Honda GX240 Valve Stem Seal: 12209-ZE8-003

The Valve Stem Seal is a compact yet essential Genuine Honda component designed to regulate oil flow at the valve guides in Honda petrol engines. Manufactured from oil-resistant elastomer and reinforced with a rigid metal core, it delivers a precise, long-lasting seal around the valve stem, preventing engine oil from entering the combustion chamber. This control of oil flow helps minimise oil consumption and exhaust smoke while supporting clean, efficient engine operation.

Purpose-built for Honda GX and GXV engine families, the seal provides an exact OEM fit for dependable performance. It is commonly fitted during cylinder head servicing or top-end overhauls on engines such as the GX240 and GX270. Replacing Honda MPN 12209-ZE8-003, it restores factory-level oil control when the original seal has deteriorated due to age or heat.

Key Features:

Genuine Honda component ensuring correct fit, materials, and durability

Designed to prevent oil migration past the valve stem and guide

Reduces exhaust smoke, spark plug fouling, and oil usage

Supports efficient combustion and consistent engine performance

Direct replacement for Honda MPN 12209-ZE8-003 (12209ZE8003)

Suitable for routine maintenance during valve or cylinder head work

Maintains stable sealing under vibration and thermal cycling

Compatible with a broad range of GX and GXV single-cylinder and V-twin engines

Fits Models:

EC5000, GX240, GX240K1, GX240U1, GX240UT1, GX240UT2, GX270, GX270T, GX270T2, GX270U, GX270UT, GX270UT2, GX340, GX340K1, GX340T1, GX340T2, GX340U1, GX340UT1, GX390, GX390T1, GX390T2, GX390U1, GX390UT1, GX390UT2, GX610, GX610U1, GX620, GX620U1, GX670, GX690, GXV340RT2, GXV340T2, GXV390, GXV390K1, GXV390RT1, GXV610, GXV620, GXV670, GXV670U

Alternate Part Numbers:

12209-ZE8-003, 12209ZE8003

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