Wacker Neuson 5000406772 Head Subassembly Cylinder

The Wacker Neuson Head Subassembly Cylinder is a genuine OEM component designed for MDP3 trash pumps and MPU 29 reversible plate compactors. As a direct factory replacement, this assembly ships with the exact tolerances and materials specified for these machines, ensuring a correct fit with no guesswork at installation. Sourced directly through Wacker Neuson's parts network, the is the same assembly built into these units at the factory.

Key Features

• OEM Cylinder Sealing Integrity — Manufactured to Wacker Neuson's compression and dimensional specifications, so combustion sealing performance matches the original build.
• Drop-In Assembly Replacement — Supplied as a complete head subassembly, reducing bench time during a top-end rebuild — bolt it in place of the original without reworking mating surfaces.
• Broad MDP3 and MPU 29 Coverage — Confirmed fitment across multiple MDP3 trash pump configurations and MPU 29 reversible plate variants, making it a single stock part for mixed fleets.
• Sustained Engine Output — A sound cylinder head assembly maintains correct compression, supporting full power delivery and consistent engine operation across the duty cycle of pumps and plate compactors.
• Fuel System and Combustion Safety — A failed or cracked cylinder head can allow fuel vapors and combustion gases to escape; replacing with a genuine OEM assembly restores the sealed combustion environment required for safe operation.

The cylinder head subassembly forms the top of the engine's combustion chamber, sealing in the air-fuel mixture and directing combustion forces down onto the piston. It houses or mates with critical components including valves, the spark plug, and head gasket surfaces, all of which depend on the head maintaining its shape and seal under high thermal and mechanical stress. When this assembly cracks, warps, or develops a failed sealing surface, compression drops, the engine loses power, overheats, or fails to start — making timely replacement essential to keeping the machine operational.

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.