The radiator cap is an essential part of an upgraded cooling system. Radium caps are engineered to safely improve cooling efficiency by managing the boiling temperature. A higher radiator pressure effectively raises the coolant boiling point, providing an extra safety margin and preventing air pocket cavitation at the water pump. Each OEM replacement radiator cap is manufactured from stamped stainless steel for durability. All 18-0076-X1X radiator caps are electroplated black. Unlike OEM caps which use natural rubber gaskets, these radiator caps feature premium silicone sealing elements for long lasting durability. PRESSURE Available with 3 different pressure relief springs: 1.1Bar (16.0psi)1.3Bar (18.9psi)1.5Bar (21.8psi) CAP TYPES Radium radiator caps are designed for mini size (32mm ID) radiator necks only. Available in Type-A. We no longer offer Type-B. Please confirm what style your application uses prior to ordering. NOTE: All Radium Engineering coolant expansion tanks require a Type-A style radiator cap. COMPATIBILITY All Radium Coolant Expansion Tanks Tanks & Radiators that accept 32mm mini Type-A radiator caps (see more below) TYPE-A APPLICATIONS 1990-1993 Acura Integra 1991-2005 Acura NSX 1990-1993 Honda Accord 1988-1991 Honda Civic 2016-up Honda Civic 1988-1991 Honda CRX 1992-2001 Honda Prelude Honda Ruckus 49cc Scooter 2003-2008 Infiniti G35 2008-2013 Infiniti G37 2014-up Infiniti Q50 2014-up Infiniti Q60 1992-2000 Lexus SC400 1990-1995 Mazda Cosmo 1989-2005 Mazda Miata 2006-up Mazda MX-5 1986-2002 Mazda RX-7 2004-2011 Mazda RX-8 1991-1999 Mitsubishi 3000GT 1990-1999 Mitsubishi Eclipse 1996-up Mitsubishi Lancer/EVO 1989-1998 Nissan 180SX 1989-1998 Nissan 200SX 1989-1998 Nissan 240SX 1990-1996 Nissan 300ZX 2003-2009 Nissan 350Z 2009-up Nissan 370Z 1988-1994 Nissan Cefiro 2005-up Nissan Frontier 2009-up Nissan GT-R 1989-2002 Nissan Laurel 1989-2002 Nissan Silvia 1989-up Nissan Skyline 2005-2006 Saab 9-2X 1997-up Subaru Forester 1993-up Subaru Impreza 1990-up Subaru Legacy 1991-1997 Subaru SVX 2015-up Subaru WRX STi 2015-up Subaru WRX 1982-1995 Toyota Celica 1985-1995 Toyota MR2 1986-1992 Toyota Supra SPECS & FEATURES Material: Stainless Steel Sealing Gaskets: Silicone Pressure: 1.1, 1.3, 1.5 Bar Design Structure: Type-A Construction: Metal Stamping Surface Finish: Black Electroplate
