The Bomag 05971050 Tachometer Sending Unit is a genuine OEM component designed for Bomag BW-series tandem rollers, including the BW 141 AD-2, BW 144 AD-2, BW 151 AC-2, BW 151 AD-2, BW 154 AD-2, BW 161 AC-2, BW 161 AD-2, BW 170 AD, BW 174 AC, BW 174 AC AM, BW 174 AD, BW 174 AD AM, BW 180 AD, BW 184 AD, BW 202 AD-2, and BW 202 AHD-2 tandem rollers. Sourced directly from Bomag, this sending unit matches the original component's output specifications, connector configuration, and mounting dimensions for a straight-swap installation. Keeping an accurate, functioning tachometer signal is critical to engine diagnostics and operator awareness on the job, and this OEM part ensures the signal integrity your machine's instrumentation depends on.
Key Features
- OEM Signal Accuracy — manufactured to Bomag's original output specification, delivering the precise RPM signal the instrument cluster requires for correct tachometer readings
- Direct-Swap Installation — matches the original connector type, thread pitch, and mounting profile so this sending unit seats and connects exactly as the factory component did
- Broad BW-Series Tandem Roller Coverage — confirmed fitment across the BW 141 AD-2, BW 174 AD, BW 202 AD-2, BW 202 AHD-2, and the full BW 151, BW 154, BW 161, BW 170, BW 174, BW 180, and BW 184 tandem roller variants listed in Bomag's catalog
- Restored Instrumentation Performance — a failed or drifting sending unit causes erratic or dead tachometer readings, masking over-rev conditions and complicating engine diagnostics; this replacement restores accurate, stable RPM monitoring
- Genuine Bomag OEM Quality — backed by Bomag's manufacturing standards, this part is built with the same materials and tolerances as the unit it replaces, supporting the long service life your roller demands
The tachometer sending unit monitors engine crankshaft or flywheel rotation speed and converts it into an electrical signal that feeds the cab's tachometer display. This signal lets the operator and service technician confirm the engine is running within its correct RPM range during compaction work. When the sending unit fails or degrades, the tachometer may read zero, fluctuate erratically, or display inaccurate RPM — making it difficult to detect lugging, over-revving, or engine irregularities before they cause broader mechanical issues.
Part Details
| Part Number | 05971050 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Tachometer Sending Unit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 184 AD | 00810713, 00817514 |
| Tandem Roller | BW 141 AD-2 | 00817474 |
| Tandem Roller | BW 144 AD-2 | 00817478 |
| Tandem Roller | BW 151 AC-2 | 00817485 |
| Tandem Roller | BW 151 AD-2 | 00817486 |
| Tandem Roller | BW 154 AD-2 | 00817490, 00817491 |
| Tandem Roller | BW 161 AC-2 | 00817492 |
| Tandem Roller | BW 161 AD-2 | 00817493, 00817494 |
| Tandem Roller | BW 170 AD | 00817498 |
| Tandem Roller | BW 174 AC | 00817499 |
| Tandem Roller | BW 174 AC AM | 00817500 |
| Tandem Roller | BW 174 AD | 00817501 |
| Tandem Roller | BW 174 AD AM | 00817502 |
| Tandem Roller | BW 180 AD | 00817513 |
| Tandem Roller | BW 202 AD-2 | 00817516, 00817517 |
| Tandem Roller | BW 202 AHD-2 | 00817518 |
| Tandem Roller | BW141AD 2 | 00817573 |
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.
