The Bomag 92020518 Exciter Unit is a genuine OEM component designed for Bomag BW-series tandem rollers, including the BW 154, BW 161, BW 174, BW 190, BW 202, BW 203, and BW 205 AD 4 families. Sourced directly from Bomag, this exciter unit matches the original specification and installs directly in place of the worn unit with no rework required. Verified fitment spans multiple -4 generation variants across the full tandem roller lineup, giving fleet operators and service technicians confidence in part number 92020518 when ordering for scheduled rebuilds or emergency repairs.
Key Features
- Genuine OEM Vibration Output — manufactured to Bomag's original eccentric-weight and bearing specification, ensuring the drum delivers the correct centrifugal force and amplitude for proper asphalt compaction
- Direct-Fit Replacement — matches the original mounting interface and shaft dimensions of the BW-series tandem drum assembly, allowing a clean swap without machining or adaptation
- Broad Tandem Roller Coverage — fits BW 154, BW 161, BW 174, BW 190, BW 202, BW 203, and BW 205 AD 4 tandem rollers across AD, ADH, AC, AP, ACP, ADO, and AM variants in the -4 generation
- Restored Compaction Performance — a worn or failed exciter unit causes uneven vibration, reduced mat density, and drum chatter; replacing it with part number 92020518 restores consistent, full-amplitude compaction
- Operational Safety — an out-of-balance or seized exciter assembly can produce destructive vibration loads on the drum shell and bearings; installing a correctly rated OEM unit protects the machine and operator from escalating mechanical damage
The exciter unit is the heart of the vibratory drum system in a tandem roller. It houses an eccentric shaft and weights driven by a hydraulic motor; as the shaft spins, the offset mass generates the centrifugal force that vibrates the drum and drives compaction energy into the asphalt or sub-base beneath. When the exciter unit wears — through bearing fatigue, seal failure, or eccentric-weight damage — vibration amplitude drops, compaction quality suffers, and uncontrolled imbalance can accelerate damage to surrounding drum components. Replacing a failed unit promptly with a properly rated exciter restores the drum's full compaction output and protects the rest of the drive train.
Part Details
| Part Number | 92020518 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Exciter Unit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 161 AD-4 | 00817641 |
| Tandem Roller | BW 202 AD-4 | 00817642, 00818381, 00818961, 00824005 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| 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 154 AD-4 | 00817901, 00818557 |
| Tandem Roller | BW 161 AC-4 | 00817947 |
| Tandem Roller | BW 154 AP-4 AM | 00818299, 00824177, 00824715 |
| Tandem Roller | BW 154 AP-4 | 00818301, 00824179, 00824717 |
| Tandem Roller | BW 154 ACP-4 | 00818305, 00824721 |
| Tandem Roller | BW 203 AD-4 | 00818599, 00818963 |
| Tandem Roller | BW 174 AP-4 AM | 00818655, 00818845, 00824543 |
| Tandem Roller | BW 174 AP-4 | 00818657, 00818847, 00824545 |
| Tandem Roller | BW 174 AP-4 AM PB | 00818971 |
| Tandem Roller | BW 174 AP-4 PB | 00818973 |
| Tandem Roller | BW 174 AP-4i AM | 00824093, 00824627, 00825051 |
| Tandem Roller | BW 174 AP-4i | 00824095, 00824629, 00825053 |
| Tandem Roller | BW 154 AP-4i AM | 00824385 |
| Tandem Roller | BW 202 AD-4 EU-Flex | 00824395 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
| Tandem Roller | BW 154 AP-4i | 00824587 |
| Tandem Roller | BW203AD-4 | 00824739, 00826243 |
| Tandem Roller | BW 205 AD 4 | 00824889 |
| Tandem Roller | BW 174 AP-4f AM | 00824909 |
| Tandem Roller | BW 174 AP-4f | 00824911 |
| 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.
