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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.
PRESSURE
Available with 3 different pressure relief springs:
1. 1.1Bar (16.0psi)
2. 1.3Bar (18.9psi)
3. 1.5Bar (21.8psi)
TYPES
Radium 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.
COMPATIBILITY
Below are popular vehicles with their respective radiator cap style used from the factory. NOTE: there are many vehicles not listed below.
Type-B
1994-2001 Acura Integra
2002-2006 Acura RSX
2004-2008 Acura TSX
1994-1997 Honda Accord
1992-2015 Honda Civic
1993-1997 Honda Del Sol
2003-2011 Honda Element
2007-up Honda Fit
2000-2009 Honda S2000
2008-up Lexus LX570
1998-2005 Lexus IS300
2012-up Scion FR-S
2012-up Subaru BRZ
1996-2002 Toyota 4Runner
2012-up Toyota 86
2008-up Toyota Land Cruiser
2008-up Toyota Sequoia
1993-2002 Toyota Supra
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