Ignition and Glow Plugs

Ignition and glow plugs cover the glow plugs and glow time control units that start a diesel tractor in the cold, and the ignition coils and spark plugs for petrol-engined machines and older tractors. Parts are listed by John Deere and Hella part number with fitment.

6 products

Types of part in this range

Glow plugs by thread and voltage. Glow time control units and relays. Ignition coils and switch units for petrol engines. Spark plugs by reach and heat range.

Choosing glow plugs

Replace glow plugs as a set and match the voltage: a 12V plug in a 24V system burns out on the first cold start. Check the thread size and reach against the old plug. The ignition switches for these circuits are under switches, and batteries and chargers under batteries and charging.

Guides for ignition and glow plugs