---
product_id: 16912760
title: "Koyo SKC-13 Radiator Cap"
brand: "koyo"
price: "€ 64.80"
currency: EUR
in_stock: true
reviews_count: 10
category: "Koyo"
url: https://www.desertcart.be/products/16912760-koyo-skc-13-radiator-cap
store_origin: BE
region: Belgium
---

# 16lb pressure rating for peak cooling Universal fit for all Koyo radiators Durable aluminum & brass build Koyo SKC-13 Radiator Cap

**Brand:** koyo
**Price:** € 64.80
**Availability:** ✅ In Stock

## Summary

> 🔥 Lock in peak performance with Koyo’s Hyper Red Radiator Cap!

## Quick Answers

- **What is this?** Koyo SKC-13 Radiator Cap by koyo
- **How much does it cost?** € 64.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/16912760-koyo-skc-13-radiator-cap)

## Best For

- koyo enthusiasts

## Why This Product

- Trusted koyo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Premium Material Mix:** Crafted from OE-grade aluminum and brass for unmatched durability under extreme heat cycles.
- • **Universal Compatibility:** Seamlessly fits all Koyo radiators, ensuring hassle-free upgrades and replacements.
- • **Vibrant Hyper Red Finish:** Striking red paint adds a bold, performance-inspired aesthetic under your hood.
- • **Precision Pressure Control:** Maintains optimal 16lb pressure to prevent overheating and boost engine efficiency.
- • **Trusted Quality & Reliability:** Backed by Koyo’s rigorous testing and a 4.7-star rating from 270+ satisfied users.

## Overview

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.

## 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.

Review: 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
Review: $$$ but good. - Fits my koyorad radiator perfectly. It's expensive but it's quality.

## Features

- Hyper Red Radiator CapFor All Koyo Radiators1.3kgf/cm Pressure RatingHyper Red Radiator CapFor All Koyo Radiators1.3kgf/cm Pressure RatingCan you handle the pressure The Koyorad hyper Radiator Cap isfor intelligent tuners who demand to extract every ounce of coolingefficiency from their performance machines. Koyorad highlyrecommends our 1.3 bar Koyorad Hyper Cap (Koyo part numberSK-C13) for use with Koyorad All AluminumRacing Radiators (when applicable). The Koyorad Hyper Cap is madein Japan wit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** Koyorad
- **Color:** Red
- **Exterior Finish:** Painted
- **Item dimensions L x W x H:** 5 x 3 x 2 inches
- **Material:** Aluminum, Brass

## Images

![Koyo SKC-13 Radiator Cap - Image 1](https://m.media-amazon.com/images/I/71+3QYhxUML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixes stock Hot-Run issue with WRX
*by A***D on December 9, 2024*

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

### ⭐⭐⭐⭐⭐ $$$ but good.
*by D***S on March 4, 2026*

Fits my koyorad radiator perfectly. It's expensive but it's quality.

### ⭐⭐⭐⭐⭐ Research Your Car First
*by D***N on August 19, 2026*

Make sure your car can handle this. If you still have stock rubber hoses, they WILL split somewhere and cause a rapid coolant flush.

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**Shop now:** [https://www.desertcart.be/products/16912760-koyo-skc-13-radiator-cap](https://www.desertcart.be/products/16912760-koyo-skc-13-radiator-cap)

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-09-17*