Heating and Cooling› Thermostats, Housings and Fillers

Mishimoto

1.3 Bar High-Pressure Radiator Cap

$35.00

SKU: MMRC-13-LG

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Mishimoto MMRC-13-LG is a high-pressure radiator cap designed to enhance engine cooling. It is rated at 1.3 Bar (19 psi), which raises the boiling point of engine coolant, providing a safer and more efficient cooling system. The cap is constructed from performance aluminum and features an ergonomic design for easy removal and installation.
Show original supplier description
When a vehicle's cooling system becomes highly pressurized, stock caps can fail, leading to coolant loss into the overflow reservoir. This Mishimoto cap, rated at 1.3 Bar (19 lbs) of pressure, effectively keeps coolant within the system. Its ergonomic design ensures easy removal and installation, making it a straightforward upgrade for your vehicle's cooling system. The higher pressure rating of 1.3 Bar raises the boiling point of engine coolant, contributing to a safer and more efficient operating temperature. This particular model, the MMRC-13-LG, is designed for radiators that require a large radiator cap and fits most domestic vehicles. It is backed by the Mishimoto Lifetime Warranty, reflecting the brand's commitment to quality and customer satisfaction. Installation difficulty is rated as Easy.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMishimoto
Part NumberMMRC-13-LG
CategoryHeating and Cooling
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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