The Multiquip 11986542290 Fan Belt is a genuine OEM component designed for STX55J6 and STX55Y6 series hydrostatic ride-on power trowels. As a direct factory replacement, this belt matches the original specifications for length, width, and construction — ensuring proper tension and drive engagement right out of the box. Sourced directly through Multiquip's authorized parts program, the 11986542290 is the correct part for operators and service technicians maintaining these machines.
Key Features
- Genuine OEM Construction: Built to the same belt profile and material grade as the original, maintaining proper flex and grip across the full operating temperature range of the engine cooling system.
- Direct-Fit Replacement: Engineered to drop in place of the original belt with no trimming or adjustment to pulley positioning required.
- Confirmed Fitment: Verified for STX55J6 and STX55Y6 Whiteman super-sized hydrostatic ride-on trowels.
- Consistent Cooling Performance: A properly tensioned fan belt keeps the engine-driven fan running at the correct speed — preventing heat buildup during extended finishing cycles.
- Reduced Risk of Mid-Job Failure: Belt wear is a common service interval item; replacing with a genuine OEM part helps avoid unexpected slippage or breakage during critical pours.
The fan belt transfers rotational power from the engine's crankshaft pulley to the cooling fan, keeping the engine operating within its safe temperature range. When a fan belt stretches, cracks, or snaps, the cooling fan slows or stops entirely — leading to rapid engine overheating, especially under the sustained load typical of ride-on trowel work. Regular inspection and timely replacement with the correct belt, such as the Multiquip 11986542290, is a straightforward step that protects the engine from heat-related damage.
Part Details
| Part Number | 11986542290 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Fan Belt |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | STX55Y6 |
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.
