The Multiquip 21656 Muffler Yanmar 4TVNV84T is a genuine OEM muffler designed for the STXD6i super-sized hydrostatic ride-on trowel. As a direct Multiquip OEM part, 21656 is manufactured to the same specification as the original component, ensuring a correct, straight-swap installation on your machine. This muffler is purpose-built for the Yanmar 4TVNV84T diesel engine that powers the STXD6i, so you can fit it with confidence knowing it matches the original exhaust outlet dimensions and mounting configuration. DHS Equipment supplies this part direct, backed by Multiquip OEM sourcing.
Key Features
- Genuine OEM Exhaust Match — Manufactured to Multiquip OEM specification for the Yanmar 4TVNV84T diesel engine, delivering correct back-pressure characteristics and sound attenuation for this engine family.
- Direct Bolt-On Replacement — Engineered to align with the original exhaust port and mounting hardware on the STXD6i, allowing straightforward removal and reinstallation without adapters or rework.
- STXD6i Fitment Confirmed — Verified for the Multiquip STXD6i super-sized hydrostatic ride-on trowel series; use part number 21656 to confirm the correct application before ordering.
- Sustained Engine Performance — A sound, properly sealed muffler maintains correct exhaust flow and back-pressure, protecting engine efficiency and power output on long finishing runs.
- Emissions and Operator Safety — A correctly fitted OEM muffler ensures exhaust gases are routed and dispersed as intended, supporting safe operation in enclosed or semi-enclosed finishing environments.
A muffler manages the flow and noise of exhaust gases leaving the engine after combustion. On a diesel-powered ride-on trowel like the STXD6i, the muffler also helps maintain the correct exhaust back-pressure that the Yanmar 4TVNV84T engine is tuned to operate with — too much or too little can affect engine efficiency and output. When a muffler cracks, corrodes, or develops a leak, exhaust gases can escape before the silencing chamber, raising noise levels sharply and potentially directing hot gases toward the operator or other components; prompt replacement with the correct OEM part restores safe, efficient operation.
For questions about part number 21656 or to confirm fitment for your specific STXD6i configuration, contact the DHS Equipment team directly.
Part Details
| Part Number | 21656 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Muffler Yanmar 4TVNV84T |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXD6i |
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.
