This part basically seals and protects the glow plug itself. It's a small component, usually made of metal or a high – heat plastic, that the glow plug sits inside. It provides the electrical connection for the glow plug, and keeps combustion gases and engine fluids away from the electrical parts. Think of it as a little housing, keeping everything neat and tidy, and doing some serious work in a harsh environment. The glow plug system is critical for starting, especially in colder weather. Diesel engines don’t have a spark like gasoline engines do; instead, they rely on heat to ignite the fuel. The glow plugs heat up inside the cylinders, and the plug housing ensures they make a good connection and stay protected while doing their job. It’s a key part of that starting process. If this housing fails, you’ll likely notice a misfire, rough idle, or difficulty starting—especially when the engine is cold. Sometimes, you might even see a check engine light. Because it seals everything up, a cracked or damaged housing can let combustion gases leak, which isn’t good. It's a small part, but when it goes bad, it can cause big problems. You can find these plug housings and a lot of other service parts over at Fixparts Online, if you’re looking for a reliable source. It's often best to replace it whenever you’re replacing the glow plug itself, just to be safe. Expert assistance: Plug Housing (MPN 1254490002) is covered by a 12-month warranty!

About Bosch

Bosch is a global leader in automotive technology from Germany, celebrated for its innovative products and high-quality components. Based in Germany, Bosch drives advancements in vehicle safety and efficiency worldwide.

Why Choose Bosch?

• Bosch parts are known for being reliable and lasting a long time, which can save you money on repairs in the future. • They’re a leading supplier to car manufacturers, so you’re getting the same quality parts used in many new vehicles. • Bosch invests a lot in research and development, meaning their parts often have the latest technology for better performance. • You can find Bosch parts for a wide range of vehicles, from older models to the newest cars and trucks. Drive with confidence – choose Bosch parts at FixParts Online.