The Bomag 05741321 Piston Ring Set is a genuine OEM component designed for Bomag tandem rollers across the BW 100, BW 115, BW 120, BW 125, and BW 131 series. As a direct OEM replacement, this piston ring set is manufactured to the same specifications as the original, ensuring a correct fit and proper engine function across compatible machines including the BW 100 AD-4, BW 120 AD-5, BW 125 AC-4, BW 131 ACW-5, and BW 120 AD-5 CC, among others. Sourced directly through authorized Bomag supply channels, this set delivers the consistency and confidence that engine rebuilds demand. When it's time to restore compression and performance, this piston ring set is the right part for the job.
Key Features
- Genuine OEM Engine Specification — manufactured to the exact ring profile, tension, and material grade as the original, ensuring correct compression sealing and oil control for Bomag tandem roller engines
- Drop-In Engine Replacement — engineered to seat correctly in the original cylinder bore without alteration, supporting a straightforward piston overhaul or engine rebuild
- Broad Tandem Roller Coverage — fits a wide range of Bomag tandem rollers including the BW 100 AD-4, BW 100 AC-5, BW 120 AD-5, BW 120 SL-5, BW 125 AD-4, BW 131 ACW-5, and BW 120 AD-5 CC
- Restores Engine Compression — worn or broken piston rings lead to lost compression, increased oil consumption, and reduced roller output power; this set brings the engine back to proper operating condition
- Verified Part Number Fit — order with confidence using Bomag part number 05741321, cross-referenced to the correct fitment across all listed BW-series tandem roller variants
Piston rings form the dynamic seal between the piston and cylinder wall inside a combustion engine. They serve two critical functions: maintaining compression in the combustion chamber so the engine generates full power, and controlling oil by preventing excess lubricant from entering the combustion zone. When piston rings wear, crack, or lose tension, an engine will typically exhibit symptoms such as blue exhaust smoke, increased oil consumption, hard starting, and a noticeable drop in power output. Replacing the piston ring set during an engine overhaul restores the cylinder seal, returns the engine to proper compression, and extends the service life of the rebuilt assembly.
Part Details
| Part Number | 05741321 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston Ring Set |
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 |
| Tandem Roller | BW 120 AD-5 CC | 00826793 |
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.
