The HKS D1 Limited Edition Radiator Cap functions to increase the pressure inside the radiator allowing the coolant's boiling point to increase. Improves overall cooling performance and boiling can be avoided. This rare piece is a limited edition item and is only available while supplies last! Get yours today! A great item that truly works. Made by HKS Japan.
Fits
90-93 Acura Integra
91-05 Acura NSX
90-93 Honda Accord
88-91 Honda Civic
88-91 Honda CRX
92-96 Honda Prelude
03-07 Infiniti G35
08-09 Infiniti G37
02-09 Mitsubishi Lancer
03-09 Mitsubishi Lancer Evolution
06-09 Mazda MX-5
03-09 Mazda RX-8
89-98 Nissan 240SX
90-96 Nissan 300ZX
03-08 Nissan 350Z
09 Nissan 370Z
09 Nissan GTR
02-09 Subaru Impreza
02-09 Subaru Impreza WRX, WRX STi
+ Other cars with equivalent fitment.