Metal heating coil encased within a metal outer tube , Self regulating coil to reduce the risk of the glow plug over-heating, Manufactured to OEM standards.

These glow plugs are like your engine's best friend, with a metal heating coil nestled snugly within a metal outer tube. It's like having a built-in heater for your engine, ensuring a warm and smooth start every time. Plus, the self-regulating coil is like your engine's guardian angel, reducing the risk of overheating and giving you peace of mind on those frosty mornings. Designed and manufactured to OEM standards, you can trust that these glow plugs are the real deal. Whether you're a trucker hitting the highway or just need your daily diesel dose, the NGK Metal Glow Plug is the dependable companion you've been searching for.