Replace Volkswagen Glow plug diesel & Volkswagen Plugging in block heater. Purchase Volkswagen Plug in heater. Order Volkswagen Glow Plug. Maintaining the glow plugs in your Volkswagen is essential for smooth engine starts, especially in colder climates. Regularly check your glow plugs for signs of wear, such as difficulty starting the engine, decreased fuel efficiency, or an engine misfire, as these are clear indicators that a replacement may be necessary. To extend the lifespan of your glow plugs, ensure your engine is regularly serviced and avoid short trips that prevent the engine from reaching optimal operating temperatures. When choosing new glow plugs, opt for durable materials like metal alloys that can withstand high temperatures and pressure. Ceramic glow plugs, although pricier, offer superior performance and longevity. Installation requires precision, so always adhere to Volkswagen's torque specifications to prevent damage. A well-maintained glow plug system ensures your Volkswagen starts reliably, providing an effortless ignition experience every time.