Supertech Bronze Valve Guides Honda B16/B17/B18C1 and B18C5
16 Valves Intake and Exhaust side.
Supertech Valve Guides are stronger than stock and help pull heat off of the valve, increasing its longevity.
Model: 8x  GDE-HB55-I / 8x GDE-HB55-E
Manufactured by: Supertech Performance

Engine code? B16,B17,B18C1 ,B16B , B18C5 ?