The Bomag 05902373 Piston is a genuine OEM replacement built for Bomag cold milling machines and tandem rollers, including the BM 500/15, BM 600/15, BM 1200/30, and BM 1300/30 cold milling machines as well as the BW 141 AD-4, BW 141 AD-5, BW 151 AD-4, BW 151 AD-5, BW 151 AC-4, BW 151 AC-5, and BW 170 AD-2 AM tandem rollers. As a direct OEM part, this piston is produced to the same specifications as the original, ensuring a drop-in replacement with no guesswork on fit or compatibility. Sourced from Bomag's authorized supply chain, part number 05902373 is the correct service part for a wide range of BM-series and BW-series equipment across multiple generations. When it comes to engine and hydraulic system integrity, choosing the right piston the first time keeps your machine running at spec.
Key Features
- OEM-Grade Dimensional Accuracy — manufactured to the same bore diameter, ring groove tolerances, and crown profile as the original, ensuring correct compression and seal engagement in this application.
- Direct OEM Replacement — installs in place of the original component without modification, maintaining all original clearances and fitment geometry in the cylinder bore.
- Broad Fitment Coverage — compatible with BM 500/15, BM 600/15, BM 1200/30, BM 1300/30, and BM 1300/30-2 cold milling machines, as well as BW 141 AD-4, BW 141 AD-5, BW 151 AD-4, BW 151 AD-5, BW 151 AC-4, BW 151 AC-5, BW 151 AD-5 AM, BW 170 AD-2 AM, and BW 170 AP AM tandem rollers, including Tier 4 and Stage V variants.
- Engine Performance Restored — a correctly fitted piston maintains proper compression ratios, supports efficient combustion, and prevents blow-by that can contaminate engine oil and accelerate wear throughout the engine.
- Combustion Integrity Protection — worn or damaged pistons cause misfires, power loss, and excessive emissions; replacing with this genuine OEM piston restores combustion chamber sealing and keeps the engine operating within designed parameters.
The piston is a core reciprocating component inside the engine cylinder, transferring the force of combustion into rotational power via the connecting rod and crankshaft. It works in close tolerance with the cylinder bore and piston rings to seal combustion gases above while allowing lubrication below. When a piston becomes worn, cracked, or scored, compression drops, fuel efficiency suffers, and internal engine damage can follow quickly — making timely replacement critical to keeping the machine productive.
Part Details
| Part Number | 05902373 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Cold Milling Machine | BM1300/30 | 00800607 |
| Cold Milling Machine | BM1000/30-2 | 00800665 |
| Cold Milling Machine | BM1000 30-2 | 00800667 |
| Cold Milling Machine | BM1200 30-2 | 00800669, 00800671 |
| Cold Milling Machine | BM1300/30-2 | 00800673 |
| Cold Milling Machine | BM1300 30-2 | 00800675 |
| Tandem Roller | BW 141 AD-4 | 00817697, 00818561, 00818955, 00818999 |
| Tandem Roller | BW 170 AD-2 AM | 00817716 |
| Tandem Roller | BW151AD 4 | 00817843 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555, 00824017 |
| Tandem Roller | BW 141 AD-4 AM | 00817925, 00818553 |
| Cold Milling Machine | BM 600/15 | 00818099, 00818175 |
| Cold Milling Machine | BM 500/15 | 00818173, 00818873, 00824553 |
| Cold Milling Machine | BM1300/30-T3 | 00818425 |
| Cold Milling Machine | BM1200/30-T3 | 00818427 |
| Tandem Roller | BW 170 AP AM | 00818515 |
| Tandem Roller | BW 151 AD-4 | 00818563, 00818957, 00824001 |
| Tandem Roller | BW 151 AC-4 | 00818565, 00819699, 00824011 |
| Tandem Roller | BW 141 AD-5 | 00824049, 00825593 |
| Tandem Roller | BW 151 AD-5 | 00824051, 00825595 |
| Tandem Roller | BW 151 AD-5 AM | 00824055 |
| Tandem Roller | BW 151 AC-5 | 00824057 |
| Tandem Roller | BW 141 AD-50 | 00824059 |
| Tandem Roller | BW 151 AD-50 | 00824501, 00824567 |
| Tandem Roller | BW 151 AC-50 | 00824503 |
| Cold Milling Machine | BM 500/15 EU-Flex | 00824539 |
| Cold Milling Machine | BM 500 15 P8 | 00824743 |
| Cold Milling Machine | BM600 /15 | 00824745 |
| Cold Milling Machine | BM 600/15 EU-Flex | 00824943 |
| Cold Milling Machine | BM 1200/30 | 00824963 |
| Cold Milling Machine | BM 1300/30 | 00824965, 00825095 |
| Cold Milling Machine | BM 600/15 EU-Flex T4i | 00825065 |
| Cold Milling Machine | BM 500/15 Stage V | 00825885 |
| Cold Milling Machine | BM 600/15 Stage V | 00825887 |
| Cold Milling Machine | BM 500/15-2 | 00826459 |
| Cold Milling Machine | BM 600/15-2 | 00826479 |
| Tandem Roller | BW141AD 5 | 00827405 |
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.
