The Wacker Neuson V-Belt is a genuine OEM V-Belt designed for the APT4S and APT4T pump series, including surge brake, electric brake, and cold weather configurations. As a factory-sourced component, this belt is manufactured to the exact specifications required by Wacker Neuson, ensuring a direct, no-guesswork replacement for worn or damaged belts on your pump. It fits the full range of APT4S and APT4T models — including cold weather variants — making it the correct choice for a wide spread of pump configurations in this series.
Key Features
- OEM Belt Profile and Tension Rating — Manufactured to the exact cross-section and length spec required by Wacker Neuson, so the belt seats correctly in the pulley grooves without slippage or excessive wear.
- Drop-In Replacement — Routes and installs the same way as the original, fitting the existing pulley arrangement on APT4S and APT4T pumps without modification to hardware or brackets.
- Broad APT Series Coverage — Fits APT4S Pump with Skid, APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, and all corresponding cold weather variants.
- Consistent Power Transfer — A properly tensioned V-Belt maintains efficient drive transfer from the engine to the pump impeller; a worn or cracked belt causes slip, reduced flow output, and uneven pump performance.
- Built for Cold Weather Conditions — Covers cold weather pump models, meaning the belt material is spec'd to perform reliably across the operating temperature range those configurations are designed to handle.
A V-Belt transmits rotational power from the engine's drive pulley to the pump's driven pulley, keeping the impeller spinning at the speed needed to move water efficiently. Over time, belts stretch, crack, or glaze — reducing grip in the pulley groove and causing the pump to lose prime or deliver lower-than-rated flow. Replacing a worn belt promptly restores full drive engagement and protects the pump from the strain that comes with a slipping or snapping belt mid-operation.
Part Details
| Part Number | 5200020111 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | V-Belt |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
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.
