Wacker Neuson 5000152641 Piston Assembly .020 O.S.

The Wacker Neuson is a genuine OEM Piston Assembly.020 O.S. designed for the PT3V 75mm/3in Centrifugal Trash Pump series. As a factory-sourced component, the is manufactured to the same specifications as the original part, ensuring a direct, correct-fit replacement in PT3V pump engines. This oversized piston assembly is sized at.020 inches over standard, making it the appropriate replacement when the engine cylinder bore has been honed or reconditioned to that corresponding oversize. Choosing the correct oversize piston is critical to restoring proper compression and engine performance in your PT3V trash pump.

Key Features

• Genuine OEM Specification: — Machined to exact bore tolerances for the PT3V engine, ensuring consistent compression rings seating and proper piston-to-wall clearance.
• .020 Over Standard Sizing: — Correctly sized for PT3V engines reconditioned with a .020 O.S. bore hone — match this part to your cylinder measurement before ordering.
• PT3V Series Fitment: — Confirmed for PT3V 75mm/3in Centrifugal Trash Pump applications; verify your machine number against 5000009102 and 5000009241.
• Compression Restoration: — A worn or out-of-spec piston causes loss of compression, hard starting, and reduced pump output; this assembly restores engine power and drive performance.
• Complete Piston Assembly: — Supplied as a full assembly, simplifying the rebuild process and reducing the need to source individual piston components separately.

The piston is the reciprocating component inside the engine cylinder that compresses the air-fuel mixture and transfers combustion force to the crankshaft via the connecting rod. In a trash pump engine like the PT3V, a healthy piston maintains the cylinder pressure needed to keep the engine running at full power and drive the pump impeller effectively. When a piston wears beyond tolerance — or after a cylinder bore has been reconditioned — an oversized replacement piston like the 5000152641 in .020 O.S. is required to restore the correct clearance, compression, and overall engine output.

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.

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