The Bomag 06421261 Star Knob is a genuine OEM Star Knob designed for Bomag BW-series tandem rollers and BM-series cold milling machines. Sourced directly from Bomag, this part matches the original component in every dimension, material, and fit, giving technicians and operators a straightforward, confidence-inspiring replacement. This Star Knob is confirmed for an extensive range of Bomag tandem rollers — including BW 170 AD, BW 174 AD, BW 161 AD-4, BW 154 AD-4, BW 151 AD-4, and their AM, AC, AP, ACP, AP-4, AP-4i, and APO-4i variants — as well as BM2000/65 Stage V and BM2200/65 Stage V cold milling machines. When an original knob cracks, strips, or goes missing, this genuine replacement restores proper control and ergonomic function without improvisation.
Key Features
- Genuine OEM Construction — manufactured to Bomag's original material and dimensional standards, ensuring the knob seats, threads, and torques exactly as the factory-installed unit does
- Direct OEM Replacement — engineered to install in place of the original Star Knob with no modifications, using the same mounting interface found across compatible BW tandem rollers and BM cold milling machines
- Broad Model Coverage — fits an extensive lineup of Bomag tandem rollers including BW 170 AD, BW 174 AD, BW 161 AD-4, BW 154 AD-4, BW 151 AD-4, and multiple AD, AP, ACP, AC, and AP-4i variants, plus BM2000/65 Stage V and BM2200/65 Stage V cold milling machines
- Secure Operator Control — a properly fitted star knob allows operators to make quick, positive adjustments in the field; a worn or missing knob makes controls difficult to operate and slows down routine machine setup
- Exact Part Number Match — ordering by Bomag part number 06421261 eliminates guesswork and ensures you receive the correct knob for your specific machine variant the first time
A star knob is a hand-operated fastening or adjustment control used to lock or release a setting on a machine without requiring tools. Its multi-point profile gives the operator a firm, comfortable grip and enough mechanical advantage to tighten or loosen the connection quickly, even when wearing gloves. When a star knob cracks, strips, or breaks, the associated adjustment becomes unreliable or impossible to secure, interrupting workflow and potentially leaving an operator unable to properly configure the machine before use.
Part Details
| Part Number | 06421261 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Star Knob |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Tandem Roller | BW 170 AD | 00817498 |
| Tandem Roller | BW 174 AD | 00817501 |
| Tandem Roller | BW 174 AD AM | 00817502 |
| Tandem Roller | BW 161 AD-4 | 00817641, 00818481, 00818959, 00824003 |
| Tandem Roller | BW 174 AD-2 AM | 00817693 |
| Tandem Roller | BW 174 AD-2 | 00817695 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| Tandem Roller | BW 174 AC-2 | 00817712 |
| Tandem Roller | BW 174 AC-2 AM | 00817714 |
| Tandem Roller | BW 170 AD-2 AM | 00817716 |
| Tandem Roller | BW 161 ADH-4 | 00817739 |
| Tandem Roller | BW151AD 4 | 00817843 |
| Tandem Roller | BW 154 AD-4 | 00817901, 00818557 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555, 00824017 |
| 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 AM | 00818303, 00824719 |
| Tandem Roller | BW 154 ACP-4 | 00818305, 00824721 |
| Tandem Roller | BW 174 AP-AM | 00818343, 00818537 |
| Tandem Roller | BW 174 ACP-AM | 00818355, 00818535 |
| Tandem Roller | BW 174 AP | 00818395, 00818517 |
| Tandem Roller | BW 170 AP AM | 00818515 |
| Tandem Roller | BW 174 ACP | 00818519 |
| Tandem Roller | BW 151 AD-4 | 00818563, 00818957, 00824001 |
| 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 161 ADO-4 | 00824333, 00824335 |
| Tandem Roller | BW 154 AP-4i AM | 00824385 |
| Tandem Roller | BW 161 AD-4 EU-Flex | 00824393 |
| Tandem Roller | BW 154 AP-4i | 00824587 |
| Tandem Roller | BW 154 ACP-4i AM | 00824589, 00825383 |
| Tandem Roller | BW 174 APO-4i | 00825099 |
| Tandem Roller | BW 174 ACP 4I AM | 00825103 |
| Cold Milling Machine | BM2000/65 Stage V | 00826467 |
| Cold Milling Machine | BM2200/65 Stage V | 00826469 |
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.
