Wacker Neuson 5000400020 Engine Honda GX120UT1SWX2

The Wacker Neuson Engine Honda GX120UT1SWX2 is a genuine OEM power unit designed for the VP1135A, VP1135AW, WP1235A, WP1235AW, and AP1135A series single-direction vibratory plates. Sourced directly from Wacker Neuson, this OEM engine assembly ensures the correct output characteristics, mounting configuration, and operational compatibility required by these compaction machines. Confirmed fitment spans the full VP1135A and WP1235A plate families, making the correct choice when replacing a failed or worn-out engine on these models.

Key Features

• Genuine OEM Power Output: — Honda GX120UT1SWX2 specification is factory-matched to the drive and centrifugal force requirements of Wacker Neuson single-direction vibratory plates — no output mismatch or compaction loss.
• Direct-Mount Replacement: — OEM-matched bolt pattern, shaft dimensions, and mounting points align to the VP1135A and WP1235A plate frames for a straight-swap installation.
• Broad Vibratory Plate Compatibility: — Fits VP1135A, VP1135AW, WP1235A, WP1235AW, WP1235AW-L, WP1235AW-LL, and AP1135A series compaction plates.
• Sustained Compaction Performance: — A correctly functioning engine maintains consistent plate frequency and centrifugal force; a failed engine brings compaction work to a complete stop and risks project delays.
• Fuel System Safety Compliance: — As a genuine OEM assembly, the engine meets the original fuel system and emissions configuration specified for these machines, keeping the equipment operating within its intended safety parameters.

The engine is the primary power source for a vibratory plate compactor, converting fuel combustion into rotational output that drives the exciter unit and generates the compaction force needed to consolidate soil, gravel, or asphalt. Without a properly functioning engine, the plate's eccentric weight assembly cannot spin, and the machine produces no compaction — making the engine one of the most critical components on the machine. A worn or seized engine results in complete loss of function, and replacing it with the correct OEM unit ensures the drive coupling, throttle linkage, and recoil system all mate as originally designed.

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.