Skunk2 Viton Valve Stem Seals for Honda Engines with 5.5 mm Valve Stems

Skunk2 valve stem seals are all Viton, intake and exhaust, and keep oil out of the combustion chamber without leaving the stem dry. Their retaining springs are stiffer than stock.

Specifications

Which cars it fits

• Honda engines with 5.5 mm valve stems

What to check

• Viton resists high temperatures, oil additives and abrasion; Honda's own intake and exhaust seals are made from different materials.
• Skunk2 requires them when fitting the 312-05-0010 spring bases on K-series engines.