John Deere 8230 8330 8430 8530 Tractor Starter Motor | 12V 4.8kW 11-Tooth CW | OEM RE504244

The 8030 series bought Deere a bigger frame and a heavier engine, and the starter grew to suit: 316 mm from flange to nose, 11.1 kg on the scale, a 39.8 mm pinion turning eleven teeth clockwise behind a Denso OSGR reduction set. The number that covers the whole run is RE504244, from the 8230 of 2006 to the 8530 of 2009, with the 9230 staying on until 2011. Twelve volts and 4.8 kW is the published rating, though European catalogues sometimes quote 4.0 kW for a variant of the same family.

OEM and Search References

• Primary John Deere reference: RE504244, which is the number this listing describes, confirmed against the plate on the outgoing motor

• Deere supersessions and related stock numbers: RE506105, RE528619, RE529661, RE65191, RE70473, RE70959, SE501853, SE501866, SE501867 and TY24440

• Denso and aftermarket references: 228000-6540, 228000-9140, DSN2007 and housing number 228401-9140, with WAI 18568N and AS-PL S6186 as crossover equivalents

• Ratings: 12 V, 4.8 kW, 11 teeth, CW, OSGR reduction, 316 mm overall, 39.8 mm pinion diameter and 11.1 kg, with a 4.0 kW variant listed in some European catalogues

• TractorData lists the 8230 through 8530 across 2006 to 2009 and the 9230 from 2007 to 2011, with the 8330T and 8430T crawlers taking the same unit as their wheeled sisters

• Also seen on: the 9670 and 9770 STS combines, where the same number appears with no confirmed year range attached to it

• Search strings that land here include RE504244 starter, John Deere 8230 starter motor, 8430 starter 12V, 9230 starter and Denso DSN2007, which between them cover most of the ways a counter hand types it

Fitment and Purchase Checks

Confusion about the rating usually starts in a European catalogue, which lists a lower-output variant of this same motor while Deere's own figure stays at 4.8 kW; a 4.0 unit belongs to the family without being a substitute for this one, and that is better settled before a pallet ships than after it lands in a yard.

The number also travels further than the 8030 series, since the 9670 and 9770 STS combines carry it with no published year range anywhere, so a fitment table borrowed from a combine page may not describe the 8530 your customer actually owns. A photograph of the plate on the old motor, with the pinion measured and counted, is worth more than any of the tables.