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Mishimoto MMRC-13-ONWY 1.3 Bar High-Pressure Radiator Cap Small One-Way Subaru

(2002-2014, 2017-2024 Subaru Impreza; 2005-2009 Subaru Outback; 2004-2014 Subaru Forester; 2017-2018 Subaru WRX; 2005-2012 Subaru Legacy + 3 more models)

Part of: Mishimoto 1.3 Bar Radiator Cap

Other options in this family: Mishimoto MMRC-13L

Manufacturer

Picture for manufacturer Mishimoto

Part Number

MMRC-13-ONWY
9 reviews
Sale Price

$27.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Mishimoto MMRC-13-ONWY is a high-pressure radiator cap designed to raise your cooling system's boiling point and improve overall engine performance. This small-sized cap features a 1.3 bar (18.9 PSI) pressure rating, which increases the boiling point of your coolant and helps prevent overheating under demanding driving conditions.

Key Features:

  • 1.3 bar (18.9 PSI) high-pressure rating for increased coolant boiling point
  • One-way pressure relief valve design prevents coolant backflow
  • Small cap size designed specifically for Subaru applications
  • Precision-engineered spring mechanism maintains consistent pressure
  • Durable construction withstands high temperatures and pressures
  • Direct replacement for factory radiator cap

By increasing your cooling system's pressure, this radiator cap raises the boiling point of your coolant, reducing the risk of coolant boil-over during high-performance driving, track use, or towing. The one-way valve design ensures proper pressure relief while preventing reverse flow that could introduce air into the system. Engineered for a precise fit on Subaru radiators with small-diameter cap necks.

Products specifications

Fits

2002-2014, 2017-2024 Subaru Impreza; 2005-2009 Subaru Outback; 2004-2014 Subaru Forester; 2017-2018 Subaru WRX; 2005-2012 Subaru Legacy; 2018-2024 Subaru Crosstrek; 2015-2021 Subaru WRX STI; 2004-2006 Subaru Baja

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

TechSpec Length (Inches)

2

TechSpec Overall Height (Inches)

1

TechSpec Installation Notes

Allow engine to cool for 30 minutes -- Remove existing cap -- Install MM radiator cap

TechSpec Applications

Subaru Baja 2.5L H4 2004-2006--Subaru Crosstrek 2.0L H4 2018+--Subaru Crosstrek 2.5L H4 2021+--Subaru Forester 2.0L H4 2014--Subaru Forester 2.5L H4 2004-2013--Subaru Impreza 2.0L H4 2013-2014--Subaru Impreza 2.0L H4 2017+--Subaru Impreza 2.5L H4 2004-201

TechSpec Engine Codes

EJ20--EJ25

TechSpec Weight (Ounces)

1

TechSpec Diameter (Inches)

2.175

TechSpec Maximum Pressure (PSI)

18.9

TechSpec Includes

1.3 Bar Radiator Cap -- Mishimoto Lifetime Warranty

Install Difficulty

1

Seemless

Very easy so far.

Excellent delivery time and great service

Everything went great. thanks, Randy

Easy to navigate so far.

Great exhaust, fast delivery

always happy with service

Just contacted for delivery date

No comment.

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