Iridium Vs Platinum Spark Plugs: Which One Should You Use?

Iridium spark plugs have a central electrode with an iridium tip to produce a hotter, more intense flame. This results in cleaner emissions from a vehicle and better combustion in the engine of a vehicle. Iridium spark plugs are extremely durable spark plugs that provide excellent efficiency and performance. They have a high melting point as well.

When you use iridium spark plugs, there is an improvement in the acceleration of your vehicle. This is because there is a faster response in the throttle operations of your vehicle.

The high conductivity of iridium alloy electrodes in the iridium spark plugs increases spark concentration, resulting in faster ignition. Hence, there is an improvement in an engine’s starting characteristics.

Iridium spark plugs improve your vehicle’s fuel mileage. This is because the ignition is faster when you use an iridium spark plug which allows your vehicle’s fuel to burn more efficiently.

Because of iridium's high strength, iridium spark plugs provide a durable installation. Also, iridium spark plugs are worn resistant which makes them less prone to degradation and sudden failures.

The iridium spark plug doesn't need as much voltage to generate electrical current. This results in a more reliable and consistent spark during ignition.

A platinum spark plug consists of a center electrode which is made of platinum, welded to the tip of the electrode. More heat is produced by platinum spark plugs, which aids in preventing the accumulation of debris. There are two types of platinum plugs:

• A single platinum spark plug consists of a platinum disc that is welded to the center electrode.

• The double platinum spark plug which is made with platinum disc on the center electrode and ground electrode.

A platinum spark plug is made with platinum electrodes that can handle heat better than a copper spark plug. Platinum has a melting point of up to 3,215 degrees Fahrenheit while copper’s melting point is just 1,984 degrees Fahrenheit.

Platinum spark plugs develop more heat which helps in reducing the build-up of carbon deposits and debris. Carbon deposits on the electrodes decrease the lifespan of a spark plug and can lead to hard starts, decreased acceleration, and engine misfiring which are the most common symptoms of bad spark plugs.

Platinum spark plugs are very affordable spark plugs.

The main difference between iridium and platinum spark plug is that iridium is used to make the central electrode in the former, whereas platinum is used in the latter. The difference between these two occurs due to the difference between the two metals.

Check your owner's manual for the recommended spark plugs for your specific vehicle. If your owner's manual specifies iridium spark plugs, do not downgrade to platinum or copper spark plugs; doing so will result in poor engine performance. You can also seek advice from your mechanic when it comes to selecting the best spark plug for your vehicle.