The Bomag 06421251 Star Knob is a genuine OEM replacement designed for a wide range of Bomag single drum rollers, tandem rollers, and recycler/stabilizer machines. Sourced directly from Bomag, this star knob meets the same production standards as the original component installed at the factory. It is confirmed compatible with an extensive lineup of BW-series single drum and tandem rollers — including BW 177, BW 211, BW 212, BW 213, BW 214, BW 216, BW 219, and BW 226 models across multiple generation variants — as well as select BW tandem rollers and MPH and RS recycler/stabilizer models. When your original knob becomes stripped, cracked, or lost, part number 06421251 restores full operator control without any guesswork on fitment.
Key Features
- Genuine OEM Construction — manufactured to Bomag's exact material and dimensional specifications, ensuring the knob threads, grip profile, and torque resistance match the original component precisely
- Drop-In Replacement — threads directly onto the existing mounting point with no modification to the machine; restores the original feel and function immediately upon installation
- Broad BW-Series Coverage — fits BW 177, BW 211, BW 212, BW 213, BW 214, BW 216, BW 219, and BW 226 single drum rollers across multiple generation suffixes, plus select BW tandem rollers and MPH 125, MPH 600, RS 460, and RS 650 recycler/stabilizer models
- Operator Control Restored — a worn or missing star knob compromises the operator's ability to make precise adjustments; this replacement restores firm, ergonomic grip and consistent control response
- Verified Part Number — order with confidence using Bomag part number 06421251 to confirm you are receiving the correct knob for your machine's specific configuration
A star knob is a multi-lobed manual fastening and adjustment knob used by the operator to lock or set a control, guard, panel, or adjustable component in position. Its radiating lobes allow the operator to apply adequate torque by hand without the need for tools, making field adjustments quick and straightforward. When the knob becomes cracked, stripped, or broken, the associated adjustment point can no longer be secured reliably, which can affect machine setup accuracy and slow down operation.
Part Details
| Part Number | 06421251 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Star Knob |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Single Drum Roller | BW 211 DE-40 | 00800913, 00818741 |
| Single Drum Roller | BW 177 D-3 | 00815310, 00817503 |
| Single Drum Roller | BW 216 D-3 | 00815340, 00817214, 00817535 |
| Single Drum Roller | BW 178 D-3 | 00815515 |
| Single Drum Roller | BW 177 DH-3 | 00817505, 00817751 |
| Single Drum Roller | BW 177 PDH-3 | 00817508 |
| Single Drum Roller | BW211D 3 | 00817520, 00817581, 00817649 |
| Single Drum Roller | BW212D 3 | 00817521 |
| Single Drum Roller | BW 213 D-3 | 00817522, 00817523, 00817588 |
| Single Drum Roller | BW 213 DH-3 | 00817526, 00817589 |
| Single Drum Roller | BW 213 PDH-3 | 00817529, 00817530, 00817590 |
| Single Drum Roller | BW 214 DH-3 | 00817532, 00817592 |
| Single Drum Roller | BW 216 DH-3 | 00817537 |
| Single Drum Roller | BW 219 DH-3 | 00817540 |
| Single Drum Roller | BW 219 PDH-3 | 00817544 |
| Single Drum Roller | BW 225 D-3 | 00817546 |
| Single Drum Roller | BW177PDH 3 | 00817579 |
| Single Drum Roller | BW177DH-3 | 00817580 |
| Single Drum Roller | C 850 C | 00817583 |
| Single Drum Roller | BW177D-3 | 00817586 |
| Tandem Roller | BW 184 AD-2 AM | 00817600 |
| Single Drum Roller | BW 211 PD-3 | 00817608 |
| Single Drum Roller | BW 216 DHC-3 | 00817643 |
| Single Drum Roller | BW 211-PD-3 | 00817651 |
| Single Drum Roller | BW 213 DH-3 USA | 00817671 |
| Single Drum Roller | BW 213 PDH-3 USA | 00817673 |
| Single Drum Roller | BW 177 D-3 USA | 00817675 |
| Single Drum Roller | BW 177 DH-3 USA | 00817677 |
| Single Drum Roller | BW 177 PDH-3 USA | 00817679 |
| Tandem Roller | BW 174 AD-2 AM | 00817693 |
| Tandem Roller | BW 154 AD-4 AM | 00817699, 00818447 |
| Tandem Roller | BW 174 AC-2 AM | 00817714 |
| Tandem Roller | BW 170 AD-2 AM | 00817716 |
| Single Drum Roller | BW 213 PDH-40 | 00817733 |
| Single Drum Roller | BW 177 PDH-4 | 00817763, 00818541 |
| Single Drum Roller | BW 177 DH-4 | 00817765, 00818453, 00818543, 00824037, 00824133 |
| Single Drum Roller | BW 179 DH-4 | 00817767, 00818545, 00824137 |
| Single Drum Roller | BW 179 PDH-4 | 00817769, 00818549, 00824139 |
| Single Drum Roller | BW 211 D-4 | 00817771, 00817951, 00818127, 00824159, 00824389 |
| Single Drum Roller | BW 213 D-4 | 00817773, 00818293, 00824157, 00824387 |
| Single Drum Roller | BW 213 DH-4 | 00817775, 00817779, 00817781, 00818123, 00818125, 00818289, 00824039, 00824041, 00824143, 00824153 |
| Single Drum Roller | BW 213 PDH-4 | 00817777, 00818121, 00824145, 00824423 |
| Single Drum Roller | BW 213 DH-40 | 00817785 |
| Single Drum Roller | BW 214 DH-4 | 00817789, 00824147 |
| Single Drum Roller | BW 214 PDH-4 | 00817791, 00818345 |
| Single Drum Roller | BW 216 DH-4 | 00817793, 00818155, 00818849 |
| Single Drum Roller | BW 216 PDH-4 | 00817795, 00818157 |
| Single Drum Roller | BW 216 D-4 | 00817797, 00818351, 00824043 |
| Single Drum Roller | BW 219 DH-4 | 00817799, 00818163, 00818857 |
| Single Drum Roller | BW 219 PDH-4 | 00817807, 00818071, 00818859 |
| Single Drum Roller | BW 226 DH-4 | 00817809, 00817813, 00817819, 00818049, 00818073, 00818861, 00818865, 00825077 |
| Single Drum Roller | BW 226 PDH-4 | 00817811, 00818075 |
| Single Drum Roller | BW 219 D-4i | 00817817 |
| Tandem Roller | BW 190 AD-4 AM | 00817825, 00818309, 00824021 |
| Single Drum Roller | BW 219 D-4 | 00817835, 00818095, 00818373, 00818853, 00824821 |
| Tandem Roller | BW 203 AD-4 AM | 00817837, 00818591, 00824019 |
| Single Drum Roller | BW177D 3 | 00817863 |
| Single Drum Roller | BW177DH 3 | 00817865 |
| Single Drum Roller | BW 212 D-30 | 00817907 |
| Tandem Roller | BW 151 AD-4 AM | 00817913, 00818555, 00824017 |
| Tandem Roller | BW 141 AD-4 AM | 00817925, 00818553 |
| Single Drum Roller | BW 211 PD-4 | 00817939, 00818329, 00824161, 00824391 |
| Single Drum Roller | BW 211 D-40 | 00817941, 00818129, 00818391 |
| Single Drum Roller | BW 212 D-40 | 00817943, 00818881 |
| Single Drum Roller | BW 213 D-40 | 00817945, 00818291 |
| Single Drum Roller | BW 219 PD-4 | 00817949, 00818097, 00818375, 00818855 |
| Single Drum Roller | BW 216 DHC-4 | 00818027 |
| Single Drum Roller | BW 214 DHC-4 | 00818029, 00818337 |
| Single Drum Roller | BW 213 DHC-4 | 00818031, 00818331 |
| Single Drum Roller | BW 179 DHC-4 | 00818033, 00818547 |
| Single Drum Roller | BW 177 DHC-4 | 00818035, 00818455 |
| Single Drum Roller | BW 226 DH-4i | 00818051, 00824227 |
| Single Drum Roller | BW 216 PD-4 | 00818053, 00818353, 00824155 |
| Single Drum Roller | BW 212 PD-40 | 00818061, 00818883 |
| Single Drum Roller | BW 213 PD-40 | 00818063 |
| Single Drum Roller | BW 211 PD-40 | 00818065, 00818319 |
| Single Drum Roller | BW 213 PDHC-4 | 00818117, 00818333 |
| Single Drum Roller | BW 214 PDHC-4 | 00818119 |
| Single Drum Roller | BW 177 D-40 | 00818165 |
| Single Drum Roller | BW 213 PD-4 | 00818167, 00818335 |
| Single Drum Roller | BW 177 DH-40 | 00818169 |
| Single Drum Roller | BW 177 PDH-40 | 00818171 |
| Single Drum Roller | BW 177 PDHC-4 | 00818283, 00818539 |
| Single Drum Roller | BW 179 PDHC-4 | 00818285 |
| Tandem Roller | BW 154 AP-4 AM | 00818299, 00824177, 00824715 |
| Tandem Roller | BW 154 ACP-4 AM | 00818303, 00824719 |
| Tandem Roller | BW 174 AP-AM | 00818343, 00818537 |
| Single Drum Roller | BW 216 PDHC-4 | 00818349 |
| Tandem Roller | BW 174 ACP-AM | 00818355, 00818535 |
| Single Drum Roller | BW 213 DH 16 | 00818383, 00824151 |
| Single Drum Roller | BW211D 40 | 00818415 |
| Single Drum Roller | BW211PD 40 | 00818417 |
| Single Drum Roller | BW213DH 40 | 00818419 |
| Single Drum Roller | C850D | 00818433 |
| Single Drum Roller | BW 213 DH 4 | 00818437 |
| Single Drum Roller | BW 177 D-4 | 00818451 |
| Tandem Roller | BW 170 AP AM | 00818515 |
| Tandem Roller | BW 151 AC-4 AM | 00818559, 00824025 |
| Single Drum Roller | BW177D 40 | 00818579 |
| Single Drum Roller | BW177PDH 40 | 00818585 |
| Single Drum Roller | BW 216 D-40 | 00818611 |
| Single Drum Roller | BW 214 D-4 | 00818651, 00824185 |
| Single Drum Roller | BW 216 PD-40 | 00818653 |
| Tandem Roller | BW 174 AP-4 AM | 00818655, 00818845, 00824543 |
| Single Drum Roller | BW 218 D-40 | 00818671 |
| Recycler / Stabilizer | MPH 125 | 00818681, 00818909 |
| Single Drum Roller | BW 332 | 00818725 |
| Single Drum Roller | BW 211 D-50 | 00818869, 00824425, 00824701 |
| Tandem Roller | BW 174 AP-4 AM PB | 00818971 |
| Single Drum Roller | BW 220 D-4 | 00818989 |
| Single Drum Roller | BW 177 D-50 | 00824087 |
| Single Drum Roller | BW 177 DH-50 | 00824089 |
| Single Drum Roller | BW 177 PDH-50 | 00824091 |
| Tandem Roller | BW 174 AP-4i AM | 00824093, 00824627, 00825051 |
| Recycler / Stabilizer | MPH 600 | 00824097, 00824099 |
| Single Drum Roller | BW 215 D-40 | 00824167 |
| Single Drum Roller | BW 211 PD-50 | 00824195, 00824427, 00824703 |
| Single Drum Roller | BW 219 DH-4i | 00824221 |
| Single Drum Roller | BW 219 PDH-4i | 00824225 |
| Tandem Roller | BW 154 AP-4i AM | 00824385 |
| Tandem Roller | BW 203 AD-4 AM EU-Flex | 00824397 |
| Single Drum Roller | BW 211 D-4 EU-Flex | 00824429 |
| Single Drum Roller | BW 213 D-4 EU-Flex | 00824431 |
| Single Drum Roller | BW 213 DH-4 EU-Flex | 00824433 |
| Single Drum Roller | BW 213 DH-4BVC EU-Flex | 00824435 |
| Single Drum Roller | BW 211 D-4i | 00824437 |
| Single Drum Roller | BW 213 DH-4i | 00824439, 00824445, 00824447, 00824673, 00824675 |
| Single Drum Roller | BW 213 D-4i | 00824443, 00824671 |
| Single Drum Roller | BW 213 PDH-4i | 00824455, 00824685 |
| Single Drum Roller | BW 214 DH-4i | 00824459 |
| Single Drum Roller | BW 216 D-4i | 00824463, 00824693 |
| Single Drum Roller | BW 216 DH-4i | 00824467, 00824695 |
| Single Drum Roller | BW 216 PDH-4i | 00824469 |
| Single Drum Roller | BW 214 DH-4 EU Flex | 00824565 |
| Single Drum Roller | BW 211 D-5 | 00824571, 00824859, 00825241, 00826057, 00826575, 00826929, 00826931 |
| Single Drum Roller | BW 211 DH-5 | 00824573, 00826559, 00826905 |
| Single Drum Roller | BW 213 DH-5 | 00824575, 00824863, 00825983 |
| Single Drum Roller | BW 213 | 00824577, 00825991 |
| Single Drum Roller | BW 216 D-5 | 00824579, 00824869, 00825277, 00825993 |
| Single Drum Roller | BW 219 DH-5 | 00824581, 00824875, 00825223, 00825701, 00825851 |
| Single Drum Roller | BW 226-5 | 00824583, 00824883, 00825717 |
| Tandem Roller | BW 154 ACP-4i AM | 00824589, 00825383 |
| Recycler / Stabilizer | MPH 600 3B/4i-PB | 00824645 |
| Single Drum Roller | BW 213 DH 4I | 00824677, 00824679 |
| Single Drum Roller | BW 214 D-4i | 00824687 |
| Single Drum Roller | BW 216 PD-4i | 00824697 |
| Single Drum Roller | BW 211 PDH-5 | 00824725, 00826563 |
| Single Drum Roller | BW 212 DH-5 | 00824727, 00826913 |
| Single Drum Roller | BW213DH P-5 | 00824729, 00825989 |
| Single Drum Roller | BW 213 PDH-5 | 00824731, 00825275, 00825985 |
| Single Drum Roller | BW 213-5 | 00824733, 00824867, 00825987 |
| Recycler / Stabilizer | MPH 600 EU-FLEX | 00824751 |
| Single Drum Roller | BW 213 D-5 | 00824761, 00824861, 00825271, 00826071, 00826917 |
| Single Drum Roller | BW 212 D-40 BR | 00824785 |
| Single Drum Roller | BW 220 D-40 | 00824803, 00824989 |
| Recycler / Stabilizer | RS 460 | 00824809 |
| Single Drum Roller | BW 212 D-5 | 00824811 |
| Single Drum Roller | BW 214 D-5 | 00824813, 00826359 |
| Single Drum Roller | BW 226 DH-5 | 00824815, 00824881 |
| Single Drum Roller | BW 226 DI-5 | 00824817, 00824975, 00825711 |
| Single Drum Roller | BW 226 RC-5 | 00824819 |
| Single Drum Roller | BW 216 DH-5 | 00824825, 00825997 |
| Single Drum Roller | BW 216 PDH-5 | 00824827 |
| Single Drum Roller | BW 219 D-5 | 00824829, 00824873, 00825219, 00825699, 00825849 |
| Single Drum Roller | BW 219-5 | 00824831, 00826787 |
| Single Drum Roller | BW 211 PD-5 | 00824841, 00825269, 00826561 |
| Single Drum Roller | BW 216 PD-5 | 00824845, 00824871 |
| Single Drum Roller | BW 219 PDH-5 | 00824849, 00824879, 00825705, 00825853 |
| Single Drum Roller | BW 226 PDH-5 | 00824851, 00825057, 00825229 |
| Single Drum Roller | BW 219 PD-5 | 00824877, 00825703 |
| Tandem Roller | BW 174 AP-4f AM | 00824909 |
| Single Drum Roller | BW 219 DH-4i EU-Flex | 00824967 |
| Single Drum Roller | BW 226 DH-4i EU-Flex | 00824969 |
| Single Drum Roller | BW 226 | 00824971 |
| Tandem Roller | BW 174 ACP 4I AM | 00825103 |
| Recycler / Stabilizer | RS 650 | 00825131 |
| Single Drum Roller | BW 211-40 | 00826367 |
| Single Drum Roller | BW 226-5 CL | 00826805 |
| Single Drum Roller | BW 213 D-5 PL | 00827113 |
| Single Drum Roller | BW 211 D-5 PL | 00827237, 00827249 |
| Single Drum Roller | BW 211 DH-5 PL | 00827239, 00827251 |
| Single Drum Roller | BW 211 PD-5 PL | 00827241 |
| Single Drum Roller | BW 211 PDH-5 PL | 00827243 |
| Single Drum Roller | BW 212 DH-5 PL | 00827259 |
| Single Drum Roller | BW 213-5 PL | 00827273 |
| Single Drum Roller | BW 213 DH | 00827275 |
| Single Drum Roller | BW 213 DH-5 PL | 00827277 |
| Single Drum Roller | BW 213 PDH-5 PL | 00827279 |
| Single Drum Roller | BW 216 D-5 PL | 00827281 |
| Single Drum Roller | BW 216 PDH-5 PL | 00827287 |
| Single Drum Roller | BW 219 D-5 PL | 00827291 |
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.
