The Wacker Neuson Pinion Complete is a genuine OEM component designed for the APT4S and APT4T pump series, including surge brake, electric brake, and cold weather variants. As a factory-sourced part, it is manufactured to the exact specifications required for proper gear engagement and drive function within these pump assemblies. This pinion complete covers the full range of APT4S and APT4T configurations, making it the correct choice whether you are servicing a standard skid-mounted unit or a cold weather-equipped model. Verify your model number against the fitment list before ordering to ensure you receive the right part for your machine.
Key Features
- Genuine OEM Gear Tolerancing — Manufactured to Wacker Neuson's exact tooth profile and hardness specifications, ensuring proper mesh and load transfer within the pump drive assembly.
- Drop-In Drive Replacement — Designed to install directly into the existing gear housing without modification, maintaining correct shaft alignment and bearing seat engagement.
- Broad APT Series Coverage — Fits APT4S (with skid) and APT4T (surge brake and electric brake) models, including all cold weather variants across both series.
- Sustained Drive Efficiency — A correctly functioning pinion delivers smooth, consistent torque transfer to the pump mechanism; a worn or damaged pinion causes gear slippage, increased vibration, and loss of pumping output.
- Sourced Direct from Wacker Neuson — Genuine OEM part number 5200020249 ensures you are receiving the same component used in original production, not a reverse-engineered substitute.
The pinion complete is a core gear component in the pump's mechanical drive train, responsible for transferring rotational force from the drive shaft to the pump mechanism. It works in mesh with the mating gear to multiply or redirect torque, keeping the pump running at the correct speed and output. When a pinion wears down or loses tooth integrity, the result is rough operation, audible gear noise, and ultimately a loss of drive — leaving the pump unable to move fluid effectively until the component is replaced.
Part Details
| Part Number | 5200020249 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pinion Complete |
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.
