So I'm putting the motor back together. I want to replace that bearing on the shaft that drives the waterpump. I has to come off anyways so that I can get the new sprocket on there. Anyone have a part number? I'm looking at the waterpump diagram and cant pinpoint exactly which one it is. Any other suggestions are welcome.

 

Help anyone?

 

with the bearing out look and see if there is a part number for the bearing or measure it and call around to find one. I have know idea what a gm part number would be proably sells as a kit. Me personaly I would put a freeze plug in and put an electric water pump in.

 

I'd just go down to the local Chevy dealer. They should have the part you need and it should only cost around $10 if that.

 

I got the whole assembly from the dealer for about $20. I have the extreme duty timing set and they even pressed off the "stock" gear and replaced it with the Extreme duty gear. The 2 gears looked the same but we did it anyhow.