The Bomag 05850342 Steering Cylinder is a genuine OEM replacement designed for Bomag BW 211, BW 177, BW 179, and BW 212 series single drum rollers. Sourced directly from Bomag, this cylinder delivers the exact hydraulic specifications required for proper articulated steering on these machines. Confirmed fitment spans a wide range of BW 211 variants — including the BW 211 D-4, BW 211 D-40, BW 211 DE-40, BW 211 PD-4, BW 211 PD-40, BW 211 PD-50, BW 211 D-50, and BW 211-40 — as well as the BW 177 DH-4, BW 179 DH-4, BW 179 PDH-4, and BW 212 D-40. Replacing a worn or leaking steering cylinder restores full hydraulic control and keeps your roller operating safely on grade.
Key Features
- Genuine OEM Hydraulic Precision — manufactured to Bomag's exact bore, stroke, and seal specifications for consistent hydraulic pressure and full steering response on single drum rollers
- Direct Bolt-In Replacement — matches the original mounting points and port connections on all covered BW 211, BW 177, BW 179, and BW 212 models for a straightforward swap
- Broad BW-Series Coverage — fits BW 211 D-4, BW 211 D-40, BW 211 DE-40, BW 211 PD-4, BW 211 PD-40, BW 211 PD-50, BW 211 D-50, BW 211 D-4i, BW 211 D-4 EU-Flex, BW 211-40, BW 177 DH-4, BW 179 DH-4, BW 179 PDH-4, and BW 212 D-40 single drum rollers
- Steering System Integrity — a fully functioning steering cylinder maintains precise directional control under load; a leaking or seized cylinder causes sluggish or unresponsive articulation, creating both productivity and safety risks
- Operator Safety — hydraulic steering failure on a large single drum roller is a serious operational hazard; replacing this component with a genuine OEM part ensures the steering circuit performs to the pressure and response tolerances the machine was built around
The steering cylinder is the hydraulic actuator responsible for articulating the front and rear frames of the roller relative to each other, giving the operator directional control of the machine. It extends and retracts in response to hydraulic pressure routed through the steering circuit, translating the operator's input into smooth, controlled turns. When the cylinder develops internal seal leaks or external damage, steering becomes imprecise or fails entirely — making prompt replacement critical to both safe operation and consistent compaction pass accuracy.
Part Details
| Part Number | 05850342 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Steering Cylinder |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 211 DE-40 | 00800913, 00818741 |
| Single Drum Roller | BW 211 D-40 | 00817941, 00818129, 00818391, 00824269 |
| Single Drum Roller | BW 211 PD-40 | 00818065, 00818319 |
| Single Drum Roller | BW 211 PD-4 | 00818329, 00824161, 00824391 |
| Single Drum Roller | BW211D 40 | 00818415 |
| Single Drum Roller | BW211PD 40 | 00818417 |
| Single Drum Roller | BW 177 DH-4 | 00818453, 00824133 |
| Single Drum Roller | BW 179 DH-4 | 00818545, 00824137 |
| Single Drum Roller | BW 212 D-40 | 00818823, 00824279 |
| Single Drum Roller | BW 211 D-50 | 00818869, 00824425, 00824701 |
| Single Drum Roller | BW 179 PDH-4 | 00824139 |
| Single Drum Roller | BW 211 D-4 | 00824159, 00824389 |
| Single Drum Roller | BW 211 PD-50 | 00824195, 00824427, 00824703 |
| Single Drum Roller | BW 211 D-4 EU-Flex | 00824429 |
| Single Drum Roller | BW 211 D-4i | 00824437 |
| Single Drum Roller | BW 211-40 | 00826367 |
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.
