The Bomag 78040308 Tank Cover is a genuine OEM component designed for BW-series single drum rollers and tandem rollers, including the BW 172 D-2, BW 212 D-2, BW 142 D-2, BW 138 AD, BW 135 AD, and a broad range of BW 100, BW 120, BW 125, BW 131, BW 135, and BW 138 tandem roller variants. Sourced directly from Bomag, this tank cover matches the original part in fit, form, and material so installation is straightforward with no adaptation needed. Confirmed fitment spans both single drum and tandem roller configurations across multiple BW-series generations, making part number 78040308 a reliable choice when servicing this equipment.
Key Features
- Genuine OEM Construction — manufactured to Bomag's original material and dimensional standards, ensuring the cover seats and seals exactly as the factory-installed unit did
- Direct-Fit Replacement — engineered to match the original mounting points and profile on BW-series rollers, allowing a clean swap without rework or modification
- Broad BW-Series Coverage — confirmed fitment across single drum rollers including the BW 172 D-2, BW 142 D-2, and BW 212 D-2, plus tandem rollers including the BW 135 AD, BW 138 AD, BW 100 AC-3, BW 100 AD-3, BW 120 AC-3, BW 120 AD-3, BW 125 ACH, BW 125 ADH, BW 131 ACW-2, BW 131 AD-2, BW 135 AC, BW 138 AC, and BW 138-AD
- Tank Protection Restored — a properly fitted tank cover keeps debris, moisture, and contaminants out of the tank opening, protecting fluid integrity and preventing contamination-related damage
- Long-Term Durability — built to withstand the vibration, heat cycles, and outdoor exposure typical of daily roller operation, maintaining a secure fit over extended service intervals
The tank cover is a protective closure that seals the tank opening on the roller, preventing dirt, water, and foreign material from entering the fluid system during operation and storage. A correctly fitting cover is essential for maintaining clean fluid and avoiding contamination that can accelerate wear on internal components. When a tank cover cracks, warps, or goes missing, the tank becomes vulnerable to ingress that can compromise fluid quality and lead to costly downstream repairs.
Part Details
| Part Number | 78040308 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Tank Cover |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 172 D-2 | 00810074 |
| Single Drum Roller | BW 142 D-2 | 00810077 |
| Tandem Roller | BW 138 AD | 00810105, 00810191, 00817473 |
| Tandem Roller | BW 135 AD | 00810120, 00817471 |
| Single Drum Roller | BW 212 D-2 | 00810687 |
| Tandem Roller | BW 100 AC-3 | 00817457 |
| Tandem Roller | BW 100 AD-3 | 00817458 |
| Tandem Roller | BW 120 AC-3 | 00817462 |
| Tandem Roller | BW 120 AD-3 | 00817463 |
| Tandem Roller | BW 125 ACH | 00817466 |
| Tandem Roller | BW 125 ADH | 00817467 |
| Tandem Roller | BW 131 ACW-2 | 00817468 |
| Tandem Roller | BW 131 AD-2 | 00817469 |
| Tandem Roller | BW 135 AC | 00817470 |
| Tandem Roller | BW 138 AC | 00817472 |
| Tandem Roller | BW120AD 3 | 00817571 |
| Tandem Roller | BW 138-AD | 00817572 |
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.
