Wide Application — This JDG476 JDG477 JDG478 seal installer tool fits for JD models 3010 3020 4000 4010 4020 4320 4520 4620 4230 4430 4630 8430 4040 4240 4440 4640 4840 8440 (4050 W/466 ONLY) 4250 4450 4650 4850 8450 4055 4255 4455 4555 4755 4955 4560 4760 4960.