Wacker Neuson 5200020203 Injection Nozzle

The Wacker Neuson Injection Nozzle is a genuine OEM component designed for the APT4S and APT4T pump series, including cold weather and brake-equipped configurations. Sourced directly from Wacker Neuson, this injection nozzle meets the same specifications as the original part installed at the factory. Compatible across the full range of APT4S and APT4T variants — including surge brake, electric brake, and cold weather models — this is a straightforward drop-in replacement that restores proper fuel delivery without guesswork.

Key Features

• Genuine OEM Fuel Delivery Precision — Manufactured to Wacker Neuson's exact spray pattern and flow rate specifications, ensuring the engine receives the correct fuel charge for consistent ignition and combustion.
• Direct Fitment Across APT4S and APT4T Variants — Installs using the same mounting interface as the original nozzle, covering surge brake, electric brake, skid-mounted, and cold weather pump configurations.
• Broad Model Coverage — Fits APT4S (w/Skid), APT4T (Surge Brake and Electric Brake), and all corresponding cold weather pump models in the APT4S CW and APT4T CW series.
• Restored Engine Performance — A worn or clogged injection nozzle causes hard starting, rough running, and excessive fuel consumption; replacing it with the correct OEM part brings combustion efficiency back to spec.
• Fuel System Safety Compliance — Using the correct OEM-spec nozzle ensures fuel atomization and pressure ratings remain within the designed operating parameters, reducing the risk of fuel system irregularities under load.

The injection nozzle is responsible for atomizing diesel fuel and delivering it into the combustion chamber at the precise pressure, angle, and spray pattern required for clean ignition. When the nozzle wears or becomes fouled, fuel atomization deteriorates — leading to misfires, loss of power, increased fuel consumption, and difficult starting. Replacing a failed injection nozzle with a genuine OEM part like the Wacker Neuson 5200020203 restores the correct fuel delivery characteristics and protects the wider fuel system from the knock-on effects of poor combustion.

Part Details

Compatibility & Fitment

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.