- Master kit for servicing the front and rear crankshaft seals on 2001-2016 6.6L Duramax diesel engines
- Includes:
- 3878 Rear Crankshaft Seal Installer to press fit the rear seal
- 3879 Front Crankshaft Seal Installer to press fit the front seal
- 4042 Front Crankshaft Seal/Wear Sleeve Remover to pull the front seal without damage
- 4043 Rear Crankshaft Seal Remover with jaws to grab and remove the rear seal safely.
- Precision engineered for Duramax applications
- Installers properly fit the inner and outer seal bodies while the removers use controlled force and jaws to prevent seal and engine damage
- Services GM, Isuzu, and GMT800 HD trucks needing front and rear crankshaft seal removal and installation
- Compare 3878, 3879, 4042 and 4043 to GM factory tools J-44642, J-44645, J-44641 and J-44644
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