The Multiquip 43089 Bearing Extender Collar is a genuine OEM component designed for STXDF, MD80, and MD105 series ride-on power trowels. Sourced directly from Multiquip, this collar meets the exact dimensional and material standards of the original production part. It is a direct-fit replacement for hydrostatic ride-on trowels, confirming compatibility across the STXDF dual-fuel super-sized series and the MD-series mid-sized hydrostatic units. When your trowel is down, using the correct OEM part gets it back to spec without guesswork.
Key Features
- OEM-Grade Dimensional Accuracy — Manufactured to original tolerances, ensuring the collar seats correctly within the bearing assembly without requiring rework or shimming.
- Direct-Fit Replacement — Engineered to install in place of the original collar on hydrostatic ride-on trowel rotor assemblies, maintaining proper bearing alignment and shaft positioning.
- Confirmed Fitment — Verified for STXDF, MD80, and MD105 ride-on power trowels; always cross-reference your model and serial number before ordering.
- Protects Bearing Integrity — A correctly fitted extender collar keeps the bearing properly located on the shaft; wear or incorrect fitment accelerates bearing failure and can cause rotor wobble during finishing passes.
- Genuine Multiquip Part — Backed by Multiquip's OEM parts program, this is the same collar supplied in new machine production — not a reverse-engineered substitute.
The bearing extender collar positions and spaces the rotor shaft bearing at the correct axial location within the trowel's drive assembly. By maintaining precise bearing placement, the collar ensures the rotor spins true, transferring power evenly to the finishing blades without vibration or shaft deflection. When this collar wears, cracks, or is missing, bearing loads shift unevenly, leading to premature bearing wear, increased vibration, and inconsistent blade pitch response on the trowel.
Part Details
| Part Number | 43089 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Bearing Extender Collar |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXDF |
| Hydraulic Ride-On Power Trowels | MD80 |
| Hydraulic Ride-On Power Trowels | MD105 |
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.
