High-Pressure 1.3 Bar Radiator Cap Large

Features:

• Universal fit for most domestic vehicles
• Maintains system pressure at 1.3 Bar
• Reduces coolant loss under high pressure
• Keeps coolant circulating properly
• Helps prevent overheating during hard driving
• Ideal for performance and heavy-duty use
• Upgrades weak factory radiator caps
• Rated at 19 pounds of pressure

Keep Cool Under Pressure

When you're pushing your vehicle harder than stock conditions—whether it's on the track, hauling a load, or just during aggressive daily driving—every part of your cooling system needs to be up to the task. The Mishimoto MMRC-13L High-Pressure 1.3 Bar Radiator Cap is a simple but effective upgrade that helps your cooling system perform more reliably under stress. Rated at 1.3 bar, or 19 psi, this cap raises the pressure threshold of your radiator, allowing your system to operate at higher temperatures without boiling over or forcing coolant into the overflow tank. That means less coolant loss and better temperature control when your engine needs it most.

A Small Change That Makes a Big Difference

Designed for a universal fit on most domestic vehicles, this cap is ideal for drivers running upgraded cooling systems or looking for better long-term reliability from their stock setup. It’s especially helpful for performance builds and trucks that see long workdays or heavy towing. The cap installs just like a factory piece, but its high-quality construction and increased pressure rating make it a serious upgrade in terms of function. If you're chasing consistent performance, this is one of those small components that plays a much bigger role than most people realize. It’s a smart, affordable step toward keeping your engine cool and your system sealed tight.

Fits: Universal