The Bomag 05741314 Piston is a genuine OEM piston designed for Bomag BW 100, BW 120, BW 125, BW 115, and BW 131 series tandem rollers. As a factory-sourced component, this piston meets the exact engineering specifications Bomag set for these machines, ensuring full compatibility and lasting performance. This part fits a wide range of tandem roller variants including 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 120 SL-5, BW 100 SL-5, BW 115 AC-5, BW 131 ACW-5, BW 100 AC-5, BW 120 AC-5, BW 100 AD-5, BW 120 AD-5, BW 120 SLC-5, and BW 120SL-5. When engine internals need attention, installing a genuine OEM replacement like this piston is the surest way to restore your compaction equipment to full operating condition.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to Bomag's original bore diameter and compression-height specifications, so this piston delivers the correct compression ratio and ring-land geometry the engine was built around.
- Drop-In Engine Replacement — Engineered to the same tolerances as the original, this piston installs directly into the engine block without modification to mating components.
- Broad Tandem Roller Coverage — Compatible with a wide range of Bomag tandem rollers including the BW 100 AD-4, BW 120 AD-4, BW 125 AD-4, BW 120 SL-5, BW 115 AC-5, BW 131 ACW-5, BW 120 AD-5, and BW 120 SLC-5, among others.
- Restored Engine Compression — A worn or damaged piston causes loss of compression, rough running, excessive oil consumption, and reduced drive power to the drums. Replacing it restores full combustion efficiency and smooth roller operation.
- Long-Term Internal Engine Protection — Correct piston fit prevents blow-by, maintains proper oil film on the cylinder wall, and reduces thermal stress — extending the service life of surrounding engine components.
The piston is a core reciprocating component inside the engine, moving up and down within the cylinder bore to compress the air-fuel mixture and transfer combustion force to the crankshaft via the connecting rod. Its fit within the bore is critical — even minor wear or damage disrupts compression, increases fuel consumption, and can allow combustion gases to contaminate the engine oil. On a tandem roller, where consistent hydraulic drive power depends directly on engine output, a failing piston leads to noticeable performance loss across both drums and can cause the machine to fall short of required compaction passes on asphalt work.
Part Details
| Part Number | 05741314 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 100 AD-4 | 00817685 |
| Tandem Roller | BW 100 AC-4 | 00817687 |
| Tandem Roller | BW 120 AD-4 | 00817689, 00818377 |
| Tandem Roller | BW 120 AC-4 | 00817691 |
| Tandem Roller | BW 125 AD-4 | 00817937 |
| Tandem Roller | BW 125 AC-4 | 00818271 |
| Tandem Roller | BW 120 SL-5 | 00824537, 00824559 |
| Tandem Roller | BW 100 SL-5 | 00824557, 00826553 |
| Tandem Roller | BW 115 AC-5 | 00824933 |
| Tandem Roller | BW 131 ACW-5 | 00824937 |
| Tandem Roller | BW 100 AC-5 | 00826091 |
| Tandem Roller | BW 120 AC-5 | 00826093 |
| Tandem Roller | BW 100 AD-5 | 00826219 |
| Tandem Roller | BW 120 AD-5 | 00826221 |
| Tandem Roller | BW 120 SLC-5 | 00826435 |
| Tandem Roller | BW 120SL-5 | 00826609 |
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.
