The Bomag 05740125 Piston Ring is a genuine OEM component designed for Bomag tandem rollers, including the BW 80 AD-2, BW 90 AD-2, BW 100 ADM-2, BW 80 ADS, and BW 90 AC-2. Sourced directly from Bomag, this piston ring matches the original specification of your engine, ensuring a drop-in fit with no guesswork. If your tandem roller is burning oil, losing compression, or showing signs of engine wear, replacing this ring with the correct OEM part restores proper cylinder sealing and engine performance.
Key Features
- OEM Compression and Oil Control Spec — manufactured to Bomag's exact ring tension, profile, and material grade, ensuring proper gas sealing and oil film management within the cylinder bore
- Direct Engine Replacement — engineered to the original piston and cylinder dimensions, this piston ring seats correctly without machining or shimming
- Broad Tandem Roller Coverage — fits BW 80 AD-2, BW 90 AD-2, BW 100 ADM-2, BW 80 ADS, and BW 90 AC-2 tandem rollers, covering multiple variants across the Bomag compact tandem lineup
- Restores Engine Compression — a worn or broken piston ring leads to blow-by, increased oil consumption, and loss of power; a fresh OEM ring brings cylinder pressure back to specification and keeps the engine running at full output
- Genuine Bomag Part — backed by Bomag's OEM supply chain, part number 05740125 is the same component installed at the factory, not a reverse-engineered substitute
A piston ring seals the gap between the piston and the cylinder wall, performing two critical jobs: holding combustion pressure above the piston so the engine generates power, and scraping excess oil back down the cylinder wall to prevent burning. When a piston ring wears, cracks, or loses tension, combustion gases escape past the piston — a condition known as blow-by — which robs the engine of power, increases fuel consumption, and causes oil to burn off in the exhaust. Replacing a faulty piston ring at the first sign of compression loss or oil consumption is one of the most effective ways to protect the engine internals of your Bomag tandem roller from compounding wear.
Part Details
| Part Number | 05740125 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 80 AD-2 | 00810280, 00817566 |
| Tandem Roller | BW 90 AD-2 | 00810281, 00817569, 00818041, 00818507 |
| Tandem Roller | BW 100 ADM-2 | 00817459 |
| Tandem Roller | BW 80 ADS | 00817567, 00818513 |
| Tandem Roller | BW 90 AC-2 | 00817568, 00818045 |
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.
