B SERIES REPLACEMENT INLET + EXHAUST VALVES OE SPECA direct replacement valve for the Honda B16A engines. These will also fit all B engines. The valves are standard size and compression * Please note on the B16B +B18C Type r engine the inlet valve has some material removed on the back of the valve head , this material is not removed on these replacement (and most other brands) valves. They work exactly the same and even offer a better life span of the valve *