Description
Overview:
The Governor Arm Shaft is a genuine Honda component for GX340K1 and GX340U1 petrol engines, supplied under OEM No. 16541-ZE3-010. Built from durable steel to withstand continuous governor movement, it links the internal governor mechanism to the throttle lever to regulate engine speed under varying load. By keeping RPM stable, it helps engines start reliably, run smoothly and protect driven equipment. It is suitable for common construction and garden machinery powered by Honda GX340 and GX390 engines, such as generators, water pumps, plate compactors and pressure washers. As a direct-replacement shaft, it restores correct governor operation when the original part is worn, bent or corroded, supporting long service life and dependable performance in demanding site and outdoor conditions.
Key Features:
- Genuine Honda part for assured fit and compatibility (OEM 16541-ZE3-010).
- Steel construction for durability, wear resistance and stable governor action.
- Maintains consistent engine speed under load for smooth operation and equipment protection.
- Direct replacement for worn or damaged shafts; no modifications required on listed models.
- Precision-machined for free movement and accurate linkage alignment.
- Supports easy starting, steady idle and correct top RPM when paired with a properly adjusted governor.
- Suitable for frequent use in tough site environments and outdoor applications.
- Helps prevent overspeed conditions that can stress engine and attachments.
- Compatible across selected GX340 and GX390 variants used in many popular machines.
- Backed by Honda's engineering standards for reliability and long service intervals.
Typical Applications:
Used on Honda GX340/GX390-powered equipment including site generators, plate compactors, concrete saws, water pumps, pressure washers, chippers and small plant. Ideal for maintenance and repair where engine speed hunts, fails to reach governed RPM, or varies under load due to a worn shaft.
Also known as:
Governor shaft, governor arm shaft, governor lever shaft, governor spindle, speed control shaft, throttle governor shaft.
Fits Models:
EC5000, GX340K1, GX340T1, GX340T2, GX340U1, GX340UT1, GX390T1, GX390T2, GX390U1, GX390UT1, GX390UT2
Product Specifications
| L&S Part No. | 16541 ZE3 010 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Honda |
| OEM No. | 16541-ZE3-010 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Honda |
| Key Features | - Genuine Honda part for GX340K1 and GX340U1 engines - Steel construction for durability and wear resistance - Direct replacement; no modifications needed - Compatible with GX340 and GX390 engine variants - Precision-machined for accurate linkage alignment |
| Fits Models | GX340K1 (GC05) | GX340U1 (GCAMK) | GX340UT1 (GCAVT) | GX340T1 (GCAWT) | GX340T2 (GCBFT) | GX340K1 (GDAE) | GX390T1 (GCAET) | GX390UT1 (GCAKT) | GX390U1 (GCANK) | GX390UT2 (GCBCT) | GX390T2 (GCBDT) | EC5000 |
