Description
Overview:
This Valve Exhaust is a Genuine Honda part for GX340T2 and GX390T2 engines (OEM 14721-Z5T-900). It is a precision component that controls the release of hot gases from the combustion chamber and maintains a clean, reliable seal against the valve seat. Made from durable, heat-resistant steel with a smooth stem finish, it is built to withstand high temperatures and carbon exposure inside the cylinder head. Replacing a worn, burnt or bent valve helps restore compression, power and smooth running, and limits hot gas blow‐by that can cause hard starting and poor fuel economy. Designed specifically for the GX340T2 and GX390T2 series used across construction and garden machinery, this OEM valve fits like-for-like with the original part and supports long service life in demanding conditions.
Key Features:
- Genuine Honda OEM part for assured compatibility and fit
- Correct dimensions for GX340T2/GX390T2 cylinder head, seat and guide
- Heat-resistant valve-grade steel for long life under high exhaust temperatures
- Precision-ground face and stem to promote reliable seating and low wear
- Restores compression, power output and exhaust flow when replacing a faulty valve
- Direct-fit replacement; no modifications to head, rocker arms or pushrods
- Supports easier starting and stable idle after top-end repair
- Works with standard unleaded petrol and OEM springs, retainers and collets
- Suitable for frequent or continuous-duty use in tough site or garden environments
- Built for durability where dust, vibration and heavy load are common
Typical Applications:
Used during engine repairs or overhauls on GX340T2/GX390T2-powered equipment such as generators, pressure washers, water pumps, plate compactors, cement mixers, power trowels, log splitters, chippers and large tillers. Ideal when addressing symptoms like low compression, misfiring, loss of power or burnt valve faces, and as a preventative replacement on high-hour engines to restore reliable performance.
Also known as:
Poppet valve (exhaust side), outlet valve, discharge valve, exhaust poppet, valve head and stem assembly, cylinder head outlet valve, OEM 14721-Z5T-900 replacement for GX340/GX390 series.
Fits Models:
GX340T2, GX390T2
Alternate Part Numbers:
14721 Z5T 000, 14721-Z5T-900, 14721Z5T900, 14721Z5T000
Product Specifications
| L&S Part No. | 14721 Z5T 900 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 14721Z5T900 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Honda |
| Key Features | - Genuine Honda OEM part for GX340T2/GX390T2 engines - Heat-resistant valve-grade steel for high exhaust temperatures - Precision-ground face and stem for reliable seating - Direct-fit replacement; no modifications needed - Restores compression and power in faulty engines |
| Fits Models | GX340T2 (GCBFT) | GX390T2 (GCBDT) |
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