Product Feature: . 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. And fits for many more AG & Industrial equipment that using the 270 404 466 6076 7.6L 8.1L engines. . High Performance: This rear oil seal installer tool will help you easily, properly & simultaneously install the Teflon unitized seal and wear sleeve on the engine rear crankshaft flange without damage and leakage. .