GSC ::::: GSC 1040 Viton Valve Stem Seals for Honda B/H/K-Series

GSC Power-Division Viton Valve Stem Seals for the Honda B, H, and K-Series Engines 5.5mm valve size seal set (includes 8 intake and 8 Exhaust). These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines.