Mishimoto High-Pressure 1.3 Bar Radiator Cap - Small - One-Way

Fitment Summary

Part #: MMRC-13-ONWY

Overview

The Mishimoto High-Pressure 1.3 Bar Radiator Cap is a specialized cooling system component designed to enhance the performance and reliability of your Subaru vehicle. Engineered to withstand higher pressure levels, this radiator cap helps maintain optimal coolant pressure during demanding driving conditions, ensuring your engine remains properly cooled and protected. It is ideal for enthusiasts and drivers who push their vehicles hard, whether on the track or during spirited driving sessions, seeking to improve cooling efficiency and prevent coolant loss. This radiator cap is crafted with precision to match OEM specifications, featuring a one-way valve that prevents coolant from escaping into the overflow reservoir prematurely. Its small size makes it a direct replacement for the stock cap, providing a seamless upgrade that supports your vehicle’s cooling system integrity and performance.

Key Features

This high-pressure radiator cap offers several practical benefits:

• Constructed from durable, corrosion-resistant materials for long-lasting performance
• Designed to operate at 1.3 bar (approximately 19 psi), increasing pressure capacity beyond stock caps
• Features a one-way valve that maintains proper coolant pressure and prevents coolant loss
• Engineered specifically for Subaru vehicles, ensuring compatibility and reliable operation
• Easy to install with a direct fit replacement, requiring no additional modifications

Construction & Design

The Mishimoto radiator cap is built with high-quality, corrosion-resistant metals and seals to withstand high-pressure conditions. Its compact design ensures a perfect fit within the OEM radiator opening, maintaining the integrity of your vehicle’s cooling system while supporting increased pressure levels.

Performance & Response

By increasing the pressure capacity of your cooling system, this cap helps prevent coolant boiling and vapor lock during high-stress driving. Maintaining optimal coolant pressure ensures consistent engine temperatures, which can contribute to improved engine response and reliability under demanding conditions.

Installation & Fitment

This radiator cap is designed as a straightforward replacement for the stock component. Simply remove the existing cap and install the Mishimoto high-pressure cap in its place. No additional tools or modifications are required, making it a quick upgrade for enhanced cooling performance.

What’s Included

The package includes one Mishimoto High-Pressure 1.3 Bar Radiator Cap, specifically designed for Subaru vehicles, with one-way functionality to support high-pressure cooling systems.

Ideal For

This product is perfect for Subaru owners who regularly engage in spirited driving, track days, or operate their vehicles under high-performance conditions. It is also suitable for those looking to improve the durability and efficiency of their cooling system for long-term reliability.