Heater Valve

did you take it off and show it to some different parts shops? I would think a truck dealer should be able to match something up. When you find one though make sure to get the 1/4 turn and not the rotary valve.

 

Why are the 1/4 turns better?

 

They are less prone to leaking than the rotary kind.

 

good - that's the one I've got. Shut it off today. Will this improve the AC performance in the cab?

 

Plumbing stores, commercial hose dealers, Lowe's, home depot etc. There is nothing truck specific about the valve, just cap both ends of the line and take the valve with with you to check diameter.

 

It should help the AC perform better. I always turn off both valves when summer rolls around.

 

Both valves - I found one at the heater core take off by the water pump. I figured there outta be a 2nd one - wonder where it is.

 

On the n14 should be two down low,one may be behind the frame rail. Then two up high by the rear head.