Ferrea Honda D16Z6/Y5/Y7/Y8 31mm 5.48mm 20 Deg S-Flo Rad Grv +1mm 6000 Series Int Valve - Set of 8

If you're rebuilding the top end of your Honda D16Z6, D16Y5, D16Y7, or D16Y8 engine, these Ferrea 6000 Series intake valves are a solid choice. They're designed with a 31mm head diameter and a 5.48mm stem, and these particular valves are +1mm oversized. This means they have a slightly larger head diameter than stock, which can help improve airflow into the combustion chamber when paired with appropriate porting.

Ferrea uses high-quality steel for their 6000 Series valves, known for their strength and durability under engine operating temperatures. The S-Flo (Straight Flo) design and 20-degree valve seat angle are intended to promote better airflow efficiency. These valves are built to handle the demands of performance-oriented builds, offering a noticeable improvement over worn or stock components.

This set includes eight intake valves, enough for a complete cylinder head. When installing, remember that oversized valves require matching the valve seats in the cylinder head to the new valve size. Always refer to the manufacturer's installation instructions for specific details and recommended procedures.