The Bomag 05821331 Lower Part Housing is a genuine OEM component designed for Bomag BW-series tandem rollers, including the BW 161 AD-4, BW 202 AD-4, BW 190 AD-4, BW 203 AD-4, and a wide range of generation-4 and generation-5 variants. Sourced directly from Bomag, this housing matches the original part in every dimension and material specification, ensuring a direct, trouble-free installation. This genuine OEM replacement is the correct choice when rebuilding or servicing the lower assembly on your tandem roller, covering both standard and specialty configurations such as the BW 161 ADH-4, BW 161 AC-4, BW 190 AD-4 AM, and BW 203 AD-4 AM, among others. With broad fitment across the BW 161, BW 190, BW 202, BW 203, and BW 205 tandem roller families, part number 05821331 is a versatile service part for mixed fleets.
Key Features
- Genuine OEM Structural Integrity — manufactured to Bomag's original design tolerances, ensuring the housing walls, mounting points, and mating surfaces align precisely with the surrounding lower assembly components.
- Direct Replacement Installation — replaces the original lower part housing without modification, using existing mounting hardware and interfaces for a clean swap during service or rebuild.
- Broad Tandem Roller Coverage — fits BW 161, BW 190, BW 202, BW 203, and BW 205 tandem rollers across multiple generation-4 and generation-5 variants, including AM, AC, ADH, ADO, and EU-Flex configurations.
- Structural Protection for Critical Components — the lower part housing encloses and shields internal drivetrain and compaction system elements from contamination, impact, and operational stress, keeping internal components properly seated and protected.
- Long-Term Durability — built from the same materials and processes as the factory original, this housing resists wear and deformation under the sustained vibration and load conditions typical of asphalt tandem roller operation.
The lower part housing forms the structural enclosure for the bottom section of a key assembly on Bomag tandem rollers. It provides a rigid, sealed housing that protects internal components from debris, moisture, and mechanical damage during compaction operations. When this housing becomes cracked, corroded, or damaged, it can compromise the integrity of the entire assembly — leading to contamination of internal parts, accelerated wear, and potential operational failure of the compaction system.
Part Details
| Part Number | 05821331 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Lower Part Housing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 161 AD-4 | 00817641, 00818959, 00824003, 00824735 |
| Tandem Roller | BW 202 AD-4 | 00817642, 00818381, 00818961, 00824005 |
| Tandem Roller | BW 161 ADH-4 | 00817739 |
| Tandem Roller | BW 190 AD-4 | 00817823, 00818379, 00818965, 00824009 |
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309, 00824021 |
| Tandem Roller | BW 203 AD-4 AM | 00817837, 00818591, 00824019, 00825067 |
| Tandem Roller | BW 161 AC-4 | 00817947, 00818589, 00818967 |
| Tandem Roller | BW 161 ADH-4 CHINA | 00818365 |
| Tandem Roller | BW 203 AD-4 | 00818599, 00818963 |
| Tandem Roller | BW 161 AD-5 | 00824103, 00824647 |
| Tandem Roller | BW 161 AC-5 | 00824109, 00824655 |
| Tandem Roller | BW 161 AD-50 | 00824111 |
| Tandem Roller | BW 202 AD-50 | 00824113 |
| Tandem Roller | BW 161 ADO-4 | 00824333, 00824335 |
| Tandem Roller | BW 161 ADO-5 | 00824359, 00824657 |
| Tandem Roller | BW 190 AD-5 | 00824361, 00824651 |
| Tandem Roller | BW 190 ADO-5 | 00824363, 00824661 |
| Tandem Roller | BW 161 AD-4 EU-Flex | 00824393 |
| Tandem Roller | BW 202 AD-4 EU-Flex | 00824395 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
| Tandem Roller | BW 161 ADO-50 | 00824417 |
| Tandem Roller | BW 202 ADO-50 | 00824419 |
| Tandem Roller | BW 202 AD-5 | 00824649 |
| Tandem Roller | BW203AD-4 | 00824739, 00826243 |
| Tandem Roller | BW 161 AC-50 | 00824853 |
| Tandem Roller | BW 205 AD 4 | 00824889 |
| Tandem Roller | BW 203 ADO-4 | 00825049 |
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.
