The Bomag 05546992 Piston Seal is a genuine OEM piston seal designed for BW 190 AD-4 AM and BW 203 AD-4 AM tandem rollers. Sourced directly from Bomag, this seal delivers the exact material grade, compression rating, and dimensional tolerances required to maintain hydraulic integrity in the cylinder assemblies of these machines. It fits the BW 190 AD-4 AM, BW 203 AD-4 AM, and BW 203 AD-4 AM EU-Flex tandem rollers, making it the correct choice for operators and service technicians working on this equipment. Choosing a genuine OEM seal means no guesswork on fitment or seal compatibility — this component is built to the same specification as the original.
Key Features
- OEM-Grade Seal Material — manufactured to Bomag's original compression rating and material specification, ensuring consistent hydraulic sealing performance in the cylinder bore
- Direct Hydraulic Cylinder Fit — engineered to seat correctly in the piston groove, maintaining proper contact with the cylinder wall without rework or shimming
- Confirmed Tandem Roller Fitment — compatible with BW 190 AD-4 AM, BW 203 AD-4 AM, and BW 203 AD-4 AM EU-Flex tandem rollers as specified by Bomag's OEM parts catalog
- Hydraulic System Integrity — a correctly functioning piston seal maintains pressure differential across the cylinder, supporting consistent drum drive and steering response on the roller
- Genuine Bomag OEM Part — part number 05546992 is sourced from Bomag's authorized supply chain, so fitment and quality are backed by the manufacturer
A piston seal sits within the groove of a hydraulic cylinder's piston and creates a pressure-tight barrier between the two sides of the cylinder bore. This seal is what allows hydraulic pressure to build and move the piston in a controlled direction — whether that's driving drum rotation, managing articulation, or controlling steering on a tandem roller. When a piston seal wears out or fails, internal hydraulic fluid bypasses the piston, causing a loss of pressure, sluggish or unresponsive machine movement, and potential for accelerated wear on other hydraulic components. Replacing it promptly with a correctly spec'd seal, like the Bomag 05546992, restores full hydraulic function and protects the broader system.
Part Details
| Part Number | 05546992 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Piston Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309, 00824021 |
| Tandem Roller | BW 203 AD-4 AM | 00818591, 00824019 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
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.
