The Multiquip 21951 Muffler Kit with Bracket Gasket and Hardware is a genuine OEM replacement designed for HTX44Y4 and HTX44Y5 hydrostatic ride-on power trowels. This complete kit includes the muffler, mounting bracket, gasket, and hardware, delivering everything needed for a full exhaust system service in a single package. As a genuine Multiquip OEM part, 21951 is manufactured to the same specifications as the original component installed at the factory. Confirmed fitment for HTX44Y4 and HTX44Y5 Yanmar-powered trowels means you can order with confidence.
Key Features
- Genuine OEM Exhaust Integrity — Manufactured to original specification, ensuring correct exhaust flow, back pressure, and heat dissipation for the HTX44 Yanmar engine platform.
- Complete Kit Format — Includes the muffler, mounting bracket, gasket, and all required hardware so you have every component on hand before the job starts.
- Direct Fitment for HTX44Y4 and HTX44Y5 — Engineered specifically for the HTX44 hydrostatic ride-on trowel series with Yanmar Y4 and Y5 diesel engines.
- Proper Seal from Day One — The included OEM gasket ensures a leak-free exhaust seal at installation, preventing carbon buildup, fume intrusion, and premature bracket wear.
- Exhaust System Safety — A correctly sealed and mounted muffler is essential for operator safety on ride-on trowels; using a matched OEM kit eliminates the risk of improper fitment that can result in exhaust leaks near the operator.
The muffler on a ride-on power trowel is responsible for directing hot combustion gases away from the engine and reducing exhaust noise to safe operating levels. The mounting bracket keeps the muffler securely positioned against engine vibration — a common stress point on trowels working over large concrete slabs. When the muffler, gasket, or bracket degrades, exhaust gases can leak near the operator or the machine's fuel and hydraulic systems, and excessive noise or heat buildup can signal underlying engine stress. Replacing the full assembly with Multiquip 21951 restores proper exhaust management and keeps the HTX44 series running safely and efficiently.
Part Details
| Part Number | 21951 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Muffler Kit with Bracket Gasket and Hardware |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
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.
