By increasing the coolant pressure and raising its boiling point, the faster your motor is relieved of excessive engine heat.
KOYO RACING RADIATOR HYPER CAP SK-C13 1.3BAR ( 18.85PSI ) FIT ALL KOYO RADIATORS
Koyo Hyper Cap Fits All Koyorad Aluminum Radiators That Have Filler Necks
Koyo HH060642 Radiator
Koyo Radiator Cap (1.3 Bar, Hyper Red), For Koyo Aluminum Radiators I SK-C13
Koyo SK-C13 1.3 bar Hyper Cap for Koyorad Aluminum Radiator w/ Filler Neck
Koyo SK-C13 Hyper Series Red Radiator Cap
