Skunk2’s Viton Valve Stem Seals are designed for popular Honda and Acura engines that use a 5.5 mm valve stem. These seals are made of high-quality Viton rubber, providing superior heat resistance, durability, and oil control across the RPM range. Unlike many OEM seals that use different materials for intake and exhaust, Skunk2’s set uses consistent, high-spec Viton material for all seals, and each comes with stiffer retaining springs for precise sealing.

These seals help prevent oil from entering the combustion chamber while ensuring proper lubrication to the valve stem. This helps protect performance and longevity, especially in high-RPM or tuned engines.

Key Features:

• Made of premium Viton material for excellent heat and chemical resistance

• Universal set for all 16 valves (32 pieces total)

• Designed for 5.5 mm valve stems

• Stiffer retaining springs for better sealing

• Compatible across many Honda engine families (B, D, F, H, K)

Vehicle / Engine Fitment:
Fits a wide range of Honda/Acura engines that use 5.5 mm valve stems, including:

• B‑Series VTEC (B16, B18, etc.)

• D‑Series

• F‑Series (e.g. F20C / F22C)

• H‑Series (H22 / H23)

• K‑Series

Included:

• 32 Viton valve stem seals (sufficient for 16 valves)

• Retaining springs (stiffer design)