The Bomag 05715485 Governor Spring is a genuine OEM replacement designed for Bomag BW 650 T, BW 850 T, BW 850 TR, BW 1050 T, and BW 85 T trench compactors. Sourced directly from Bomag, this governor spring matches the original component in every specification, ensuring correct engine speed response and throttle control. If your trench compactor is surging, hunting at idle, or failing to hold steady RPM under load, a worn or fatigued governor spring is a common cause — and this OEM part is the correct fix.
Key Features
- Genuine OEM Tension Specification — manufactured to Bomag's exact spring rate, ensuring the governor responds accurately across the full throttle range without over- or under-correction
- Drop-In Replacement — engineered to the same dimensional profile as the original, fitting the governor assembly without alteration or adapting of hardware
- Broad BW T-Series Coverage — confirmed fit for BW 85 T, BW 650 T, BW 850 T, BW 850 TR, and BW 1050 T trench compactors, covering multiple compaction force classes in the BW T lineup
- Steady Engine Speed Under Load — a correctly tensioned governor spring keeps engine RPM stable when the compactor transitions between light and heavy compaction passes, protecting output and fuel efficiency
- Long-Term Spring Integrity — genuine Bomag metallurgy resists fatigue and set over time, so the spring maintains its calibrated tension through demanding trench compaction cycles
The governor spring is a critical component in the engine's mechanical governor assembly, controlling how the throttle responds to changes in engine load. It works by applying a calibrated tension against the flyweights in the governor mechanism — when the engine bogs under load, the spring pulls the throttle open to restore RPM, and when the load drops, it helps return the throttle to the set position. When a governor spring stretches, fatigues, or breaks, the engine loses the ability to regulate its own speed, resulting in hunting, surging, stalling under load, or runaway RPM — all of which compromise compaction performance and can accelerate engine wear on BW T-series trench compactors.
Part Details
| Part Number | 05715485 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Trench Compactor | BW 1050 T | 00815203, 00811653 |
| Trench Compactor | BW 650 T | 00815202 |
| Trench Compactor | BW 850 T | 00811652 |
| Trench Compactor | BW 850 TR | 00815210 |
| Trench Compactor | BW 85 T | 00815204 |
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.
