Overview

The Honda GX Series on off switch is the ignition kill switch for the GX small engine range, suitable for the GX160, GX200, GX240, GX270, GX340 and GX390 models across 5.5, 6.5, 8, 11 and 13 horsepower. It is the switch that grounds the ignition coil to stop the engine, giving the operator a secure shut off without any wiring modifications.

The listing gives the OEM part numbers as 35120-ZE1-015 for the GX160 and 35120-Z5T-003 for the GX240, GX270 and GX390. The switch uses a standard two wire setup: one lead to the ignition coil and one earth or ground wire, with the switch grounding the coil to kill the engine. It has a durable moulded housing with a mounting flange and printed on off indicators.

Key Features

• Fits GX160, GX200, GX240, GX270, GX340 and GX390
• 5.5, 6.5, 8, 11 and 13 HP ratings
• OEM 35120-ZE1-015 (GX160) and 35120-Z5T-003 (GX240/270/390)
• Standard two wire setup, no custom wiring
• Grounds the coil to kill the engine
• Durable moulded housing with on off indicators

Specifications

• Fits models: GX160, GX200, GX240, GX270, GX340, GX390
• Engine power: 5.5, 6.5, 8, 11, 13 HP
• Part numbers: 35120-ZE1-015, 35120-Z5T-003
• Wiring: two wire, one coil lead and one earth
• Construction: moulded housing with mounting flange
• Finish: black with printed on off indicators

Applications

• Pressure washers with Honda GX engines
• Plate compactors and generators
• Water pumps and tillers
• Mowers and other GX based machinery
• Replacing a faulty engine stop switch

What You Need to Complete the Job

Service the engine in the same job as an air filter for the GX340 GX390 and an air filter cover assembly. A starter rope spool covers the pull side, and the Pressure Washers Accessories range holds the rest of the service parts.

Frequently Asked Questions

How does the switch work?

The switch grounds the ignition coil to kill the engine. In the standard two wire setup, one wire runs to the coil lead and the other to an earth point, and flicking the switch to off grounds the coil so the engine stops. It is the same action as the factory kill circuit.

Is this a genuine Honda part?

The listing describes it as an OEM grade switch that replaces the OEM part numbers 35120-ZE1-015 for the GX160 and 35120-Z5T-003 for the GX240, GX270 and GX390. It is a replacement part that matches those fitments, not the factory part itself.

Which engines does it fit?

The listing covers the GX160, GX200, GX240, GX270, GX340 and GX390, spanning 5.5, 6.5, 8, 11 and 13 horsepower. One switch covers the multiple horsepower ratings and models in the GX range.