Fitment Guide:
John Deere Tractor: 4040-w/ Diesel Engine, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4050-w/ 6-466 Diesel Engine, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4230-w/ Diesel Engine, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4240-w/ Diesel Engine, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4250-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4430-w/ Diesel Engine, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4440-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4450-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4630-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4640-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4650-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4840-w/ Diesel Engine, 1979-1982, Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 4850-Both Wet & Dry Clutch Applications, Easy to Adapt, Requires Minor Wiring Modifications, Improves Starter Reliability & Performance, Engine Starts Much Faster, 6125E-w/ Engine #6068, S/N , 9120