specific replacement parts, and if a vehicle requires an OAP or an OAD, the same category of pulley must be installed. Proper tools must be used to remove and install OAPs and OADs.
Part No. 93877

Timing Chain Kits by Dayco

Timing Chain Kits by Dayco

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Dayco's experience in transmission systems has also resulted in another new product this year:Timing Chain Kits. Dayco's long tradition and renowned expertise in the field of power transmission, together with our understanding of the importance of quality, testing and reliability, have led to the successful creation of a range of Timing Chain Kits. The Kit components (chain, hydraulic tensioner, sprockets, guides) have been designed to conform not only to individual technical specifications but also to operate in perfect synergy, to ensure high performance, efficiency, low noise and durability of the complete transmission system.
Features and benefits of the Dayco timing chain KITS:
* Synergetic design of the whole KIT (chain, guide, tensioner, gears, seals)
* High strength and reliability proven on test benches and vehicle fleets
* Use of state-of-the-art technology:
* Chains: use of high-grade steel and expert know-how on the three types of chain used in automotive applications:
* Tensioners: precision mechanical manufacturing to obtain minimum internal clearances for a better control of oil drawing times
* Guides: use of fibreglass-reinforced high-resistance plastics
* Gears: high-grade stamped or sintered steel - both subjected to specific heat treatments to improve surface hardening of the toothed areas

Belt Kits by Dayco

Dayco(r) Timing Belt Kits

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Designed for the replacement of worn or damaged original equipment manufacturer timing belts, Dayco Timing Belt Kits include belts, tensioners and idler pulleys. Dayco offers one of the most complete lines of timing belt kits in the market and all kit components and belts are manufactured to the critical original equipment quality, fit, form, and function requirements demanded by both domestic and foreign nameplate vehicles. Dayco also offers Timing Belt Kits with Seals. These kits may include timing belt(s), tensioner(s), hydraulic tensioner, balance shaft belt, pulley(s), cam and crankshaft seals and lubricant. Trilingual installation instructions and an extended warranty are also included with all Dayco Timing Belt Kits.

Dayco(r) Timing Component Kit

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Designed for replacement of worn or damaged original equipment timing belt tensioners and idler pulleys, Dayco Timing Component Kits include pre-packaged tensioners, idler pulleys and instructions, each matched to a specific make, model and year of vehicle to assure replacement part accuracy and time-saving convenience. Dayco Timing Component Kit tensioners and idler pulleys are manufactured to meet the critical original equipment quality, fit, form and function requirements demanded by both domestic and imported vehicle manufacturers to ensure long-lasting peak performance. Dayco Timing Component Kits eliminate the need to pay high automotive dealership tensioner and idler pulley prices, the time wasted traveling to and from the automotive dealership and the frustration experienced from the lack of automotive dealership replacement tensioner and idler pulley inventories. Dayco Timing Component Kits are in stock and readily available through all Dayco aftermarket channels of distribution.

DAYCO(r) TIMING BELT WATER PUMP KIT

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Designed for the replacement of worn or damaged timing belts, tensioners, belt idlers, hydraulic actuators and water pumps, the Dayco Timing Belt Water Pump Kit is a convenient solution when replacing all of the major components in a timing belt job. All kit components are manufactured at the highest quality facilities the automotive market has to offer and pre-packaged for safe delivery. These kits include trilingual installation instructions and also come with an extended warranty to ensure that the professional and do-it-yourselfer are confident they are using the very best products for their timing belt replacement. Dayco offers the most complete line of timing belt water pump kits in the market, which include:
• Most competitive pricing in the industry
• Most complete application coverage
• Trilingual installation instructions included
• Full detailed images in all E-catalogs
• OE style water pump
• Extended warranty
These application-specific kits can include timing belt, balance shaft belt, tensioner(s), pulley(s), hydraulic actuator(s), cam and crank shaft seals*, and water pump with gasket, as well as springs and hardware when applicable.

Dayco(r) Timing Seal Kits

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These Dayco stand-alone seal kits provide users with the required oil seals to complete a complex timing system job. These application-specific kits cover every application in which Dayco offers a timing belt. Kits may include cam seals, crankshaft seals and lubricant.

Dayco(r) Timing Belt Cam Tool

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The Dayco Timing Belt Cam Tool is designed for locking timing belt gears during service. To retain engine timing position during timing belt removal and installation, twin camshafts must be locked on their timing marks. The Dayco Timing Belt Cam Tool's adjustable arms fit into the gear's teeth and expand to securely hold in place gear sizes from 4" to 6" (101mm to 152mm) with gear separation up to 3" (76mm).
Part Number 93873

DAYCO(r) TENSIONER RETAINER PIN SET

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The Dayco Tensioner Retainer Pin Set is designed for the installation and maintenance of timing belt tensioners. To safely retain the hydraulic pin of a timing belt tensioner in a compressed state during servicing, Dayco recommends the use of this handy Tensioner Retainer Pin Set. Consisting of six different sized spring hardened steel pins, the set accommodates a wide variety of timing belt tensioners, including certain serpentine belt applications.
Part Number 93872

Dayco(r) Timing Belt

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It is estimated that nearly one-third, or about 70 million, vehicles currently on the road utilize a timing belt. Without proper maintenance and replacement, the timing belt can break, resulting in costly repairs. Manufactured with tough, wear-resistant fabric, high tensile strength cord and molded tooth surface, the Dayco timing belt provides consistent slip-proof power transfer and high resistance to oil and engine heat. Dayco is recognized by the automotive industry as a world leading manufacturer of timing belts. The Dayco timing belt, designed for OHC and DOHC type engines, features a molded cog design which runs quieter and is more economical. Our premium, high modulus glass fiber cord delivers precise length stability to keep the engine running smoothly over the life of the belt. The belt's compounding and tooth configurations are designed for specific applications ranging from normal service to high performance, high temperature engines where HSN compound is used. The part number includes three final digits that conform to industry standard numbering. Dayco timing belts meet all original equipment manufacturer performance requirements.

Timing Belts by Dayco

Timing Belts by Dayco

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As one of the largest timing belt manufacturers in the world, Dayco offers a variety of belt constructions suitable for any application using the latest materials and a highly engineered, patented timing belt tooth composite construction. Dayco timing belts feature a molded cog design that runs quieter and is more economical. Our premium, high modulus glass fiber cord delivers precise length stability to keep the engine running smoothly over the life of the belt.