Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The HKS Super Power Flow intake filter (SPF H 21S K6A C 21S F6A C 51S K6A) is a direct-replacement element specified across H 21S, 21S and 51S chassis using K6A or F6A engine designations as listed. Supplied as an SPF unit, it replaces the factory intake element to maintain proper filtration and fit in the Super Power Flow housing. Confirm the exact SPF code when ordering to match your application.
HKS SPF H 21S K6A C 21S F6A C 51S K6A
