The Wacker Neuson 5200021603 Air Filter Complete is a genuine OEM component designed for the APT4S and APT4T pump series, including Cold Weather and standard configurations. As a direct OEM replacement sourced from Wacker Neuson, part 5200021603 is built to the exact specifications required to maintain proper engine airflow and protection across all covered variants. Compatible models include the APT4S Pump with Skid, APT4S Pump with Skid Cold Weather, APT4T Pump with Electric Brake, and APT4T Pump with Surge Brake — in both standard and Cold Weather configurations. Installing the correct air filter is one of the simplest steps operators can take to protect engine performance and extend service life in demanding pump applications.
Key Features
- OEM Filtration Media: — Genuine Wacker Neuson filtration material matched to the engine's airflow requirements, ensuring consistent particulate capture without restricting intake volume.
- Drop-In Replacement: — Engineered to seat and seal exactly like the original, fitting the APT4S and APT4T filter housings without modification to mounting hardware or housing covers.
- Broad APT Series Coverage: — Fits APT4S standard and Cold Weather pump variants, plus APT4T models equipped with either Electric Brake or Surge Brake systems, in both standard and Cold Weather trim.
- Engine Protection in Demanding Conditions: — A clean, properly sealed air filter prevents abrasive particles and moisture from entering the engine — especially critical on pump units operating in dusty or cold-weather field environments.
- Fuel Efficiency and Clean Combustion: — A clogged or incorrect filter disrupts the air-fuel mixture, leading to rough running, increased fuel consumption, and premature engine wear. The 5200021603 keeps combustion conditions consistent.
An air filter complete is the primary barrier between the engine's intake and the surrounding environment. It captures dust, debris, and airborne particles before they can enter the combustion chamber, where even fine contaminants cause accelerated wear to pistons, rings, and cylinder walls. On pump equipment like the APT4S and APT4T series — which often operate in wet, gritty, or cold-weather conditions — a properly functioning air filter is essential to maintaining consistent engine output and long-term reliability. When the filter becomes clogged or damaged, air restriction causes the engine to run rich, lose power, and consume more fuel; left unchecked, ingested debris can cause catastrophic internal damage.
Part Details
| Part Number | 5200021603 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Air Filter Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
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.
