Radium Radiator Cap Type-B *Discontinued*



More info below

The Type-B Radium high performance radiator caps are available in 3 pressure ratings and are designed for 32mm ID radiator necks only. Please confirm what style your radiator uses prior to ordering.

As of June 2022, all type B caps have been discontinued by Radium. We have none remaining in stock.
See more Radiator Caps

Vehicle Fitment:
• Acura RSX
• Honda S2000
• Subaru BRZ / FRS / 86
• MKIV Supra
(See more fitments below)

(1) Cap

Full Description:
Radium high performance radiator caps are engineered to improve cooling efficiency. The radiator cap is an essential part of an upgraded cooling system and will help to safely maximize engine performance by controlling the coolant boiling point. Each OEM replacement radiator cap is manufactured from stamped stainless steel for durability and feature silicone sealing elements that are superior to natural rubber gaskets.
Available in 3 pressure ratings:

Part Number Bar PSI Cap Finish
18-0016-B11 1.1 16.0 Polished
18-0016-B13 1.3 18.9 Polished
18-0016-B15 1.5 21.8 Polished
A higher radiator coolant pressure effectively raises the boiling temperature of the coolant, providing extra safety margin and preventing air pocket cavitation at the water pump.

Radium radiator caps are designed for mini size (32mm ID) radiator necks only. Please confirm what style your radiator uses prior to ordering.

Below are popular vehicles with their respective radiator cap style that is used from the OEM factory. There are many vehicles not listed below that will also use one of these radiator cap styles.

Type-B Cap Vehicle Fitments:
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+ Honda Fit
2000-2009 Honda S2000
2008+ Lexus LX570
1998-2005 Lexus IS300
2012+ Scion FR-S
2012+ Subaru BRZ
2012+ Toyota 86
2008+ Toyota Land Cruiser
2008+ Toyota Sequoia
1993-2002 Toyota Supra
2007+ Toyota TundraSee more Radium Products
See more Radium Products
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