SKU: MMRC-13L | UPC: 748354797848
Mishimoto 1.3 Bar Rated Radiator Cap Large Domestic Universal Fit
The Mishimoto 1.3 Bar Rated Radiator Cap Large Domestic (MMRC-13L) raises cooling system pressure to 19 PSI for domestic vehicles with large radiator necks from 1.315 to 1.377 inches. It locks coolant inside during intense driving to avoid overflow into the reservoir. This direct OEM replacement ensures steady flow and system efficiency.
Key Features
- 19 PSI (1.3 Bar) Rating: Handles high-pressure demands to raise boiling point and retain coolant under load
- Brass Housing: Corrosion-resistant build endures heat cycles and harsh conditions for long life
- EPDM Rubber Seal: Creates airtight barrier to prevent leaks and maintain peak pressure
- Stainless Steel Spring: Delivers consistent tension for reliable operation over thousands of miles
- Universal Large Neck Fit: Matches OEM radiators 1.315-1.377 inches on most domestic cars and trucks
Product Notes
- Measure radiator neck diameter (33.5-35mm) to confirm compatibility before install
- Replace every 30k miles or after track use for best results
- Lightweight at 3.2 ounces ships economically worldwide
Installation Notes
- Professional installation recommended.
- Direct replacement requires no modifications or special tools
- Twist off old cap when engine fully cool then snap new cap in place
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-2023 | Ford | F-150 | All |
| 1988-1998 | Chevrolet | C/K1500 | All |
| 1988-1998 | GMC | C/K1500 | All |
| 1994-2018 | Dodge | Ram 1500 | All |
| 1979-2004 | Ford | Mustang | All |
| 1967-2002 | Chevrolet | Camaro | All |
| 1980-1996 | Ford | F-250 | All |
| 1988-2002 | Chevrolet | Silverado 1500 | All |
Why Choose Mishimoto?
- Engineered and dyno-tested in the USA for real-world performance
- Lifetime warranty covers defects in materials and workmanship
- Precision-machined for exact OEM seal and pressure retention
Frequently Asked Questions
- Q: What size radiator necks does the MMRC-13L fit?
A: Designed for large domestic necks measuring 1.315 to 1.377 inches (33.5-35mm) found on most Ford Chevy and Dodge applications - Q: What materials are used in construction?
A: Brass housing with stainless steel spring EPDM rubber gasket and retainer for maximum durability and sealing - Q: What is the warranty and install process?
A: Lifetime warranty from Mishimoto. Installs as direct OEM swap in minutes with engine cool no cutting or drilling needed
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Compact box 3.27 x 2.99 x 2.13 inches
- Weight: 3.2 ounces
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