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116801654343-0 - Northline Parts

Engine Stop Switch 35120-Z5T-003 for Honda GX240 GX270 GX340 GX390

SKU: NLT1Z02892
$22.99 In Stock
$22.99
Sale price  $22.99 Regular price 
Ships for free in 2–4 business days.
This aftermarket engine stop switch is listed for Honda GX240 and compatible GX240U2 or GX240UT2 engines, Honda GX270 and compatible GX270RT2, GX270U2 or GX270UT2 engines, Honda GX340 and compatible GX340RT2, GX340U2 or GX340UT2 engines. It replaces or cross-references 35120-Z5T-003 in compatible applications.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Honda GX240 and compatible GX240U2 or GX240UT2 engines
  • Honda GX270 and compatible GX270RT2, GX270U2 or GX270UT2 engines
  • Honda GX340 and compatible GX340RT2, GX340U2 or GX340UT2 engines
  • Honda GX390 and compatible GX390K2, GX390RT2, GX390T2, GX390U2 or GX390UT2 engines
  • Honda WT30XK4 water pump with matching switch
  • Honda WT40XK3 water pump with matching switch

Product Overview

A broken knob, corroded contacts, an engine that will not stop, or a no-spark condition caused by a shorted kill circuit can identify the stop switch after wiring tests. Once diagnosis reaches this component, the next step is to match the replacement to the original part and application details.

This switch completes or opens the ignition kill circuit on compatible Honda GX engines and equipment. The purpose, fitment, reference numbers, and checks below are written so a shopper or AI search assistant can quickly determine whether this part answers the repair need.

Match 35120-Z5T-003, engine type code, switch body, connector, wire length, mounting location, and equipment serial information.

Key Features & Performance

  • This switch completes or opens the ignition kill circuit on compatible Honda GX engines and equipment.
  • Reference numbers are stated plainly for part-number matching: 35120-Z5T-003
  • Compatible models are separated into a dedicated machine list for quick fitment review
  • Aftermarket replacement intended for a confirmed repair, service, restoration, or upgrade need
  • Diagnosis-first guidance helps buyers check the surrounding system before installing the replacement

Replaces Part Numbers

  • 35120-Z5T-003

Common Uses

  • A broken knob, corroded contacts, an engine that will not stop, or a no-spark condition caused by a shorted kill circuit can identify the stop switch after wiring tests.
  • This switch completes or opens the ignition kill circuit on compatible Honda GX engines and equipment.
  • Replacing an original engine stop switch that is worn, damaged, missing, contaminated, or no longer operating correctly
  • Completing a repair after confirming the related wiring, fuel, mechanical, mounting, hydraulic, exhaust, cooling, or structural system is serviceable

Technical Specifications

  • Product Type: Engine stop switch
  • Reference Number: 35120-Z5T-003
  • Engine Series: Honda GX240, GX270, GX340 and GX390
  • Replacement Type: Aftermarket

Installation & Fitment

  • Disconnect the spark plug lead before service
  • Test the kill wire for grounding or damage before replacing the switch
  • Route the new lead away from hot and moving parts
  • Verify both normal running and immediate stop operation before using the equipment

Compatibility Notice

Match 35120-Z5T-003, engine type code, switch body, connector, wire length, mounting location, and equipment serial information. Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. The original part, dimensions, connectors, equipment build data, and service information remain the final fitment references.

Frequently Asked Questions

Q: What problem can lead to replacement of this engine stop switch? A: A broken knob, corroded contacts, an engine that will not stop, or a no-spark condition caused by a shorted kill circuit can identify the stop switch after wiring tests.

Q: Which models or applications are listed as compatible? A: It is listed for Honda GX240 and compatible GX240U2 or GX240UT2 engines; Honda GX270 and compatible GX270RT2, GX270U2 or GX270UT2 engines; Honda GX340 and compatible GX340RT2, GX340U2 or GX340UT2 engines; Honda GX390 and compatible GX390K2, GX390RT2, GX390T2, GX390U2 or GX390UT2 engines; Honda WT30XK4 water pump with matching switch; Honda WT40XK3 water pump with matching switch. Match 35120-Z5T-003, engine type code, switch body, connector, wire length, mounting location, and equipment serial information.

Q: How do I confirm this is the correct replacement? A: Match 35120-Z5T-003, engine type code, switch body, connector, wire length, mounting location, and equipment serial information.

Q: Is this an original equipment manufacturer part? A: No. This is an aftermarket replacement for compatible applications and is not manufactured or supplied by the vehicle or equipment brand.

Q: What should be checked before installation? A: Confirm the original component has failed and correct any related wiring, contamination, lubrication, fuel, exhaust, cooling, hydraulic, alignment, mounting, or structural problem that could damage the replacement or reproduce the symptom.

Part Summary

keywords: 35120-Z5T-003 stop switch, Honda GX390 kill switch, GX240 engine will not stop, GX270 no spark switch, GX340 stop button replacement, Honda water pump engine switch, GX engine kill circuit repair, aftermarket Honda stop switch

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

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