Looking for a replacement Radiator Cap, mine leaks. This is an aftermarket radiator on of the ones with the plastic tanks. I am not sure what brand it is.

This radiator takes a larger sized cap than both of my other Yotas. The cap I have - which is junk - is 2 1/4 in diameter, the OE cap is 1 3/4 in diameter.

Since "parts guy" at parts stores don't really know anything about cars any more (they can only find you a part if you can tell them the year/make/model) I am having trouble. When they search on my vehicle (87 4Runner) they always only return a single cap, and it is too small. I gotta believe there is a cap out there that will fit.

I have searched the forums and I have seen discussion about Stant 10329 vs Motorad T13, but I could not conclude from my searches what part number I might need.

LC engineering references 2 different sized caps, and I could order the "larger" cap from them, but then I'd hafta pay shipping and it'd be a week.

Any and all help appreciated.

 

Hi
had same prob on my v6 toyota. toyota listed one did not fit. so went on ebay found rad cap specialist. sent him cap diamentions £9 later with delivery i got a new well made rad cap.

 

Mine is a Motorad ST13 about 2.25 in across. I had to pinch the ears a bit so it wouldn't leak.

 

Pretty sure that is the same cap I have. I pinched down the tabs ever so slightly yesterday and all is good (for now).

 

Make sure the pressure is the same as factory specs (13 PSI), when I needed the larger radiator cap they gave me a 16 PSI cap and it caused all sorts of problems.