Supertech Polyacrylic Intake Valve Stem Seals – 5.5mm | Honda | Set of 8

Ensure precise oil control on the intake side of your Honda cylinder head with Supertech’s Polyacrylic Intake Valve Stem Seals. Manufactured from polyacrylic elastomer — a material well-suited for the lower-temperature, oil-rich environment of the intake valve stem — these seals provide reliable sealing performance for street and performance Honda engine builds. Sold as a set of 8, covering all intake valves on a 4-cylinder engine.

Key Features

• Polyacrylic Elastomer Material: Optimized for intake valve stem sealing — excellent oil resistance and durability in the cooler, oil-rich environment of the intake side
• 5.5mm Valve Stem Diameter: Correct sizing for Honda engines using 5.5mm intake valve stems
• Intake-Specific Design: Engineered for the thermal and chemical conditions of intake valve stem sealing
• Precise Oil Control: Maintains proper oil film on the valve stem while preventing excess oil from entering the intake port and combustion chamber
• Set of 8: Covers all intake valves on a 4-cylinder engine in a single purchase
• Supertech Quality: Manufactured by Supertech Performance — a trusted supplier to professional engine builders worldwide

Specifications

• Material: Polyacrylic Elastomer
• Valve Stem Diameter: 5.5mm
• Position: Intake
• Quantity: Set of 8
• Application: Honda engines with 5.5mm intake valve stems

Common Fitment

• Honda B-Series, D-Series, H-Series, F-Series engines with 5.5mm intake valve stems
• Verify valve stem diameter for your specific Honda engine before ordering

Note: Always verify valve stem diameter for your specific engine and head configuration before ordering. Intake and exhaust valve stem seals are not interchangeable — confirm you are ordering the correct intake-specific seal. For exhaust valve stem seals, see the Supertech Viton Exhaust Valve Stem Seal (SPTVS-H5.5E-8). Professional engine assembly recommended.