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Koyo SK-C13 Radiator Cap

  • Based on 209 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, May 21
Order within 13 hours and 53 minutes
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Features

  • Radiator Cap Hyper Red Radiator Cap; For All Koyo Radiators; 16lb. Pressure Rating [Universal]

Description

Koyo Quality begins with our selection of premium OE grade materials such as: aluminum, copper, brass, and plastics. Koyo products are not only developed and tested to be resilient to harsh outside elements, but also years of under- hood heat cycling as well.


Brand: Koyo


Material: Aluminum, Brass


Exterior Finish: Painted


Item Dimensions LxWxH: 5 x 3 x 2 inches


Style: Brass


Brand: ‎Koyo


Material: ‎Aluminum, Brass


Exterior Finish: ‎Painted


Item Dimensions LxWxH: ‎5 x 3 x 2 inches


Style: ‎Brass


Item Weight: ‎0.11 Pounds


Closure Type: ‎Twist On


Manufacturer: ‎Koyo


Model: ‎Koyo Cooling Systems SK-C13


Item Weight: ‎1.76 ounces


Product Dimensions: ‎5 x 3 x 2 inches


Item model number: ‎SK-C13


Manufacturer Part Number: ‎SK-C13


OEM Part Number: ‎SK-C13


Date First Available: April 12, 2012


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fit my Koyo Rad for 2012-2015 Civic's
Needed a spare to cap to diagnose a problem with the cooling system. Both caps work perfectly.
Reviewed in the United States on June 19, 2023 by Brian

  • Appears to be excellent quality; does not fit OEM 3.0L radiator
This radiator cap appears to be very well made. I bought one hoping it would fit the OEM radiator for my 3.0L Outback, but the opening on the stock radiator is really small and the seal on this cap is not. It's definitely made for Koyo's aftermarket radiator and/or the 2.5L turbo H4 Subaru stock system (not sure on that one). I returned this one and unfortunately have no options for a 1.3 bar cap unless I replace my radiator, so I'll be sticking with the stock one, I guess. ... show more
Reviewed in the United States on August 22, 2022 by devolution

  • Pricey but excellent
It's the most expensive radiator cap I've ever purchased but I did buy the high performance koyo radiator so I didn't want to take a chance on a budget cap.
Reviewed in the United States on May 23, 2022 by Carly

  • S2000 S2k rad cap for the Koyo rad
It works great
Reviewed in the United States on November 25, 2022 by Jose Graciano R Sevilla

  • Perfect fit and quality
Fit and locked in perfectly. Looks great too 👌🏼
Reviewed in the United States on September 4, 2022 by DJ

  • Perfect Cap
Perfect fit ! Work well above expectations
Reviewed in the United States on August 20, 2022 by Joseph Keleman

  • For Koyorad Radiators
Worth the money for that added sense of security. Fit perfectly on my koyorad radiator for 2012 - 2015 civic si.
Reviewed in the United States on April 6, 2022 by Robert Barrow

  • Does what it's supposed to, high quality part.
So far so good. Works as intended on my 07 350z. Good build quality. This is one of those kinds of parts that it either works well or it doesn't, this fits my car and does what it's supposed to. Highly recommend, I have a Koyo solid aluminum radiator too, so take that into consideration as well. Radiator is significantly better than the stock one as well, so I recommend that as well. ... show more
Reviewed in the United States on March 2, 2020 by Kevin Delaney

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