The Bomag 05903387 Ventilator 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 ventilator delivers an exact fit and meets the original design specification for these machines. If your tandem roller is running hot or airflow to the engine compartment has dropped off, replacing this part with the correct OEM unit is the straightforward fix. Confirm your model against the fitment list and order with confidence from DHS Equipment.
Key Features
- OEM Airflow Spec — engineered to move the precise volume of air required to keep the engine cooling system operating within its designed thermal range on Bomag tandem rollers
- Drop-In Replacement — mounts directly to the original bracket and drive points on the BW 135 AD and BW 138-series tandem rollers with no adaptation needed
- Broad BW 138-Series Coverage — fits the BW 138 AD, BW 138 AC, and BW 138-AD variants, as well as the BW 135 AD, covering the core lineup of these compact tandem rollers
- Cooling Integrity — a worn or seized ventilator starves the engine of cooling air, accelerating heat buildup and risking thermal shutdown during continuous paving passes; this part restores full airflow capacity
- Genuine Bomag Part — carries the Bomag OEM designation, ensuring the blade geometry, shaft diameter, and rotational balance match the original component exactly — critical for a cooling-system part where imbalance causes vibration and premature bearing wear
The ventilator is the engine cooling fan assembly responsible for drawing or forcing air across the engine's cooling system. On Bomag tandem rollers like the BW 135 AD and BW 138-series machines, consistent airflow is essential during sustained operation on hot asphalt — without it, engine temperatures rise quickly and the machine will throttle back or shut down to protect itself. When the ventilator blades crack, the hub loosens, or the unit becomes unbalanced, operators will notice increased engine temperature readings, unusual vibration near the engine bay, or audible changes in fan noise — all signs that this component needs to be replaced promptly to keep the roller productive on the job.
Part Details
| Part Number | 05903387 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Ventilator |
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.
