Glow plugs

22 products

Glow plugs – choosing plugs for diesel engines

Glow plugs help create suitable ignition conditions in diesel engines, particularly during cold starts. This category includes selected Bosch glow plugs and products from other manufacturers.

How to select the right part

Check OE number, engine code, rated voltage, thread type, length, connector and control system. Some engines use plugs with substantially different electrical specifications that are not interchangeable.

Symptoms and service advice

Cold-start difficulties and preheating system fault codes may indicate a problem. Also inspect the relay, controller and wiring. Removing seized glow plugs requires care to avoid cylinder-head damage.

See also ignition and preheating systems and verify the part number.