The Bomag 05741888 Governor Spring is a genuine OEM component designed for Bomag BW 100, BW 120, BW 125, and BW 131 series tandem rollers. As a direct OEM replacement, this governor spring delivers the exact tension characteristics required to maintain consistent engine speed regulation on your machine. It is confirmed to fit the BW 100 AD-4, BW 100 AC-4, BW 120 AD-4, BW 120 AC-4, BW 125 AD-4, BW 125 AC-4, BW 100 AD-5, BW 100 AC-5, BW 120 AD-5, BW 120 AC-5, BW 120 AD-4, BW131 AD-5, and additional variants across the BW 100, BW 120, BW 125, and BW 131 tandem roller families. Sourcing the correct OEM governor spring — part number 05741888 — ensures your engine management system operates within its designed parameters, keeping your compaction output on spec.
Key Features
- OEM Spring Tension Accuracy — manufactured to the exact load rating specified by Bomag, ensuring the governor responds correctly across the full engine RPM range
- Drop-In Replacement — matches the original mounting points and spring geometry for a direct swap with no adaptation needed on covered tandem roller models
- Broad Tandem Roller Coverage — fits BW 100 AD-4, BW 100 AC-4, BW 120 AD-4, BW 120 AC-4, BW 125 AD-4, BW 125 AC-4, BW 100 AD-5, BW 100 AC-5, BW 120 AD-5, BW 120 AC-5, BW 131 AD-5, and more
- Consistent Engine Speed Control — a correctly tensioned governor spring holds engine RPM steady under varying compaction loads, protecting asphalt pass quality and drum speed consistency
- Genuine Bomag OEM Part — sourced directly from Bomag, carrying the same part number 05741888 as the original factory component for verified interchangeability
The governor spring is a critical component within the engine's mechanical governor assembly, responsible for applying a calibrated resistive force against the flyweights that regulate fuel delivery and engine speed. When the spring tension is correct, the governor maintains a stable idle and working RPM regardless of load fluctuations — essential for uniform drum speed and consistent mat density on tandem roller compaction passes. A fatigued or broken governor spring causes erratic engine speed, hunting at idle, or an inability to hold the set RPM under load, all of which directly compromise compaction performance and can accelerate wear on related engine components.
Part Details
| Part Number | 05741888 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Governor Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 100 AD-4 | 00818465, 00824271, 00824273 |
| Tandem Roller | BW 100 AC-4 | 00818467, 00818731 |
| Tandem Roller | BW 120 AD-4 | 00818469, 00818477, 00818593, 00818733, 00824173 |
| Tandem Roller | BW 120 AC-4 | 00818471, 00818597 |
| Tandem Roller | BW 125 AD-4 | 00818473 |
| Tandem Roller | BW 125 AC-4 | 00818475 |
| Tandem Roller | BW120AD 4 | 00818595, 00818871 |
| Tandem Roller | BW 100 AD-5 | 00824029, 00824561, 00824833, 00824995, 00825357, 00825643, 00826215 |
| Tandem Roller | BW 120 AC-5 | 00824031, 00824839, 00825363 |
| Tandem Roller | BW 120 AD-5 | 00824033, 00824563, 00824835, 00824997, 00825359, 00825645, 00826217 |
| Tandem Roller | BW 100 AC-5 | 00824275, 00824837, 00825361 |
| Tandem Roller | BW 131 AD-5 | 00824935 |
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.
