The Wacker Neuson 5200019920 is a genuine OEM Cylinder Head Gasket designed for the APT4S and APT4T self-priming pump series. This includes APT4S Pump w/Skid, APT4S Pump w/Skid Cold Weather, APT4T Pump Surge Brake, APT4T Pump Surge Brake Cold Weather, APT4T Pump Electric Brake, and APT4T Pump Electric Brake Cold Weather configurations. As a direct OEM part, the 5200019920 is manufactured to the same specification as the original component, ensuring a precise match to the engine's cylinder head interface. Sourcing the correct gasket by 5200019920 is essential — an improperly fitted head gasket can lead to compression loss, coolant intrusion, or engine damage that puts your pump out of service.
Key Features
- OEM Compression Sealing Integrity — Manufactured to the original torque and compression specification for the APT4S and APT4T engine, ensuring the head-to-block seal performs exactly as designed.
- Direct Head-to-Block Replacement — Matches the original bolt pattern, thickness, and bore dimensions of the factory gasket, dropping straight into place without rework or shimming.
- Broad APT4 Series Coverage — Compatible across the full APT4S and APT4T pump lineup, including standard, surge brake, electric brake, and cold weather variants.
- Protects Engine Longevity — A compromised head gasket allows combustion gases to escape or coolant to mix with oil; replacing it promptly with a genuine part restores full engine output and prevents cascading internal damage.
- Fuel and Combustion System Safety — A failed head gasket on a pump engine can create uncontrolled combustion leakage; using the correct OEM gasket maintains safe operating conditions in the field.
The cylinder head gasket forms the critical seal between the engine's cylinder head and the engine block. It must simultaneously contain combustion pressure, prevent coolant from entering the cylinder, and keep oil passages isolated from both. On a self-priming trash pump like the APT4S and APT4T series, where the engine operates under sustained load moving water and debris, a worn or blown head gasket quickly leads to lost compression, overheating, white or black exhaust smoke, and eventual engine failure. Replacing the gasket with a genuine OEM part restores the correct seal and protects the engine from further damage.
Part Details
| Part Number | 5200019920 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cylinder Head Gasket |
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.
