Gates 31523 Radiator Cap

Worked perfectly to resolve my leaking radiator cap on my 1995 Jeep Wrangler with the 4.0 engine. My old cap would allow coolant to drip out after a long run. This Gates radiator cap fit nice and snug with no further leaks. Price was very reasonable and it was a quick and easy fix. I've always had great luck with Gates products.

EXCELLENT FIT ON MY 1990 CHRYSLER TC RADIATOR. AS DESCRIBED, PRICE WAS RIGHT.

I recently replaced my lost radiator cap with this new one, and I couldn't be more satisfied! This cap fits perfectly and seals exceptionally well, addressing all my concerns about leaks and overheating. The installation was straightforward, and it felt secure right from the start. I’ve driven several times since installing it, and I haven’t noticed any issues—no leaks or pressure problems at all. It’s reassuring to know that my cooling system is functioning properly again. Overall, I highly recommend this radiator cap to anyone in need of a replacement. It’s a great fit, seals effectively, and provides peace of mind knowing that my vehicle is in good condition. A solid purchase!

Good product works pretty well so far

Perfect fit for 1997 C1500 Vortec 5.7L

Seal holds the pressure well. Fits perfectly. Solid construction for the cap.

Awesome

I ordered a Gates 31523 Radiator Cap back in December and my coolant got steadily lower over the summer. Performed a radiator pressure test and the radiator was fine. Then I started looking at my cap more closely and noticed a missing upper seal to seal it from the atmosphere so the radiator could not retrieve the coolant when cooling down from the reservoir. After reading the reviews here others have also noted a missing upper seal like mine. I have always trusted Gates parts, so I ordered another Gates 31523 Radiator Cap and this one had the upper seal. What I recieved in a Gates box was a Motorad T16 cap. Another problem was that the top of the cap was wobbly and not secure. The gap between the cap handle and the middle fitting was so bad that I could blow right thru the cap. See picture of the 1mm gap. On the car it seems to seal somewhat with the pressure from the spring but that is not how it should be manufactured. Both Gates radiator caps I have received so far are junk, will not last and may potentially overheat your engine. I will be ordering a Stant but looking at the pictures seems to be the same Motorad T16 cap. We’ll see and if it is as bad as the Gates will also get one star.