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🔥 Lock in peak performance with Koyo’s Hyper Red Radiator Cap!
The Koyo SK-C13 Radiator Cap is a universal, high-performance automotive part designed with premium aluminum and brass materials. It features a 16lb pressure rating to optimize cooling system efficiency and durability, fits all Koyo radiators, and boasts a vibrant hyper red finish for a sleek under-hood look. Trusted by professionals and rated 4.7 stars, it ensures reliable heat resistance and long-lasting performance.
| ASIN | B007TNIOCC |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #73,975 in Automotive ( See Top 100 in Automotive ) #59 in Automotive Replacement Radiator Standard |
| Brand | Koyo |
| Brand Name | Koyo |
| Closure Type | Twist-On |
| Color | Red |
| Compatible with Vehicle Type | Car, Motorcycle |
| Customer Reviews | 4.6 out of 5 stars 268 Reviews |
| Exterior Finish | Painted |
| Global Trade Identification Number | 00847839000753 |
| Included Components | Radiator Caps |
| Item Dimensions | 5 x 3 x 2 inches |
| Item Type Name | Radiator Caps |
| Item Weight | 1.76 ounces |
| Item dimensions L x W x H | 5 x 3 x 2 inches |
| Manufacturer | Koyo |
| Manufacturer Part Number | SKC-13 |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Aluminum, Brass |
| Material Type | Aluminum, Brass |
| Model Number | SK-C13 |
| Number of Items | 1 |
| Number of Packs | 1 |
| OEM Equivalent Part Number | SK-C13 |
| Part Interchange Info | SK-C13 |
| Style Name | Brass |
| UPC | 847839000753 |
| Unit Count | 1 Count |
| Vehicle Service Type | Car, Motorcycle |
A**D
Fixes stock Hot-Run issue with WRX
The WRX stock has a radiator cap that keeps engine hotter than necessary. This is for emissions only and robs power & response. Best $40 bucks you can spend
D**S
$$$ but good.
Fits my koyorad radiator perfectly. It's expensive but it's quality.
D**N
Research Your Car First
Make sure your car can handle this. If you still have stock rubber hoses, they WILL split somewhere and cause a rapid coolant flush.
L**R
Fits perfect
So far so good.
A**E
Got the job done
Did it’s job and has held up well so far
S**T
Ten Years Service and Counting on my Turbo Miata Track Car
I have used this cap on a Koyo radiator in my Turbo Miata track car since 2016. It has never leaked or given me any trouble, and the silicone seal inside is still in great physical condition and is still pliable. Let's see if it can go another 10 years.
K**Y
For BRZ/GT86/FRS w/ Koyo Al filler neck
If you bought a Koyorad All Aluminum Radiator Filler Neck for a 2013+ FR-S / BRZ / 86 pn FN2320; then this cap is a must because the factory cap does not fit it.
D**N
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.
O**S
The koyo cap fits good looks great and doesn't leak
I like the way the cap looks on the red I like the fact that it doesn't leak and I would recommend it for anyone who has a Koyo radiator
J**T
Five Stars
Just as advertised.
Trustpilot
2 weeks ago
5 days ago