High-Pressure Radiator Cap - Type B (Black)Applications: Type A fits the following Most aftermarket radiators including K Tuned Passenger Radiator 88 91 Civic CRX 90 93 Integra Type B fits the following K Tuned Upper Coolant Housing Filler Necks 94 01 Integra 02 06 RSX 04 08 TSX 90 97 Accord 92 18 Civic 93 97 del Sol 03 08 Honda Element 07 08 Honda Fit Note: * Type B does NOT fit our K Tuned Passenger Side Rad K Tuned High Pressure Rad Caps were designed specifically to end the confusion over