The Wacker Neuson Governor Spring is a genuine OEM component designed for MDP3 trash pumps and MPU 29 reversible plate compactors. As a direct OEM replacement, this spring is manufactured to the exact tension specification required to keep the governor mechanism operating within its intended range — no guesswork, no substitution. Wacker Neuson OEM parts are sourced through authorized supply channels, ensuring the matches the original part in every critical dimension. Confirmed fitment covers MDP3 and MPU 29 series equipment across multiple configurations.
Key Features
- Correct Spring Tension for Governor Control — Engineered to the precise load rating the governor assembly requires, so engine speed response stays accurate across operating conditions.
- Genuine Wacker Neuson OEM Part — Sourced directly through Wacker Neuson's authorized parts network, carrying the same part number (5000405143) as the factory-installed component.
- Drop-In Installation — Dimensioned to seat and hook into the existing governor linkage without modification, making replacement straightforward for any qualified technician.
- Broad Series Coverage — Fits multiple MDP3 trash pump configurations and MPU 29 reversible plate compactor variants, consolidating fitment across two machine families under one part number.
- Protects Against Over-Speed and Under-Speed Conditions — A worn or broken governor spring allows the engine to hunt, surge, or exceed its safe RPM range; replacing it restores stable, controlled operation.
The governor spring is a critical tension component within the mechanical governor assembly that regulates engine speed. It works against centrifugal force generated by the spinning governor weights, and the balance between the two determines how much fuel the engine receives at any given load — keeping RPM steady whether the machine is under light or heavy demand. When the spring loses tension, stretches, or breaks, the engine can surge erratically, fail to hold a set speed, or run at an unsafe RPM, which directly impacts the output and safe operation of the pump or compactor it powers.
Part Details
| Part Number | 5000405143 |
|---|---|
| Old Part Number | 0405143 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Trash Pumps | MDP3 | 5000630140, 5000630144, 5000630176, 5000630177 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
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.
