The Wacker Neuson Governor Spring is a genuine OEM component designed for BS50-4As and BS60-4As vibratory rammers. Sourced directly from Wacker Neuson, this spring meets the exact design and material specifications of the original part, ensuring consistent engine speed regulation across the full range of compatible machines. It fits multiple BS50-4As and BS60-4As configurations, including standard, high-altitude, and hour-meter-equipped variants, making it a straightforward service replacement for the most common rammer models in the lineup.
Key Features
- OEM Spring Rate Accuracy — Manufactured to the original tension and deflection spec, so the governor responds to throttle demand the same way it did from day one.
- Drop-In Service Replacement — Hooks and seats to the original anchor points without modification, streamlining the swap during routine engine maintenance.
- Broad BS-Series Fitment — Confirmed for BS50-4As and BS60-4As vibratory rammers, covering standard, high-altitude, and hour-meter-equipped variants.
- Steady Engine Speed Under Load — A correctly tensioned governor spring keeps the engine operating at the set RPM through compaction strokes; a worn or broken spring causes surging, hunting, or loss of compaction force.
- Fuel System Compliance — Proper governor spring tension is essential for maintaining the correct fuel-air balance; an out-of-spec spring can cause over-fueling and elevated emissions, making this a relevant replacement for emissions-compliant operation.
The governor spring is a small but critical component in the engine's mechanical governor assembly. It works against the centrifugal force generated by the rotating flyweights, and the balance between these two forces is what holds engine speed steady at the operator-set throttle position. When the spring loses tension or breaks, the governor loses its ability to regulate RPM accurately — the engine may surge, hunt at idle, or fail to hold consistent speed under the load of compaction work, all of which directly reduce tamping performance and can accelerate wear on other engine components.
Part Details
| Part Number | 5200015321 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BS60-4As Vibratory Rammer, 11" Plastic Shoe | BS60-4As | 5200014910, 5200018232, 5200018231, 5200018233 |
| BS50-4As 11IN | BS50-4As | 5200018219, 5200018226, 5100025357 |
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.
