- Heavy duty replacement for OEM parts number J-41221-A / 8-9439-6856-0, J-41220 and J-41268 / 8-9439-6858-0.
- Specialty tool kit designed for 2003 - 2009 Chevrolet Kodiak and GMC TopKick with 7.8L Duramax 7800, 4HF1, 4HG1, 4HK1, 4HE1, 6HH1, 6HK1, 6HE1 compatible with Isuzu inline 6 cylinder turbo diesel.
- This seal driver master set includes all needed tools for the removal and installation process of the front crank oil seals BZ4219E, BZ4219F, 10950.285 and rear main seals BZ4365E, 10950.286 and wear sleeve / oil slingers.
- Fits for Isuzu semi truck models NPR, NKR, NPR71, NPR75, NQR450, NQR75 FSR, FVR, FRR, FTR, FSR32 and FRR550. Use the proper installation sleeve for the seals to be installed to their proper height with a draw screw working off a centering adapter.
- Oni Tools ensures quality automotive products and stands behind top of the line manufacturing. We guarantee our products to last and offer support for our mechanics along the way.
Bought the Duramax Front & Rear Crank Seal Tool Set, and the repair was simple and effective for the GMC 7.8L diesel engine.
Effortless transaction. Likewise, it was done smoothly as anticipated. Great 41221-A alternative. Well Done!
Easy to use
The rear crank seal tool set is excellent and easy to use.
Great quality, works great, performs great for my Duramax 7800.
Front & Rear Crank Seal Remover & Installer Toolset. Very Affordable the quality is very durable and works well for my Duramax 4HF1.