The Multiquip 20643 Lower Motor Machined Housing is a genuine OEM component designed for HTX44 and STX55 series hydrostatic ride-on power trowels. This part is sourced directly through Multiquip's OEM supply chain, ensuring it meets the original engineering specifications for these machines. Compatible models include the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTX6H, HTXG6DF, STX55J6, STX55Y6, STX6H, and STXD6i. When you need an exact-fit structural replacement, part number 20643 is the correct choice for keeping these trowels running at full capacity.
Key Features
- Genuine OEM Machined Precision — Produced to Multiquip's original tolerances, ensuring the housing seats and aligns correctly with the motor assembly without dimensional compromise.
- Direct Structural Replacement — Mounts in the same position as the original lower motor housing, integrating with existing fastener patterns and motor interfaces on HTX and STX series trowels.
- Broad HTX and STX Series Fitment — Confirmed for HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTX6H, HTXG6DF, STX55J6, STX55Y6, STX6H, and STXD6i ride-on power trowels.
- Structural Integrity Where It Counts — The lower motor housing carries load and maintains motor positioning during operation; a cracked or worn housing leads to motor misalignment and uneven blade performance across the trowel head.
- Verified OEM Part Number — Ordering by part number 20643 confirms you are receiving the correct Multiquip-sourced housing, not a dimensionally approximate substitute.
The lower motor housing is a structural enclosure that mounts and protects the trowel's motor unit at its base, maintaining precise alignment between the motor and the rotor assembly beneath it. On hydrostatic ride-on trowels like the HTX and STX series, correct motor positioning is critical — even minor misalignment at the housing level can translate into inconsistent blade pitch, vibration, or uneven finishing across the concrete surface. When the housing is cracked, worn, or damaged, motor stability is compromised and the entire trowel head assembly can develop play that degrades finish quality and accelerates wear on adjacent components.
Need help confirming fitment for your machine? Contact DHS Equipment and our team will verify that Multiquip part 20643 is the right lower motor machined housing for your HTX or STX series ride-on trowel.
Part Details
| Part Number | 20643 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lower Motor Machined Housing |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | HTX6H |
| Whiteman Ride-On Power Trowels | HTXG6DF |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | STX55Y6 |
| Whiteman Ride-On Power Trowels | STX6H |
| 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.
