The Multiquip 18381ZH8800 is a genuine OEM Muffler Gasket designed for a broad range of Multiquip and Whiteman equipment including plate compactors, mortar mixers, walk-behind trowels, welders, centrifugal pumps, masonry saws, and generators. As a factory-sourced component, 18381ZH8800 delivers the correct material grade and sealing profile to match Honda engine exhaust configurations across all compatible models. Verified fitment includes MVC82VHW, MVC82VH, MVC64VHW, MVC64VH, MVC90H, WM70S/P, MC64P/S, MC44S, CA4HM, CA-4-4H, GAW135H, QP205SH, MP1455HP, MP120E, MP115E, MP1H, GAC2.2HZ, and G55H. Sourcing the correct OEM gasket ensures a proper exhaust seal from the first startup — protecting engine performance across your fleet.
Key Features
- Genuine OEM Sealing Integrity — Factory-sourced gasket material provides the correct compression rating and thermal resistance for Honda engine exhaust joints, preventing combustion gas leaks at the muffler interface.
- Direct-Fit Replacement — Matches the original bolt pattern and flange profile for a drop-in install with no trimming, shimming, or modification to the exhaust header or muffler mounting surface.
- Wide Fleet Compatibility — A single part number covers plate compactors (MVC82VHW, MVC64VHW, MVC90H), Whiteman mixers (WM70S/P), walk-behind trowels (CA4HM, CA-4-4H), pumps, saws, welders, and generators — simplifying parts stocking across multiple machine types.
- Exhaust Leak Prevention — A failed or worn muffler gasket allows exhaust gases to escape at the joint, causing power loss, elevated noise levels, and potential heat damage to surrounding components. This gasket restores the seal and keeps combustion gases routed correctly.
- Exhaust System Safety — A properly sealed muffler gasket prevents hot exhaust gases from venting toward fuel lines, wiring, or the operator — a genuine concern on compact equipment where components are closely spaced.
The muffler gasket forms the critical seal between the engine's exhaust port and the muffler body, preventing combustion gases from escaping at the joint. On small Honda-powered equipment, this gasket is exposed to repeated heat cycling and mechanical vibration, which gradually degrades the sealing material. When the gasket fails, exhaust gases leak at the flange, producing a sharp ticking noise at idle, a noticeable drop in back-pressure, and increased risk of heat exposure to nearby components — all signs that the gasket needs immediate replacement.
DHS Equipment is an authorized Multiquip parts dealer. For fitment questions or help confirming compatibility with your machine's serial number, contact our parts team directly.
Part Details
| Part Number | 18381ZH8800 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Muffler Gasket |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | CA4HM |
| Welders | GAW135H |
| Plate Compactors | MVC82VHW |
| Plate Compactors | MVC82VH |
| MQ Mixers | MC64P/S |
| Whiteman Mixers | WM70S/P |
| MQ Mixers | MC44S |
| Centrifugal Pumps | QP205SH |
| Saws | MP1455HP |
| Saws | MP120E |
| Saws | MP115E |
| Saws | MP1H |
| Gasoline Powered Generators | GAC2.2HZ |
| Plate Compactors | MVC90H |
| Plate Compactors | MVC64VHW |
| Plate Compactors | MVC64VH |
| International Walk-Behind Power Trowels | CA-4-4H |
| Vibrators | G55H |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
