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Thermowax Assembly for Honda GCV160 Engine - OEM No. 16620-Z9L-003

Thermowax Assembly for Honda GCV160 Engine - OEM No. 16620-Z9L-003
Thermowax Assembly for Honda GCV160 Engine - OEM No. 16620-Z9L-003
Part No.
16620 Z9L 003
In stock
Dispatched today if ordered before 4pm
Dispatched next working day

£36.96 £30.80

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

More Information
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)

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Customer Questions
Could you confirm this part is right for my Honda lawnmower? It’s model is: GCV160E Serial: GJAAE 3427091
My Honda dealer has come back to me on this one for you and they have confirmed, this is the correct part for your machine: 16620 Z8D 842.
Is this part correct for my GCV 135 Mower with Auto Choke (Easy Start) ?
16620 Z8D 842 is correct for your model.
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