The Bomag 05719851 Oil Pressure Switch is a genuine OEM component designed for a broad range of Bomag single drum rollers and tandem rollers, including BW 172 D-2, BW 177 D-4, BW 161 AD-4, BW 151 AD-4, BW 145 D-3, BW 124 DH-4, BW 138 AD, BW 135 AD, BW 100 AD-3, BW 120 AD-3, and many additional BW-series models, as well as C 815 C and C 825 C single drum rollers. Sourced directly from Bomag, this switch matches the original electrical specification and connector configuration, so it installs without modification into the engine monitoring circuit. Confirming compatibility against part number 05719851 before ordering ensures this switch is the correct fit for your specific machine variant and generation.
Key Features
- Genuine OEM Electrical Accuracy — manufactured to Bomag's original switching pressure threshold and output specification, so the engine monitoring circuit responds correctly to actual oil pressure conditions rather than a mismatched aftermarket signal.
- Direct Drop-In Replacement — matches the original thread pitch, body dimensions, and connector type, allowing the switch to seat and wire into the engine block port exactly as the factory unit did.
- Wide BW-Series Coverage — confirmed fitment across Bomag single drum rollers including BW 172 D-2, BW 177 D-4, BW 145 D-3, and BW 124 DH-4, and tandem rollers including BW 161 AD-4, BW 151 AD-4, BW 138 AD, BW 120 AD-3, BW 100 AD-3, and BW 135 AD, among others, plus C 815 C and C 825 C models.
- Engine Protection You Can Count On — a correctly functioning oil pressure switch triggers the warning system the moment pressure drops below the safe threshold, protecting the engine from oil starvation damage before it becomes a major repair.
- Critical Safety Function — an oil pressure switch is part of the engine's primary protection circuit; using a genuine OEM unit ensures the switch activates at the correct pressure point, guarding against undetected low-oil conditions that can cause catastrophic engine failure.
The oil pressure switch monitors engine oil pressure in real time and sends an electrical signal to the instrument panel or engine control system when pressure falls outside the safe operating range. On Bomag rollers, this signal triggers a warning light or initiates an automatic engine shutdown, preventing internal engine damage caused by oil starvation. A faulty or incorrect switch can either fail to warn the operator during a genuine pressure drop or generate false alarms that interrupt productive compaction work — making accurate specification critical.
Part Details
| Part Number | 05719851 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Oil Pressure Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 172 D-2 | 00810074 |
| Single Drum Roller | BW 142 D-2 | 00810077 |
| Tandem Roller | BW 138 AD | 00810105, 00810191, 00817473, 00818359 |
| Tandem Roller | BW 135 AD | 00810120, 00817471, 00818357 |
| Tandem Roller | BW 100 AC-3 | 00817457 |
| Tandem Roller | BW 100 AD-3 | 00817458 |
| Tandem Roller | BW 120 AC-3 | 00817462 |
| Tandem Roller | BW 120 AD-3 | 00817463, 00817831, 00817833 |
| Single Drum Roller | BW 124 DH-3 | 00817464, 00817634 |
| Single Drum Roller | BW 124 PDH-3 | 00817465 |
| Tandem Roller | BW 125 ACH | 00817466 |
| Tandem Roller | BW 125 ADH | 00817467 |
| Tandem Roller | BW 135 AC | 00817470 |
| Tandem Roller | BW 138 AC | 00817472, 00818361 |
| Tandem Roller | BW 141 AD-2 | 00817474 |
| Tandem Roller | BW 144 AD-2 | 00817477, 00817478 |
| Single Drum Roller | BW 145 D-3 | 00817479, 00817637 |
| Single Drum Roller | BW 145 DH-3 | 00817481, 00817638 |
| Single Drum Roller | BW 145 PDH-3 | 00817483, 00817639 |
| Tandem Roller | BW 151 AC-2 | 00817485 |
| Tandem Roller | BW 151 AD-2 | 00817486 |
| Tandem Roller | BW 154 AD-2 | 00817490, 00817491, 00817599 |
| Tandem Roller | BW 161 AC-2 | 00817492 |
| Tandem Roller | BW 161 AD-2 | 00817493, 00817494 |
| Tandem Roller | BW 164 AC-2 | 00817495 |
| Tandem Roller | BW 202 AD-2 | 00817516, 00817517 |
| Tandem Roller | BW 202 AHD-2 | 00817518 |
| Tandem Roller | BW120AD 3 | 00817571 |
| Tandem Roller | BW 138-AD | 00817572, 00818389 |
| Tandem Roller | BW141AD 2 | 00817573 |
| Single Drum Roller | BW124PDH 3 | 00817574, 00818025 |
| Single Drum Roller | C 815 C | 00817575 |
| Single Drum Roller | BW145D 3 | 00817576, 00817927 |
| Single Drum Roller | BW145PDH 3 | 00817577 |
| Single Drum Roller | C 825 C | 00817578 |
| Tandem Roller | BW 164 AD-2 | 00817640 |
| Tandem Roller | BW 141 AD-4 | 00817697, 00818561, 00818955, 00818999 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| Tandem Roller | BW151AD 4 | 00817843 |
| Tandem Roller | BW120 AD-3 | 00817849 |
| Tandem Roller | BW 154 AD-4 | 00817901, 00818557 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555, 00824017 |
| Tandem Roller | BW 141 AD-4 AM | 00817925, 00818553 |
| Single Drum Roller | BW 145-DH-3 | 00817929 |
| Tandem Roller | BW 151 AC-4 AM | 00817953, 00818559, 00824025 |
| Walk-Behind / Light Roller | BW 6 | 00817955, 00818665 |
| Walk-Behind / Light Roller | BW 6 S | 00817957, 00818683 |
| Single Drum Roller | BW 124 DH-4 | 00818295, 00824495, 00824709 |
| Single Drum Roller | BW 124 PDH | 00818297 |
| Single Drum Roller | BW124DH 4 | 00818311 |
| Single Drum Roller | BW145DH 40 | 00818323, 00818939, 00818941 |
| Single Drum Roller | BW 145 DH 40 BW 145 DH 4 | 00818325 |
| Single Drum Roller | BW 145 PDH 40 BW145 PDH 4 | 00818327 |
| Single Drum Roller | BW 177 D-4 | 00818451 |
| Single Drum Roller | BW 177 DHC-4 | 00818455 |
| Tandem Roller | BW 161 AD-4 | 00818481, 00818959, 00824003, 00824735 |
| Single Drum Roller | BW 124 DH-40 | 00818521, 00824499 |
| Single Drum Roller | BW 124 PDH-40 | 00818523, 00824497 |
| Single Drum Roller | BW 177 PDHC-4 | 00818539 |
| Single Drum Roller | BW 179 DHC-4 | 00818547 |
| Tandem Roller | BW 151 AD-4 | 00818563, 00818957, 00824001 |
| Tandem Roller | BW 151 AC-4 | 00818565, 00819699, 00824011 |
| Single Drum Roller | C815D | 00818569 |
| Single Drum Roller | BW124PDH-40 | 00818571 |
| Tandem Roller | BW 161 AC-4 | 00818589, 00818967 |
| Single Drum Roller | BW145D 40 | 00818935, 00818937 |
| Single Drum Roller | BW145PDH 40 | 00818943 |
| Tandem Roller | BW 161 ADO-4 | 00824333, 00824335 |
| Tandem Roller | BW 161 AD-4 EU-Flex | 00824393 |
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.
