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If anyone reading this thread would like to do the cheap, easy, manual cut off valve method, the NAPA part # for the valve is 660-1414, clamps part # is 505-1212. I spent a total of $14.77 + tax for the valve and two 5/8" stainless steel worm gear clamps. I installed it on my 2000 F250 4x4 7.3 powerstroke next to the oil filler cap. It worked great today with outside temp. at 105 and heat index of 115. For anyone who may not know which heater hose to install it in, it is the one that carries hot water into the heater core, it will be the one coming from the engine and going toward the firewall, not the one which connects to the water pump. I mounted mine at this location for very easy accessby just reaching in over the passenger side fender. It took a total of five minutes to do. When installing make sure your clamps etc. are not touching any other metal so you won't have any rattles or abrasion.This is for the guys like myself who just want an inexpensive easy fix. Thanks to all on this thread!
Sorry edub32, I'm an "old school" guy and don't have the necessary "stuff" to do the pictures with... but I will be glad to help you any other way I can!
I just wanted to bump this back to the top again for my FTE neighbors! It has been really hot here the last few days so I closed my valve about two days ago. What a difference !! Give it a try if you haven't done an A.C. mod yet!
Yep, that's exactly what I'm doing, and yes, it does make a big difference, especially when on "MAX A.C." I think if you try it you are gonna' like it !
Thats a big ten four jim, when i get back from vacation, i,m going to do it. It was 97 here today and went out and the AC was working hard. Thanks again, reps sent.
I don't think it has any special name if I remember correctly. Keep in mind that the original post was in August of 2007. The part numbers could have changed. Just ask for a manual cutoff valve for that size heater hose. It is very simple looking. It has a flat "T" shaped handle on it about an inch to 1-1/2" long, or wide, depending on how you look at it. The valve has a pretty fine thread so it screws up and down rather slowly. The whole thing will lay in the palm of your hand. It's not big at all. GOOD LUCK !
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