Owner reviews for radiator cap

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MotoRad: Radiator cap

MISHIMOTO: Radiator cap

OEM Toyota: Radiator cap

OEM Honda: Radiator cap

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OEM Honda › Radiator cap

Yokaze2005 14 Oct 2025, 01:20

Rating 5.0

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Honda Radiator Cap 19045-PAA-A01. Accept no substitutions. Those aftermarket-OEM (Murray or whatever from O'Reilly's and Autozone) are JUNK. I've had several. I'm now on my second HONDA one, not due to design flaw but due to driving my car with a breeched head gasket for 3 years. The parts house ones NEVER lasted nearly as long (only about ten stops or so for me).

Pros: long lasting, reliable, OEM quality

Cons: aftermarket junk, short lifespan

Vehicle: Honda Civic

Part number: 19045-PAA-A01

MotoRad › Radiator cap

Whizzleteets 18 Jul 2025, 20:06

Rating 4.0

Overheat control:

I had a Motorad radiator cap until about a week ago. Worked fine just changed it for a spiffy Flex a Lite cap.

Pros: worked fine

OEM Subaru › Radiator cap

bentref11 9 Mar 2023, 00:28

Rating 5.0

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Overheat control:

Check the radiator cap. I had this same issue (though no overheating, perhaps because I was driving in sub-freezing temperatures) and after replacing the radiator cap with a $12 part, no issues since.

Pros: no issues since

Vehicle: Subaru Legacy

OEM Hyundai › Radiator cap

ThickDiscipline0 23 Feb 2023, 03:32

Rating 5.0

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Overheat control:

Replaced the rad cap with a brand new one for a Hyundai and that fixed that

Pros: fixed overheating issue

OEM Porsche › Radiator cap

Ultraflux3 2 Jun 2015, 02:47

Rating 5.0

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Overheat control:

I also got the best radiator cap I could find which was the Porsche Cayman one( 996 106 447 04 which is like 6 revisions from the original vw one) which is a way better design and much better fit than the MK1 rabbit one I had but seemed to work just fine.

Pros: better design, better fit

Vehicle: Volkswagen Corrado

Part number: 996 106 447 04

MISHIMOTO › Radiator cap

PizzaOrTacos 4 Aug 2022, 18:06

Rating 1.0

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I had a mishimoto rad cap that completely screwed up my coolant system.

Cons: screwed up coolant system

Vehicle: Subaru Forester

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