Collection: Glow Plugs & Controllers

Glow Plugs & Controllers – Diesel Engine Starting Components

Shop replacement diesel glow plugs, glow plug control units and relays at Shop4AllParts. Explore vehicle-specific diesel engine starting components for compatible cars, SUVs, vans and commercial vehicles.

Glow plugs are electrical heating components that assist combustion during cold starting in diesel engines.

Depending on the engine design, they may also operate after starting to support combustion and emissions-control functions.

Glow plug control units and relays manage electrical power supplied to the glow plugs according to the vehicle's system design.