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. NOTE: Traditionally, "radiator" caps are mounted to the radiator but can also be found on coolant expansion tanks (below).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. PRESSUREAvailable with 3 different pressure relief springs: 1. 1.1Bar (16.0psi)2. 1.3Bar (18.9psi)3. 1.5Bar (21.8psi) TYPESRadium radiator caps are designed for mini size (32mm ID) radiator necks only. Available in 2 common styles (Type-A and Type-B). Please confirm what style your application uses prior to ordering. NOTE: As shown below, Radium Engineering coolant expansion tanks require a Type-A style radiator cap. COMPATIBILITYBelow are popular vehicles with their respective radiator cap style used from the factory. NOTE: there are many vehicles not listed below. Type-A 1990-1993 Acura Integra1991-2005 Acura NSX1990-1993 Honda Accord1988-1991 & 2016-up Honda Civic1988-1991 Honda CRX 1992-2001 Honda Prelude2003-2008 Infiniti G352008-up Infiniti G372014-up Infiniti Q502014-up Infiniti Q601992-2000 Lexus SC4001990-1995 Mazda Cosmo1990-2005 Mazda Miata2006-up Mazda MX-51986-2002 Mazda RX-72004-2011 Mazda RX-81991-1999 Mitsubishi 3000GT1990-1999 Mitsubishi Eclipse2002-up Mitsubishi Lancer/EVO1989-1998 Nissan 180SX1989-1998 Nissan 200SX1989-1998 Nissan 240SX1990-1996 Nissan 300ZX2003-2009 Nissan 350Z2009-up Nissan 370Z1988-1994 Nissan Cefiro2005-up Nissan Frontier2009-up Nissan GT-R1989-2002 Nissan Laurel1989-2002 Nissan Silvia1989-2002 Nissan Skyline2005-2006 Saab 9-2X1997-up Subaru Forester1993-up Subaru Impreza1990-up Subaru Legacy2015-up Subaru WRX STi2015-up Subaru WRX1982-1995 Toyota Celica1985-1995 Toyota MR21986-1992 Toyota Supra Radium Coolant Expansion Tank Type-B 1994-2001 Acura Integra2002-2006 Acura RSX2004-2008 Acura TSX1994-1997 Honda Accord1992-2015 Honda Civic1993-1997 Honda Del Sol 2003-2011 Honda Element2007-up Honda Fit 2000-2009 Honda S20002008-up Lexus LX5701998-2005 Lexus IS3002012-up Scion FR-S2012-up Subaru BRZ2012-up Toyota 862008-up Toyota Land Cruiser2008-up Toyota Sequoia1993-2002 Toyota Supra2007-up Toyota Tundra SPECIFICATIONSMaterial: Stainless SteelSealing Gaskets: SiliconePressure: 1.1, 1.3, 1.5 BarDesign Structure: Type-A, Type-BConstruction: Metal StampingSurface Finish: Black Electroplate
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