HZ

HZ Ignition Switch Box with Key Mounting Bolts for Honda GX340 GX390 GX240 GX270 & Predator 420cc

High-performance patio lawn and garden made for confident daily results

$31.70

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium patio lawn and garden quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Share

Why customers choose PatioZora Garden

Overview

The HZ ignition switch box with key mounting bolts is engineered to replace Honda GX-series ignition boxes and to fit a broad range of engines and power equipment. It supports engines from GX240 up to GX390 and extends to common 420cc and 439cc variants. The kit is compatible with popular platforms such as Harbor Freight Predator 420cc, Champion 389cc/420cc/439cc, and Generac 420cc engines. A spark plug is included to assist with routine maintenance checks and ongoing diagnostics.

Why this matters

Replacing worn or mismatched ignition boxes with a compatible unit helps minimize downtime for lawn and power equipment. The design emphasizes a secure electrical connection and reliable start control, offering practical confidence during busy seasons or unexpected workloads.

What you get

  • 1 ignition switch box with key
  • 2 mounting bolts
  • 1 spark plug

Key capabilities and compatible use cases

  • Wide compatibility across GX240, GX270, GX340, GX390 and related 420cc–439cc engines
  • Includes mounting hardware for a secure, straightforward installation
  • Spark plug included supports routine maintenance checks and quick diagnostics
  • Suitable for diverse equipment such as water pumps, snow blowers, and pressure washers

Installation and care tips

Use as a direct replacement on Honda GX engines or Honda clone models. Follow standard wiring practices and ensure mounting bolts are tightened to specification. The unit is designed for outdoor use and can withstand typical workshop or job-site conditions.

FAQ

Q: What engines is the HZ ignition switch box compatible with?

A: It fits Honda GX240, GX270, GX340, GX390 and similar GX-series engines, plus several 420cc to 439cc variants.

Q: What does the kit include?

A: Two mounting bolts and one spark plug are included for straightforward installation and regular maintenance.