The Bomag 05903273 Combination Radiator is a genuine OEM cooling component designed for Bomag BW 100 AD-4, BW 100 AC-4, BW 120 AD-4, BW 120 AC-4, BW 125 AC-4, and BW 125 AD-4 tandem rollers. Sourced directly from Bomag, this combination radiator meets the original design specifications for the machines it serves, ensuring correct thermal performance across the full fitment range. This is a direct OEM replacement that installs in place of the original unit with no fabrication or adaptation work — a straightforward swap that gets your tandem roller back to work. If your machine is running hot or the existing radiator shows signs of damage or corrosion, replacing it with part number 05903273 restores proper cooling capacity and protects the engine and hydraulic systems from heat-related damage.
Key Features
- Genuine OEM Thermal Performance — built to the original heat-dissipation specification for BW-series tandem rollers, maintaining correct operating temperatures under sustained paving loads
- Direct OEM Replacement — mounts to the same brackets and connects to the same coolant and hydraulic lines as the original unit, with no modification to the machine required
- Broad Tandem Roller Coverage — fits BW 100 AD-4, BW 100 AC-4, BW 120 AD-4, BW 120 AC-4, BW 125 AC-4, and BW 125 AD-4 tandem rollers
- Protects Engine and Hydraulics — a fully functioning combination radiator prevents overheating that can cause costly engine damage, hydraulic fluid degradation, and unplanned shutdowns on the job
- Verified Bomag Part Number — order with confidence knowing part number 05903273 is the correct OEM reference for these tandem roller models
A combination radiator manages thermal load across multiple systems simultaneously — typically cooling both the engine coolant circuit and the hydraulic oil circuit within a single, compact core assembly. On tandem rollers like the BW 100 and BW 120 series, where engine and hydraulic systems work continuously during asphalt compaction, keeping both fluids within their operating temperature range is critical to sustained output and component longevity. When the combination radiator becomes damaged, blocked, or starts to leak, heat builds up rapidly and can cause the machine to shut down under load or, worse, cause lasting damage to the engine or hydraulic pump. Replacing this component with the correct OEM unit restores full cooling capacity and protects downstream systems.
Part Details
| Part Number | 05903273 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Combination Radiator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 100 AD-4 | 00817685, 00818465 |
| Tandem Roller | BW 100 AC-4 | 00817687, 00818467 |
| Tandem Roller | BW 120 AD-4 | 00817689, 00818377, 00818469 |
| Tandem Roller | BW 120 AC-4 | 00817691, 00818471 |
| Tandem Roller | BW 125 AC-4 | 00818271 |
| Tandem Roller | BW 125 AD-4 | 00818473 |
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.
