Radiator Caps 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-A1990-1993 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-B1994-2001 Acura Integra2002-2006 Acura RSX2004-2008 Acura TSX1998-2016 Chevrolet Tracker1989-1997 Geo Tracker1994-1997 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 BRZ1989-1999 Suzuki Swift1996-up Toyota 4Runner2012-up Toyota 862008-up Toyota Land Cruiser2008-up Toyota Sequoia1993-2002 Toyota Supra1995-up Toyota Tacoma 2007-up Toyota Tundra SPECIFICATIONS Material Stainless Steel Sealing Gaskets Silicone Pressure 1.1, 1.3, 1.5 Bar Design Structure Type-A, Type-B Construction Metal Stamping Surface Finish Black Electroplate Other Radium Engineering Products available for any chassis/engine - if you don't see what you’re looking for please message us directly. We shop our competition - if you find a lower comparable price we will match or beat it - message for details! PROPOSITION 65 WARNING: These products may contain chemicals known to the State of California to cause birth defects or other reproductive harm. For more information visit www.P65Warning.ca.gov About RADIUM Engineering, LLCSince 2010, Radium Engineering's goal has been to simply design and produce high quality aftermarket automotive performance products. Radium Engineering relies on a core team with a passion for innovation to lead the company toward advancement in the industry.All Radium products are carefully planned with thorough R&D and designed in-house using the latest computer simulation and modeling techniques. Extensive testing and evaluation ensures the performance of Radium products exceed consumer expectations. For these reasons, top motorsports competitors and enthusiasts worldwide rely on Radium Engineering products. Currently, Radium offers an expanding collection of motorsport parts and accessories for high performance and racing, focusing on their revolutionary fuel surge tank line and PCV oil catch can systems. A growing collection of application specific parts are also being created. Please contact Radium Engineering for more information.
