Case IH Maxxum 5120 5130 5140 5150 Tractor Starter Motor | 12V 3.1kW 9-Tooth CW | OEM 114799A1

The Maxxum 5100-series was the tractor that taught a lot of farmers to trust Case IH again in the nineties, and twenty-some years on most of them are still working, which means their starters are mostly on their second or third life by now. This one is the gear-reduction unit — 12 V, 3.1 kW, nine teeth, clockwise — sold under Case IH reference 114799A1, and if your old box has a different name on it that does not mean it is the wrong part, because Bosch, Mahle, Iskra and Lester all catalogued the same machine under their own numbers.

OEM and Search References

• Primary reference: 114799A1 (Case IH)
• Substitute references: 114799A1R, A187597, 245927C93, 20513045
• Cross references: Bosch 0-001-369-007 / 019 / 025, Mahle MS271, Iskra IS0695, Lucas LRS01300 / LRS02589, Lester 17307
• Buyer search terms: 114799A1 starter, Maxxum 5120 starter motor, Case IH 5140 starter, 17307 starter 12V
• Ratings: 12 V, 3.1 kW, 9 teeth, CW — confirm against the old unit; dimensions not confirmed here

Fitment and Purchase Checks

Here is the trap worth knowing about before the money moves: Case IH fitted two genuinely different starters to the Maxxum 5120 family, this nine-tooth gear-reduction unit and a ten-tooth direct-drive unit that looks related and is not interchangeable, and both turn up in parts catalogues under numbers only a digit apart, which is how the wrong one ends up on a workbench on a Monday morning.

So match the old unit, not the model year — the pinion count and the shape of the nose will settle it in about ten seconds — and if you are a dealer or a repair shop, send the serial, the engine details and a photo of the plate across with the enquiry, because that is what turns into a quote with price, stock, dispatch and warranty terms that actually apply where you are.