Ferrea Subaru FA20 36mm 5.46mm 105mm 10 Deg S-Flo Flat Head +1mm 6000 Series Intake Valve - Set of 8

These Ferrea 6000 Series intake valves are built with a specific 10-degree S-Flo design and a flat head, measuring 36mm in diameter. They are designed to be a +1mm oversized replacement for your Subaru FA20 engine, with a 5.46mm stem and a 105mm overall length. This set includes eight valves, providing a complete solution for one bank of cylinders.

The 6000 Series material is chosen for its strength and durability under the demanding conditions found in performance engine builds. The S-Flo design helps improve airflow into the combustion chamber, which can contribute to better engine performance. Being a +1mm oversized valve means they are slightly larger than stock, which is a common modification for engines that have been rebuilt or are intended for higher performance applications, allowing for potentially better cylinder filling.

When rebuilding or modifying your Subaru FA20 engine, using well-made valves like these from Ferrea ensures that critical internal components can handle the increased stress and airflow. Always refer to your engine's service manual for proper installation procedures and specifications.