The Wacker Neuson Fuel Injector Valve Complete is a genuine OEM component designed for the APT4S and APT4T pump series. Sourced directly from Wacker Neuson, this is the exact part installed at the factory — ensuring a correct, direct-fit replacement with no guesswork on compatibility. Coverage spans the full APT4T and APT4S lineups, including surge brake, electric brake, and cold weather variants, so you can confirm the right fit before you order.
Key Features
- OEM-Calibrated Fuel Delivery Spec — Manufactured to Wacker Neuson's exact flow and pressure tolerances, maintaining the precise metered fuel delivery the engine depends on.
- Direct-Fit Replacement — Matches the original mounting configuration and connection points of the APT4S and APT4T pumps for a straightforward swap.
- 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 Engine Performance — A correctly functioning fuel injector valve ensures clean, timed fuel atomization; a worn or leaking valve leads to hard starts, rough running, and loss of pump output.
- Fuel System Integrity — As a genuine OEM assembly, this valve meets Wacker Neuson's sealing and pressure-retention standards, reducing the risk of fuel leaks in the injection circuit.
The fuel injector valve controls the precise delivery of fuel into the engine's combustion chamber, regulating both the timing and volume of each injection event. When it functions correctly, the engine starts reliably, runs smoothly, and delivers consistent power to drive the pump. A failing injector valve can cause rough idling, misfires, increased fuel consumption, or a complete failure to start — making prompt replacement essential to keeping the unit operational.
Part Details
| Part Number | 5200020196 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Fuel Injector Valve 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.
Wacker Neuson