The Multiquip 45491 Muffler MRX is a genuine OEM exhaust muffler designed for Whiteman ride-on power trowel models LD6, LD6SL, and LD60. As a direct OEM replacement, part 45491 is produced to the same specifications as the original component, ensuring a correct installation without modification. DHS Equipment sources this part directly through authorized Multiquip channels, so you can trust you are receiving an authentic component for your machine. Verify your model code against the fitment list before ordering to confirm compatibility.
Key Features
- Genuine OEM Exhaust Specification — Manufactured to the original exhaust flow and backpressure parameters required by the engine on these trowel models, not a generic approximation.
- Direct Bolt-On Replacement — Matches the original mounting flange and outlet geometry of the factory muffler, allowing straightforward removal and reinstallation.
- Confirmed Fitment for LD-Series Trowels — Verified for Whiteman ride-on power trowel models LD6, LD6SL, and LD60.
- Protects Engine Performance — A properly functioning muffler maintains correct exhaust scavenging; a cracked or failed unit can cause power loss, increased operating temperature, and rough running.
- Operator Safety Compliance — An intact exhaust muffler keeps hot gases and combustion noise directed away from the operator — critical on a ride-on machine where the operator sits close to the engine compartment.
The muffler is responsible for routing hot exhaust gases away from the engine and reducing combustion noise to an acceptable operating level. On a ride-on power trowel, the muffler is positioned to direct exhaust clear of the operator platform and blade drive components. When a muffler cracks, corrodes, or loses its seal, exhaust gases can escape into the engine bay, noise levels rise sharply, and engine back-pressure changes in ways that reduce power output and increase wear. Replacing a damaged muffler with the correct OEM unit restores safe, efficient engine operation and keeps the machine running as intended.
Part Details
| Part Number | 45491 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Muffler MRX |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | LD6/LD6SL |
| Whiteman Ride-On Power Trowels | LD60 |
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.
