The Wacker Neuson 5200020032 is a genuine OEM Crankshaft Gear designed for the APT4S and APT4T self-priming pump series, including Cold Weather, Surge Brake, and Electric Brake configurations. As a direct OEM part, the 5200020032 is manufactured to the same standards as the original component installed at the factory, ensuring a correct fit within the pump's powertrain without the need for adjustment or modification. Compatible across multiple APT4S and APT4T variants, this crankshaft gear is the straightforward choice when restoring proper pump operation.
Key Features
- Genuine OEM Gear Tolerancing — Manufactured to exact tooth profile and dimensional specifications, ensuring correct mesh with mating drivetrain components inside the APT pump's crankcase.
- Drop-In Compatibility — Engineered to install directly in place of the original crankshaft gear, aligning correctly with existing shafts and bearing surfaces without rework.
- Broad APT Series Coverage — Fits APT4S (standard and Cold Weather skid-mounted), APT4T (Surge Brake, Electric Brake, and Cold Weather variants), covering the full range of 4-inch trailer pump configurations.
- Sustained Power Transfer — A correctly functioning crankshaft gear maintains consistent torque delivery from the engine to the pump end; worn or chipped gear teeth cause vibration, loss of prime, and accelerated crankshaft bearing wear.
- Verified Part Number — Order with confidence using part number 5200020032 — cross-referenced directly against Wacker Neuson APT4S and APT4T bill-of-materials records.
The crankshaft gear is a precision-machined component that transfers rotational power from the crankshaft to the pump's drive system, keeping the impeller spinning at the correct speed to move water and solids efficiently. When this gear wears down or loses tooth integrity, the drivetrain loses synchronization, which can produce knocking, erratic pump output, or a complete loss of flow. Replacing the crankshaft gear promptly with the correct OEM part restores full power transfer and protects the surrounding crankshaft and bearing assembly from secondary damage.
Part Details
| Part Number | 5200020032 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Crankshaft Gear |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
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.
