Hybrid Racing Performance Radiator Cap


Increased pressure in your cooling system can increase the boiling temperature. By upgrading to a stronger cap you can effectively raise the boiling temperature of your system, reducing the risk of having your coolant turn into steam which then will cause cavitation. Cavitation, or air pockets will prevent the coolant from actually cooling the engine which can result in extreme wear and damage to vital engine parts. While using mostly water has its benefits, we recommend using a 50/50 mixture of coolant and water.

Hybrid Racing radiator cap is a high-pressure type that increases internal radiator pressure, thus physically raising the coolant boiling point and increasing cooling efficiency. The open valve pressure is 1.3kg/cm2 compared to the normal 1.1kg/cm2.


  • High 1.3bar (18.8psi) pressure rating
  • Matte black finish
  • OEM & Aftermarket types available
  • HR lifetime warranty

Type F Cap Vehicle Applications

  • For aftermarket style radiators
  • 88-91 Civic/CRX
  • 90-93 Integra
  • 92-01 Prelude

Type D Cap Vehicle Applications

  • For most OEM radiators only
  • 92-95 Civic (all)
  • 92-97 Delsol (all)
  • 96-00 Civic (all)
  • 02-05 Civic Si
  • 06-11 Civic (all)
  • 94-01 Integra (all)
  • 02-06 RSX (all)
  • 04-08 TSX
  • 00-09 S2000 (all)