P2M Radiator Gauge Cap – 1.3 Bar (18.85 PSI) | Integrated Temperature Gauge | Style 148 | Universal JDM Fitment

Upgrade your cooling system pressure cap with the P2M 1.3 Bar Radiator Gauge Cap — a high-pressure radiator cap with an integrated temperature gauge for at-a-glance coolant temperature monitoring. Running a higher-pressure cap raises the boiling point of your coolant, reduces air pocket buildup in the cooling system, and provides a more robust seal than the factory rubber cap — a simple, effective cooling system upgrade for any performance or daily-driven JDM vehicle.

Key Features

• 1.3 Bar (18.85 PSI) High-Pressure Rating: Higher system pressure raises the boiling point of your coolant, providing additional thermal headroom before coolant boils and cavitates — particularly beneficial for track use, spirited street driving, and any application where sustained high coolant temperatures are a concern
• Integrated Temperature Gauge: Built-in temperature gauge allows you to monitor coolant temperature directly at the radiator cap — a useful at-a-glance reference for coolant system health without requiring additional gauges or sensors
• Reduces Air Pocket Buildup: Higher system pressure helps suppress air pocket formation in the cooling system — air pockets reduce cooling efficiency and can cause localised hot spots in the engine. Maintaining consistent system pressure helps keep coolant flow uniform throughout the cooling circuit
• High-Performance Cap Seal: Features a high-performance cap seal for improved durability and sealing integrity over the conventional rubber seal used in factory caps — maintaining consistent system pressure over long-term use
• Wide JDM & Performance Vehicle Fitment – Style 148: Style 148 cap fits a wide range of JDM and performance vehicles — see the full compatibility list below. Verify your specific vehicle's radiator cap size and pressure rating before ordering

Specifications

• Pressure Rating: 1.3 Bar / 18.85 PSI
• Style: 148
• Integrated Temperature Gauge: Yes
• Part Number: P2-RGCT14813-HTT

Vehicle Compatibility

This Style 148 gauge cap is compatible with, but not limited to, the following vehicles. Always verify your specific radiator cap size and fitment before ordering.

Acura
1990–1993 Acura Integra
1991–2005 Acura NSX

Honda
1990–1993 Honda Accord
1988–1991 & 2016+ Honda Civic
1988–1991 Honda CRX
1992–2001 Honda Prelude

Infiniti
2003–2008 Infiniti G35
2008+ Infiniti G37
2014+ Infiniti Q50
2014+ Infiniti Q60

Lexus
1992–2000 Lexus SC400

Mazda
1990–1995 Mazda Cosmo
1990–2005 Mazda Miata
2006+ Mazda MX-5
1986–2002 Mazda RX-7
2004–2011 Mazda RX-8

Mitsubishi
1991–1999 Mitsubishi 3000GT
1990–1999 Mitsubishi Eclipse
2002+ Mitsubishi Lancer / Lancer Evolution

Nissan
1989–1998 Nissan 240SX
1990–1996 Nissan 300ZX
2003–2009 Nissan 350Z
2009+ Nissan 370Z
2005+ Nissan Frontier
2009+ Nissan GT-R
1989–2002 Nissan Skyline

Saab
2005–2006 Saab 9-2X

Subaru
1993+ Subaru Impreza
1990+ Subaru Legacy
2015+ Subaru WRX
2015+ Subaru WRX STI

Toyota
1982–1995 Toyota Celica
1985–1995 Toyota MR2
1986–1992 Toyota Supra

Note: Verify your specific vehicle's radiator cap size (Style 148) and pressure rating compatibility before ordering. Not all vehicles use the same cap style — confirm fitment against your factory cap or owner's manual. Coolant system should be cold before removing or installing the radiator cap.