Wacker Neuson 5100075515 Pinion Gear

The Wacker Neuson Pinion Gear is a genuine OEM component designed for PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) series diaphragm pumps. As a direct OEM part, it is manufactured to the same specification as the original, ensuring a correct fit with no guesswork on compatibility. This pinion gear is the right choice when you need a verified, like-for-like replacement to restore your pump to full working order. Confirm your model number against the fitment list before ordering to ensure you receive the right part.

Key Features

• Genuine OEM Gear Geometry — Manufactured to the exact tooth profile and hardness spec of the original, ensuring smooth mesh and full load transfer within the gear train.
• Drop-In Drive Train Fit — Engineered to the same dimensions as the factory part, so it seats and engages correctly within the pump's drive assembly without modification.
• Broad Pump Series Coverage — Fits PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) Wacker Neuson diaphragm pump models, covering both standard and internal pump variants.
• Sustained Drive Efficiency — A correctly functioning pinion gear maintains consistent torque transfer to the pump mechanism; a worn or chipped gear causes erratic pumping output and accelerated wear on mating components.
• Sourced Direct from Wacker Neuson — Part number 5100075515 is an authorized Wacker Neuson OEM part, giving you full confidence in traceability and material quality.

The pinion gear is a small but critical part of the pump's drive train. It meshes with a larger drive gear to transmit rotational force from the engine or motor to the pump mechanism, converting power into the reciprocating action that moves fluid through the diaphragm. When a pinion gear wears down or its teeth become damaged, the drive train loses efficiency — leading to reduced pump output, increased vibration, and eventual failure of surrounding gear components. Replacing it promptly with a correctly specified part keeps the pump operating at its rated capacity.

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.