Radiator Caps
Radiator caps and recovery-style caps for cooling systems, with application-specific options to compare by cap style, fit and manufacturer reference.Radiator and recovery-style caps for cooling systems, to compare by style and fit.
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Radiator Cap (38mm Bottom Diameter) Universal 1990 - ONWARDS UNIV-CAP-R123 - Sterling Parts
SKU: UNIV-CAP-R123
Regular price $16.99Unit price -
Holden Commodore VZ VE VF V6 V8 Radiator Cap Bottle Cap Screw Down Type RCS-HLNXX1 - Machter
SKU: RCS-HLNXX1
Regular price $40.00Unit price -
SKU: ROB-FD004
Regular price $57.80Unit price -
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Large Radiator Cap 42mm 1.1barCOMPLETE Billet Cover 16 PSI AF64-5043S - Aeroflow
SKU: AF64-5043S
Regular price $67.21Unit price -
Large Radiator Cap 42mm 1.1barCOMPLETE Billet Cover 16 PSI AF64-5043BLK - Aeroflow
SKU: AF64-5043BLK
Regular price $67.21Unit price -
Large Radiator Cap 42mm 1.4barCOMPLETE Billet Cover 21 PSI AF64-5044P - Aeroflow
SKU: AF64-5044P
Regular price $67.21Unit price -
Radiator Cap 32mm Black 23 PSI1.58 Bar 158 Kpa Small S/S AF64-5034BLK - Aeroflow
SKU: AF64-5034BLK
Regular price $38.00Unit price -
Billet Radiator Cap 42mm .5barCOMPLETE Billet Cover 7 PSI AF64-5042 - Aeroflow
SKU: AF64-5042
Regular price $67.21Unit price -
Radiator Cap 32mm Silver 23PSI1.58 Bar 158 Kpa Small S/S AF64-5034S - Aeroflow
SKU: AF64-5034S
Regular price $38.00Unit price -
Billet Radiator Cap 32mm 1.44bCOMPLETE With Billet Cover AF64-5033S - Aeroflow
SKU: AF64-5033S
Regular price $57.58Unit price -
Billet Radiator Cap 32mm 1.1b Complete With Billet Cover AF64-5032G - Aeroflow
SKU: AF64-5032G
Regular price $57.58Unit price -
Billet Radiator Cap 32mm 1.1b Complete With Billet Cover AF64-5032S - Aeroflow
SKU: AF64-5032S
Regular price $57.58Unit price
Choosing a radiator cap
+ Read More − Read Less
Standard or recovery style
Some systems use a cap designed to work with a recovery reservoir. Check whether your system calls for a recovery-style cap before choosing.
Pressure specification
Cap pressure ratings are system specific. Match the rating stated on your existing cap or in the manufacturer information rather than assuming a higher figure is better.
Neck and seal fit
Compare the cap's lock style, shape and seal with the filler neck it must close. A mismatch can stop it seating properly.

