Wacker Neuson 5000209796 Piston 0.25mm

The Wacker Neuson Piston 0.25mm is a genuine OEM component designed for the VP1135A, VP1135AW, WP1235A, WP1235Aw, AP1135A, and CT24-4A series vibratory plates and walk-behind trowels. Sourced directly from Wacker Neuson, this oversized piston carries a 0.25mm oversize designation, making it the correct service replacement when cylinder bore has been reconditioned to the matching oversize specification. Verified fitment spans the full VP1135A, WP1235A, and CT24-4A model families, so you can order with confidence knowing part number is the right fit for your machine.

Key Features

• OEM-Spec Piston Geometry — Cast and machined to Wacker Neuson's exact 0.25mm oversize dimension, ensuring correct compression ratio and cylinder wall clearance after a bore recondition.
• Direct Service Replacement — Drops into the reconditioned cylinder bore of compatible engines; pairs with the corresponding oversize rings and is engineered to seat properly without additional machining.
• Broad Model Compatibility — Fits VP1135A, VP1135AW, WP1235A, WP1235Aw, AP1135A, and CT24-4A series vibratory plates and trowels, covering a wide range of Wacker Neuson compaction and finishing equipment.
• Restored Engine Compression — A correctly sized piston seals the combustion chamber properly, restoring power output and preventing the misfires, oil burning, and rough running caused by a worn or undersized piston.
• Genuine Wacker Neuson Part — Supplied as an authorized OEM component under part number 5000209796, eliminating guesswork on material grade, ring-groove dimensions, and pin bore sizing.

The piston is the reciprocating heart of a small engine — it compresses the air-fuel mixture, transfers combustion force to the crankshaft through the connecting rod, and helps seal combustion gases away from the crankcase. Over time, normal wear or damage can increase the clearance between the piston and cylinder wall, causing lost compression, reduced power, increased oil consumption, and hard starting. An oversize piston like the 5000209796 is used during an engine rebuild when the cylinder bore has been honed or bored out to the 0.25mm oversize dimension, restoring the tight fit needed for full engine performance and service life.

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.