Coolant overflow tank #?

[VermontTy]

Anyone have the GM number for the factory coolant overflow tank? Thanks.

-adam

 

[jwaller]

Re: Coolant overflow tank #?

it's the same as a std S-series. you have to drill the hole for the IC yourself if you still use the stock IC.

15560958 – CAC/Radiator Overflow Reservoir

 

[VermontTy]

Re: Coolant overflow tank #?

I do need to still use the stock IC, so just drill a hole in the top of the tank and feed the overflow line from the IC into the hole? Thanks John.

 

[jwaller]

Re: Coolant overflow tank #?

no the stock bottle has a hole in the side and in the rear and has it's own special fitting that runs to a hose inside the bottle, but the system doesnt work and you have to keep topping off the ic anyway. when I had the stock upper I just deleted the line and used a std bottle.

 

[VermontTy]

Re: Coolant overflow tank #?

Got it. Same clear plastic barb threads into the rear of the tank and goes to the IC. Thanks again John.