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.

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: Radium Engineering coolant expansion tanks require a Type-A style radiator cap.

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

Vehicle Fitment:

• 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
• 2012-up Toyota 86
• 2008-up Toyota Land Cruiser
• 2008-up Toyota Sequoia
• 1993-2002 Toyota Supra
• 2007-up Toyota Tundra