Description
Overview:
This Exhaust Valve (14721-ZE3-000) is a genuine Honda engine component for maintaining correct exhaust timing and reliable sealing under high heat. Built from heat-resistant steel with a mushroom head and straight stem, it withstands the thermal and mechanical load found in air-cooled petrol engines. It controls the release of spent gases from the combustion chamber to keep performance consistent and emissions stable. Designed for Honda GX340 and GX390 applications, it is an exact-fit replacement that works with the original seat, guide, spring, collets, and retainer when installed to the service manual. Suitable for engines used in generators, pressure washers, compactors, pumps, and other industrial or garden machinery, it restores factory function when the original valve is worn, burnt, or pitted. As a genuine Honda part, it supports long service life and dependable running.
Key Features:
- Genuine Honda part for precise fit and compatibility
- Heat-resistant steel construction for durability at sustained high temperatures
- OEM geometry for accurate seating and reliable gas sealing
- Smooth stem finish to minimise guide wear and friction
- Direct replacement with no modifications when used with standard Honda hardware
- Manufactured to Honda specifications for consistent performance and longevity
- Helps restore compression and exhaust flow in tired engines
- Compatible with typical unleaded pump petrol used in GX-series engines
- Suitable for routine overhaul or targeted repair after valve damage
- Supports easy installation when following the Honda service manual and correct clearances
Typical Applications:
Used during engine rebuilds or valve service on Honda-powered equipment such as site generators, plate compactors, water pumps, pressure washers, mixers, and garden machinery. Ideal for addressing hard starting, loss of power, backfiring, or poor emissions caused by a burnt or leaking exhaust valve in GX-series engines.
Also known as:
Engine exhaust valve, outlet valve, poppet valve (exhaust), cylinder head exhaust valve, valve head, exhaust poppet, exhaust port valve, rocker-driven exhaust valve.
Fits Models:
EC5000, GX340, GX340K1, GX340T1, GX340U1, GX340UT1, GX390, GX390K1, GX390T1, GX390T2, GX390U1, GX390UT1, GX610U1, GX620U1, GX670, GX690, GXV340RT2, GXV340T2, GXV390, GXV390K1, GXV390RT1, GXV670, GXV670U
Alternate Part Numbers:
14721-ZE3-000, 14721ZE3000
Product Specifications
| L&S Part No. | 14721 ZE3 000 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 14721ZE3000 |
| Unit of Sale | 1 |
| Applications | EC5000, GX340, GX340K1, GX340T1, GX340U1, GX340UT1, GX390, GX390K1, GX390T1, GX390T2, GX390U1, GX390UT1, GX610U1, GX620U1, GX670, GX690, GXV340RT2, GXV340T2, GXV390, GXV390K1, GXV390RT1, GXV670, GXV670U |
| Machine Type | Engines |
| Fits Brands | Honda |
| Fits Models | GX340K1 (GC05) | GX340U1 (GCAMK) | GX340UT1 (GCAVT) | GX340T1 (GCAWT) | GX340K1 (GDAE) | GX390K1 (GDAF) | GX390T1 (GCAET) | GX390UT1 (GCAKT) | GX390U1 (GCANK) | GX390T2 (GCBDT) | GX390K1 (GCAA) | GX610U1 (GCAPK) | GX620U1 (GCARK) | GX670 (GCAM) | GX690 (GDACK) | GXV670 (GJAH) | GXV670U (GJAHK) | GXV340T2 (GJABT) | GXV340RT2 (GJACT) | GXV390 (GJAA) | GXV390K1 (GEAD) | GXV390RT1 (GJADT) | EC5000 |
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