Supertech Performance FEVI-3501D-HS-12 Sodium Filled Inconel Exhaust Valves Ford EcoBoost 3.5L

These sodium filled valves made of Inconel/Nimonic alloy offer a significant reduction in valve head temperatures that are required for today's modern turbo engines, with a cooler valve improving the material strength and durability while allowing the tuner more flexibility and a wider range of spark timing advances.

Key Specifications:

• Head Diameter: 31mm (standard size)
• Stem Diameter: 5.46mm
• Length: 95.30mm
• Material: Inconel-Nimonic with sodium fill
• Groove Type: Single groove
• Valve Type: Exhaust
• Quantity: 12 valves per set

These valves deliver an average weight reduction of 10% compared to standard valves, which helps reduce valvetrain mass and allows for higher RPM capability. Inconel nickel base alloy is specifically used for exhaust valves that reach very high temperatures, such as those in turbo or supercharged applications, making this set ideal for high-performance and forced induction builds.

Note: Requires Supertech single groove valve keepers (KPR-5.5/7A-ST), sold separately—two keepers needed per valve.