Engine Spares

Starter motor & alternator

Self starters, magnetic switches and charging alternators for genset and earthmoving engines. Tell us the system voltage and the engine it turns.

A new starter motor with its solenoid, pinion teeth toward the camera

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What to send us

The number stamped on the old part is the quickest route. If it has worn off, the engine or genset model and serial number usually gets us there. Photos help more than descriptions.

We cross-check whatever you send against the OEM catalogue and confirm the match with you before anything ships.

About this range

The starter turns the engine over, and the solenoid on top of it does two jobs at once: it throws the pinion into the ring gear and closes the heavy contacts that feed the motor. Gensets usually run a 24 V starting system, smaller sets 12 V, and the two are not interchangeable.

What you hear narrows it down. A single loud click with no cranking is usually the solenoid or its contacts. Slow cranking with a battery that has been tested good is more often a worn motor or a high resistance in the cables and earth strap than the battery itself. A starter that stays engaged after the key is released needs attention immediately, because it will destroy itself and the ring gear.

Magnetic switches, solenoids, brushes and drives are available separately, so a starter that has a known fault does not always need replacing whole. Alternators for the same sets are listed here too.

Products in this category

10 listed

Open one for its specification and the part numbers it covers. We stock more than we list, so send us the number even if yours isn’t here. You can also look a number up in the part number index.