Description
Overview:
The Valve Stem Seal is a small but critical Genuine Honda part used to control oil flow at the valve guides on Honda petrol engines. Made from oil‐resistant elastomer with a rigid metal reinforcement, it provides a precise, durable seal around the valve stem to keep engine oil out of the combustion chamber. This helps reduce oil consumption and exhaust smoke, and supports clean, efficient running. Designed specifically for Honda's GX and GXV ranges, it offers an exact OEM fit for reliable operation. Ideal for routine head work or a top‐end refresh on engines such as the GX240 and GX270, this seal replaces Honda MPN 12209-ZE8-003 and restores factory performance when the original seal has hardened or worn.
Key Features:
- Genuine Honda part for assured fit, materials, and longevity
- Engineered to prevent oil leakage past the valve stem and guide
- Helps reduce exhaust smoke, plug fouling, and oil consumption
- Maintains combustion efficiency and consistent engine performance
- Durable construction resists heat, fuel, and oil for long service life
- Direct replacement for Honda MPN 12209-ZE8-003 (12209ZE8003)
- Suits common maintenance during valve and cylinder head servicing
- Stable sealing under vibration and temperature cycling in heavy use
- Compatible with a wide range of GX and GXV single‐cylinder and V‐twin engines
- Straightforward to fit when the rocker cover and valvetrain are accessible
Typical Applications:
Used during engine repairs and overhauls on equipment powered by Honda GX and GXV engines, including generators, pressure washers, water pumps, plate compactors, tillers, chippers, and commercial mowers. Ideal when addressing blue smoke on start‐up or deceleration, excessive oil use, or as a preventative part during valve guide or head gasket work to keep engines running cleanly and reliably.
Also known as:
Valve stem oil seal, valve guide seal, valve oil seal, stem oil seal, top valve seal. Common terminology varies by workshop, but all refer to the small seal fitted to the valve guide to regulate oil control on the valve stem.
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
Product Specifications
| L&S Part No. | 12209 ZE8 003 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 12209ZE8003 |
| Unit of Sale | 1 |
| Applications | 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 |
| Machine Type | Engines |
| Fits Brands | Honda |
| Fits Models | GX340K1 (GC05) | GX340U1 (GCAMK) | GX340UT1 (GCAVT) | GX340T1 (GCAWT) | GX340T2 (GCBFT) | GX340K1 (GDAE) | GX270 (GCAB) | GX270 (GDAD) | GX240K1 (GC04) | GX270T (GCADT) | GX270UT (GCAJT) | GX270U (GCALK) | GX270UT2 (GCBGT) | GX240U1 (GCAKK) | GX270T2 (GCBHT) | GX240UT1 (GCATT) | GX390T1 (GCAET) | GX390UT1 (GCAKT) | GX390U1 (GCANK) | GX390UT2 (GCBCT) | GX240UT2 (GCBJT) | GX390T2 (GCBDT) | GX240K1 (GDAC) | GX610 (GCAC) | GX610U1 (GCAPK) | GX620 (GCAD) | GX620 (GDAH) | GX620U1 (GCARK) | GX670 (GCAM) | GX690 (GDACK) | GXV610 (GJAC) | GXV620 (GJAD) | GXV670 (GJAH) | GXV670U (GJAHK) | GXV340T2 (GJABT) | GXV340RT2 (GJACT) | GXV390 (GJAA) | GXV390K1 (GEAD) | GXV390RT1 (GJADT) | EC5000 |
