The Bomag 05903336 Oil Cooler is a genuine OEM component designed for BW 135 AD, BW 138 AD, BW 138 AC, and BW 138-AD tandem rollers. Sourced directly from Bomag, this oil cooler matches the original unit to deliver an exact, drop-in fit with no guesswork on compatibility. As a genuine OEM part, it is built to the same standard as the cooler that left the factory with your machine, ensuring consistent thermal performance across the full operating cycle. This cooler is the right choice for operators running BW 138-series and BW 135 AD tandem rollers who need a dependable, long-lasting replacement.
Key Features
- Genuine OEM Thermal Precision — engineered to Bomag's original flow and heat-dissipation specification for tandem roller hydraulic systems, not a generic approximation
- Direct Drop-In Replacement — matches the original mounting configuration and port sizing on BW 135 AD, BW 138 AD, BW 138 AC, and BW 138-AD tandem rollers for a straightforward swap
- Tandem Roller Coverage — a single part number covers the BW 135 AD and the full BW 138 family, including the BW 138 AD, BW 138 AC, and BW 138-AD variants
- Protects Against Overheating — a fully functional oil cooler keeps hydraulic fluid temperatures in range, preventing viscosity breakdown and premature wear on pumps, motors, and valves
- Verified Bomag Part Number — part number 05903336 is confirmed against the Bomag OEM catalog, so you can order with confidence that you are receiving the correct unit
The oil cooler manages the temperature of hydraulic fluid circulating through the tandem roller's drive and vibration systems. By transferring heat away from the fluid before it returns to the hydraulic circuit, the cooler keeps oil viscosity stable and protects sensitive downstream components from thermal stress. When the oil cooler deteriorates or fails, fluid temperatures climb unchecked, accelerating seal degradation, reducing hydraulic efficiency, and risking damage to pumps and motors — making timely replacement essential to keeping the machine productive on the paving pass.
Part Details
| Part Number | 05903336 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Oil Cooler |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 135 AD | 00818357 |
| Tandem Roller | BW 138 AD | 00818359 |
| Tandem Roller | BW 138 AC | 00818361 |
| Tandem Roller | BW 138-AD | 00818389 |
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.
