Looking for recommendations for an oil pump and timing chain kit for an 05H2. About to replace the water pump soon so might as well replace the above as well. Last time I did the front seal the chain had some slack but didn’t replace it then. Part# appreciated. If I should replace something else while doing all this work let me know. After this will be the rear seal which I believe is a lot of work. Never ending project with our high mileage truck.
thanks.

 

I would stay with OEM

This is what is listed at GMPartsGiant for a 05H2;

OEM Oil pump, 12710303

Timing chain, 12646386

Front cover, crank seal, 12585673

Water pump gasket, 12630223

Front engine cover gasket, 12633904

Engine oil pan gasket, 12611384, 12612350 (corrected part number)


Neal

 

Appreciate the info and quick response. Looks like I’ll be bugging you for the rear seal info as well

 

Rear main brg, seal, 89060436

 

Timken manufactures the oem seals(compare the price, same part different label)

front and rear:

 

Look @ what happens when Timken 100085 & 100470 uses the blue label box:

 

Yep, and OEM are even more expensive but are the best and offer the same service as when the truck was new

Neal

 

AC Delco is not OEM, they are the aftermarket side of GM, they offer replacement parts for GM vehicles, they are a very good alternative to OEM

Neal

 

RECAP: AcDelco distributes- GM assembles- Timken manufactures OEM.

 

You will be miles ahead if you get the rear main seal pre installed with the back plate. They can sometimes be a pain in the butt to align and if they are not just so, they will leak. Also you will have to drop transmission and transfer case to get to it.

Tim