Description
Overview:
The Thermowax Assembly is a temperature‐responsive actuator used in the automatic choke system of Honda small petrol engines. This genuine Honda part is designed for the GCV160 and GCV160A0, where it helps control the choke position as the engine warms up, improving starting, idle stability and overall running. The unit typically combines a sealed wax element with a metal plunger and a durable moulded housing to withstand heat, vibration and exposure to fuel vapour. By moving the choke from closed to open at the correct rate, it helps the engine reach a stable operating condition more quickly and reduces over‐rich or lean running during warm‐up. Supplied to OEM specification for a reliable, direct fit and correct stroke.
Key Features:
- Genuine Honda part for assured compatibility and performance on GCV160-series engines
- Direct replacement for OEM No. 16620-Z9L-003 and 16620-Z8D-842
- Sealed wax element and metal plunger for consistent temperature‐actuated movement
- Robust housing and components engineered for heat, vibration and fuel resistance
- Restores proper auto‐choke operation for easier cold starts and smoother warm‐up
- Correct dimensions and stroke for the GCV160 carburettor choke linkage
- Straightforward installation with basic hand tools; no modifications required
- Helps reduce hard starting, stalling when warm, and over‐rich exhaust fumes
- Suitable for routine maintenance or as a like‐for‐like service replacement
- Honda branded component for fit, longevity and repeatable performance
Typical Applications:
Commonly fitted to walk‐behind lawn mowers, pressure washers and other equipment powered by Honda GCV160 engines. Replace the thermowax assembly when experiencing difficult cold starts, prolonged choke engagement, poor idle after warm‐up, or when servicing the carburettor and choke linkage to restore reliable operation.
Also known as:
Thermowax valve, waxstat actuator, auto‐choke thermostat, choke wax actuator, thermal wax plunger, choke thermostat actuator, engine wax pellet actuator, thermal actuator for carburettor choke.
Fits Models:
GCV160, GCV160A0
Alternate Part Numbers:
16620-Z9L-003, 16620 Z8D 842, 16620-Z8D-842, 16620Z8D842, 16620Z9L003, 16620 Z9L 003
Product Specifications
L&S Part No. | 16620 Z9L 003 |
---|---|
Part Type | Genuine Part |
Manufacturer | Honda |
OEM No. | 16620Z9L003 |
Unit of Sale | 1 |
Applications | GCV160, GCV160A0 |
Machine Type | Engines |
Fits Brands | Honda |
Fits Models | GCV160A0 (GJAPA) |