In search of OEM radiator petcock drain

[killer428]

PROBLEM HAS BEEN SOLVED
I have been looking for the oem radiator petcock drain for my 2003 Cobra. My car has a aftermarket plug that needs replacement. Does anyone have the part number and a picture so I can see what I’m looking for? I tried looking at the Ford dealers sites but all that comes up is for mustang not cobra. Thanks


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[P49Y-CY]

dorman 61138

 

[Fastback]

Just did this myself, ordered 2 from my ford dealer. Took 2 or 3 days to get in. The parts lady even said "wow haven't seen this packing in awhile!"

 

[killer428]

So that’s the correct part number ? I ordered one at my local ford dealer and he couldn’t find the right one. We ordered what he thought was the correct one but no it wouldn’t fit. Thanks I’ll try that number.


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[Fastback]

It fit in my Cobra. I just did a coolant flush, and it's the original radiator. I stripped the threads putting it back in, but the cracking around the rubber backing also was a concern. So I called Evergreen Ford local to me, he had to order it in. I've had the car since 2006. 13,000 miles on it now

 

[Fastback]

here is the petcock, stock as the one that came out.

 

[MG0h3]

View attachment 1665277 here is the petcock, stock as the one that came out.

Oddly enough I just picked up the Dorman 61138 mentioned above at Oreilleys.

Didn’t want to wait 7days for Ford.

Crossed the part # on Rock Auto.


“BLM is doing God’s work”
2KblackGT

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[efnfast]

Buy the Dorman part #; it works fine and its in stock at all the autozones/etc.

 

[killer428]

Thank you everyone I ended up ordering from Ford. I thought the one I had was Dorman’s but it is the original plug. Looks identical


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[98Bird]

Thank you everyone I ended up ordering from Ford. I thought the one I had was Dorman’s but it is the original plug. Looks identical

The thread on mine is stripped also. How do you swap the new one in?

 

[Fastback]

The thread on mine is stripped also. How do you swap the new one in?

Drain coolant from radiator via thermostat housing, then Unscrew the draincock all the way, then pull a little. It will be connected to the inside of the rad with a reverse spade. Squeeze with a pair of needle nose, pull out the draincock. Push in new one in, and screw it in. You'll need to do a burp of the cooling system. Adding the coolant you will lose with the drain out.

 

[MG0h3]

Not sure I’d do anything other than remove and replace the old one. Don’t see a need to drain at the Tstat housing.

I’d still do a burp of course.


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[Fastback]

Not sure I’d do anything other than remove and replace the old one. Don’t see a need to drain at the Tstat housing.

I’d still do a burp of course.


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You'll have to contend with coolant shooting out the draincock, while trying to fiddle with getting the old one out and put a new one in. It will be messy, and coolant will spray all over your tools and hands. But it could be done without draining radiator, I guess. At the thermostat, it can be manipulated to only let a stream out. Then your good to pull the drain, with less hassle.

 

[MG0h3]

You'll have to contend with coolant shooting out the draincock, while trying to fiddle with getting the old one out and put a new one in. It will be messy, and coolant will spray all over your tools and hands. But it could be done without draining radiator, I guess. At the thermostat, it can be manipulated to only let a stream out. Then your good to pull the drain, with less hassle.

Ya I totally hear you. You’d def get wet! But I still think it would minimize the workload a tad.

But why is this guy just wanting to replace the petcock anyways? Unless it’s leaking, just wait until you’re doing something that requires you to drain the coolant.


“BLM is doing God’s work”
2KblackGT

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[efnfast]

I wouldn't open up the t-stat housing unless you have to - it does get out more coolant, and that petcock is a stupid SOB as it will spray everywhere, but the housing is very fragile and can crack easily. That was no fun finding an out-of-stock-everywhere replacement.

If you're just replacing the petcock (although I'd also burp the system too) you should be able to open the petcock and only have a small stream of liquid if you leave the coolant tank pressure cap on. If you remove the cap then expect SPLOOOGE