Massey Ferguson Tractor Starter Motor | 12V 10-Tooth | OEM 1860092M2

Massey Ferguson built the 155 and the 158 around the same Perkins engines and, with them, the same Lucas starter motor, which is why one part number covers tractors that rolled out of Beauvais across a decade — the 155 from 1970, the 158 from 1972 — and why the replacement business in these units has never slowed down. The starter sold here is listed as 1860092M2, the MF parts reference for the Lucas 12 V unit fitted to those tractors, and it is the direct replacement in specification: twelve volts, ten-tooth pinion, the three-hole mounting flange on the engine side.

OEM and Search References

• Primary MF reference: 1860092M2
• Associated cross: 1808449M2 (listed in the same box by several aftermarket catalogues)
• Buyer search terms: Massey Ferguson 155 starter, MF 158 starter motor, 1860092M2, Lucas starter MF 155, 12V tractor starter 10 tooth
• Known ratings: 12 V, ten teeth — verify against the old unit's plate and pinion before ordering; power rating and rotation direction not confirmed from an independent source for this number

Fitment and Purchase Checks

The safest route with any MF from this era is the old unit itself, because Massey Ferguson revised starter numbers often enough that even MF dealers re-check the cross tables, and the same tractor left the factory with minor variations depending on the month it was built. Take the starter off, read what the plate says, count the teeth on the pinion, and photograph the stamping if corrosion has blurred it — a clear photo settles in one email what a parts book sometimes cannot.

Fitment we can stand behind: MF 135, 150, 155, 158 and 165, the models the aftermarket catalogues list this family against, with the 155 and 158 pair confirmed through the MF factory parts listing. Dealers and workshops that send the serial number and engine type with the enquiry get a firm quote back — unit price, carton quantity, dispatch window and warranty terms for the destination market — and if anything about the old unit's plate does not match what we ship, that gets caught before the freight is booked, not after.