Chase Bays - Radiator Cap Type A, 1.37bar / 20psi (CB-RADCAP-A)

Chase Bays 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.

If your cap has too low a spring pressure, your cap will push the fluid out prematurely and fill up the overflow. When we’re all driving our cars spiritedly this rapid rise in pressure is common and your stock cap is not built for this. A higher radiator cap pressure effectively raises the boiling temperature of the coolant, providing extra safety margin and preventing air pocket cavitation at the water pump.

Each replacement radiator cap is manufactured from stamped stainless steel for durability and feature silicone sealing elements that are superior to natural rubber gaskets. 

Chase Bays 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. NOTE: there are MANY vehicles not listed below that use one of these radiator cap styles. You can always cross reference factory replacements from Stant to confirm.

Type-A
1990-1993 Acura Integra
1991-2005 Acura NSX

92-99 BMW E36 with aftermarket expansion tank
99-06 BMW E46 with aftermarket expansion tank

1990-1993 Honda Accord
1988-1991 & 2016-up Honda Civic
1988-1991 Honda CRX 
1992-2001 Honda Prelude

2003-2008 Infiniti G35
2008-up Infiniti G37
2014-up Infiniti Q50
2014-up Infiniti Q60

1992-2000 Lexus SC400

1990-2005 Mazda Miata
2006-up Mazda MX-5
1986-1995 Mazda RX-7
2004-2011 Mazda RX-8

1991-1999 Mitsubishi 3000GT
1990-1999 Mitsubishi Eclipse
2002-up Mitsubishi Lancer/EVO

1989-1998 Nissan 180SX
1989-1998 Nissan 200SX
1989-1998 Nissan 240SX
1990-1996 Nissan 300ZX
2003-2009 Nissan 350Z
2009-up Nissan 370Z
2005-up Nissan Frontier
2009-up Nissan GT-R
1989-2002 Nissan Silvia
1989-2002 Nissan Skyline

2005-2006 Saab 9-2X

1993-up Subaru Impreza
1990-up Subaru Legacy
2015-up Subaru WRX STi
2015-up Subaru WRX

1982-1995 Toyota Celica
1985-1995 Toyota MR2
1986-1998 Toyota Supra