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SKU:
NLT1Q02562
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Muffler and Exhaust Assembly for Honda GX340 GX390 Engines 18310-ZE2-W61
$48.99
In Stock
$48.99
Sale price
$48.99
Regular price
Aftermarket muffler and exhaust assembly for Honda GX340 and GX390 engines; replaces 18310-ZE2-W61 and related muffler references.
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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 GX340 engines with matching exhaust configuration
- Honda GX390 engines with matching exhaust configuration
Product Overview
A rusted-through muffler, cracked outlet, broken mounting flange, or exhaust leak can make a GX340 or GX390 painfully loud and direct hot gases where they do not belong. This assembly restores the exhaust path on compatible engine configurations.
GX engines appear on generators, pressure washers, pumps, compactors, and other equipment with different exhaust layouts. Match the flange, outlet direction, heat-shield clearance, mounting points, and 18310-ZE2-W61 family before ordering—not just the engine model on the recoil cover.
Key Features & Performance
- Muffler body and exhaust outlet configuration for compatible GX engines
- Replacement for corroded or split exhaust assemblies
- Heat-shielded design as pictured
- Engine-side flange must match the original
- Suitable for multiple equipment types using GX340/GX390 power
Replaces Part Numbers
- 18310-ZE2-W61
- 18310-ZE2-W62
- 18320-ZE2-W61
- 18320-ZE2-W62
- 18320-ZE3-W02
Common Uses
- Replacing a muffler with rust holes
- Repairing exhaust leakage at a cracked body or pipe
- Restoring safer exhaust direction on work equipment
- Reducing excessive noise after confirming the muffler is damaged
Technical Specifications
- Product Type: Engine Muffler / Exhaust Assembly
- Compatible Engines: Honda GX340 and GX390
- Approximate Size: 6-7/8 in L x 7-1/4 in W x 5-1/2 in H
- Primary Reference: 18310-ZE2-W61
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Let the engine and exhaust cool completely
- Disconnect the spark-plug lead and support the old muffler during removal
- Inspect studs, threads, flange flatness, and surrounding guards
- Use new exhaust gaskets and hardware where required
- Run the engine outdoors and check for leakage without touching the hot assembly
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, engine or equipment configuration, installed options, and previous repairs can affect fitment. Compare the original part, identifying numbers, dimensions, connections, and mounting details before purchase.
Frequently Asked Questions
Q: Will this fit every GX390-powered machine? A: No. Equipment manufacturers can use different muffler shapes and outlet directions. Compare the complete original assembly.
Q: Can a cracked muffler make the engine run poorly? A: A severe restriction can affect performance, while a crack mainly causes noise and hot-gas leakage. Carburetion and ignition should be diagnosed separately.
Q: Are gaskets included? A: Package contents should be confirmed from the listing images; replace exhaust gaskets during installation even if they must be sourced separately.
Q: Is this made by Honda? A: No. It is an aftermarket exhaust assembly for compatible Honda engine applications.
Part Summary
keywords: Honda GX390 muffler replacement, 18310-ZE2-W61 exhaust, GX340 muffler assembly, small engine exhaust leak repair, Honda generator muffler, GX390 exhaust pipe, aftermarket Honda engine muffler
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.