The Wacker Neuson 5200020996 Muffler is a genuine OEM replacement designed for the APT4S and APT4T series self-priming trash pumps. Sourced directly from Wacker Neuson, this muffler is the exact part specified for these pumps at the time of manufacture, including standard and cold weather configurations. Compatible across the APT4S Pump with Skid, APT4T Pump with Electric Brake, APT4T Pump with Surge Brake, and their respective cold weather variants, this part delivers a direct, hassle-free swap. When your original muffler is cracked, damaged, or no longer controlling exhaust noise effectively, the 5200020996 restores the pump to its intended operating condition.
Key Features
- Genuine OEM Construction — Manufactured to the exact material and dimensional specifications of the original muffler, ensuring proper exhaust flow and noise attenuation for the APT4 pump engine.
- Direct Bolt-On Replacement — Matches the original mounting configuration on APT4S and APT4T pumps, so the swap is straightforward with no fabrication or adapter hardware.
- Broad APT4 Series Coverage — Fits APT4S Pump with Skid, APT4T Pump with Electric Brake, APT4T Pump with Surge Brake, and all corresponding cold weather variants under a single part number.
- Exhaust Integrity Restored — A worn or cracked muffler allows uncontrolled exhaust discharge and excessive engine noise; replacing it with 5200020996 brings exhaust backpressure and sound levels back to spec.
- Exhaust Safety Compliance — A properly sealed muffler keeps hot exhaust gases directed away from the operator and fuel system components, which is critical when the pump is running in tight or enclosed jobsite conditions.
The muffler is the final stage of the engine's exhaust system. It channels hot combustion gases away from the engine and uses internal baffling to reduce the pressure pulses that cause exhaust noise. On a trash pump like the APT4S and APT4T, the engine runs hard under continuous load, and the muffler is exposed to sustained heat and vibration. When it cracks or corrodes, exhaust escapes in uncontrolled directions, engine backpressure changes, and noise levels climb — all signs it needs immediate replacement to keep the pump running cleanly and safely.
Part Details
| Part Number | 5200020996 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Muffler |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| 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.
