






Radium Engineering Radiator Cap Type A Black
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Description
Radium Engineering Radiator Cap Type A Black
Application: Mini-size 32mm ID Type-A radiator necks, including all Radium coolant expansion tanks
Part Type: High-pressure radiator cap, Type-A, black
Part Number: 18-0076-A11, 18-0076-A13, 18-0076-A15
Radium radiator caps are engineered to safely improve cooling efficiency by managing the coolant boiling temperature. A higher pressure rating raises the boiling point, giving an extra safety margin and helping prevent air pocket cavitation at the water pump.
Each cap has a stamped stainless steel body and silicone sealing elements in place of the natural rubber gaskets used on OEM caps, finished in black electroplate. They suit mini-size 32mm ID Type-A radiator necks only and are required on all Radium coolant expansion tanks.
Key Features
- Stainless Steel: Stamped stainless steel construction
- Silicone Seals: Silicone sealing elements instead of OEM-style natural rubber gaskets
- Three Pressure Ratings: 1.1, 1.3 or 1.5 bar to suit your cooling system
- Raises Boiling Point: Extra safety margin and reduced water pump cavitation
- Black Electroplate: All 18-0076 caps are electroplated black
Available Configurations
- 18-0076-A11: 1.1 bar (16.0psi)
- 18-0076-A13: 1.3 bar (18.9psi)
- 18-0076-A15: 1.5 bar (21.8psi)
Important Notes
- Type-A only – Radium no longer offers Type-B caps. Check your cap style against the product images before ordering
- Suits mini-size 32mm ID radiator necks only
- All Radium coolant expansion tanks require a Type-A cap
Vehicle Fitment
- Acura/Honda Integra 1990–1993
- Acura/Honda NSX 1991–2005
- Honda Accord 1990–1993
- Honda Civic 1988–1991 and 2016–on
- Honda CRX 1988–1991
- Honda Prelude 1992–2001
- Honda Ruckus 49cc scooter
- Infiniti G35 2003–2008
- Infiniti G37 2008–2013
- Infiniti Q50 2014–on
- Infiniti Q60 2014–on
- Lexus SC400 1992–2000
- Mazda Cosmo 1990–1995
- Mazda MX-5 (Miata) 1989–2005
- Mazda MX-5 2006–on
- Mazda RX-7 1986–2002
- Mazda RX-8 2004–2011
- Mitsubishi 3000GT 1991–1999
- Mitsubishi Eclipse 1990–1999
- Mitsubishi Lancer/EVO 1996–on
- Nissan 180SX 1989–1998
- Nissan 200SX 1989–1998
- Nissan 240SX 1989–1998
- Nissan 300ZX 1990–1996
- Nissan 350Z 2003–2009
- Nissan 370Z 2009–on
- Nissan Cefiro 1988–1994
- Nissan Frontier 2005–on
- Nissan GT-R 2009–on
- Nissan Laurel 1989–2002
- Nissan Silvia 1989–2002
- Nissan Skyline 1989–on
- Saab 9-2X 2005–2006
- Subaru Forester 1997–on
- Subaru Impreza 1993–on
- Subaru Legacy 1990–on
- Subaru SVX 1991–1997
- Subaru WRX 2015–on
- Subaru WRX STI 2015–on
- Toyota Celica 1982–1995
- Toyota MR2 1985–1995
- Toyota Supra 1986–1992
- All Radium coolant expansion tanks
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.

