This page lists 47 suspension parts for the 2021 BMW M550I, across 6 part types, covering the 4.4L V8 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW M550I, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. 39 parts of the 47 listed are Control Arm (23 parts), Sway Bar Link (12 parts) and Ball Joint (4 parts). The other 3 part types cover the remaining 8 parts.
The 2021 BMW M550I came with a single engine, the 4.4L V8 Turbocharged, and every part is verified against it.
12 brands supply suspension parts for the 2021 BMW M550I, led by MEVOTECH (9 parts), DELPHI (9 parts) and DORMAN (7 parts), plus 9 more brands. Quality grades include Daily Driver and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 BMW M550I. 8 parts have it, including DORMAN 527090 (Control Arm) and DELPHI TC6984 (Sway Bar Link). Each part number opens a page with every vehicle that part fits.
Ball Joint
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 538378 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LowerM550i xDrive | View on Amazon |
| MEVOTECH | MS10597 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1018629 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Lower RearwardM550i xDrive | View on Amazon |
| MEVOTECH | GS10597 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
This table covers the ball joints that articulate each control arm at the knuckle.
4 Ball Joint parts are listed for the 2021 BMW M550I, from MEVOTECH, DORMAN and BECK/ARNLEY.
The Daily Driver section lists 2 options from DORMAN and MEVOTECH — grouped for everyday commuting duty. DORMAN 538378 is listed in this group.
In the Economy grade, BECK/ARNLEY and MEVOTECH supply 2 parts: the catalog's value-priced group. A representative part number is BECK/ARNLEY 1018629.
This group includes DORMAN 538378, MEVOTECH MS10597 and BECK/ARNLEY 1018629 and the remaining parts above.
Control Arm
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 527090 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right Lower RearwardM550i xDrive | View on Amazon |
| MEVOTECH Popular | CMS101598 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supremewith Upgraded Bushings | View on Amazon |
| MEVOTECH Popular | CMS101599 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supremewith Upgraded Bushings | View on Amazon |
| SUSPENSIA Popular | X05LA0415 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left UpperM550i xDrive | View on Amazon |
| DELPHI | TC4617 | 🇺🇸 US 🇨🇦 CA | Rear Left Lower RearwardLateral Arm | View on Amazon |
| DELPHI | TC4618 | 🇺🇸 US 🇨🇦 CA | Rear Right Lower RearwardLateral Arm | View on Amazon |
| DELPHI | TC4538 | 🇺🇸 US 🇨🇦 CA | Rear Left Upper ForwardLateral Arm | View on Amazon |
| DELPHI | TC4405 | 🇺🇸 US 🇨🇦 CA | Rear Left Upper Rearward | View on Amazon |
| DELPHI | TC4539 | 🇺🇸 US 🇨🇦 CA | Rear Right Upper ForwardLateral Arm | View on Amazon |
| DELPHI | TC4404 | 🇺🇸 US 🇨🇦 CA | Rear Right Upper Rearward | View on Amazon |
| DELPHI | TC4536 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball JointAdjustable | View on Amazon |
| DELPHI | TC4537 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball JointAdjustable | View on Amazon |
| DORMAN | 527089 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left Lower RearwardM550i xDrive | View on Amazon |
| DORMAN | 520831 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left Upper ForwardM550i xDrive | View on Amazon |
| DORMAN | 520832 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right Upper ForwardM550i xDrive | View on Amazon |
| MEVOTECH | CMS101584 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| SUSPENSIA | X05LA0395 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right Upper ForwardM550i xDrive | View on Amazon |
| SUSPENSIA | X05LA0397 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left Upper ForwardM550i xDrive | View on Amazon |
| SUSPENSIA | X05LA0414 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right UpperM550i xDrive | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Popular | 33326875104 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear Left Lower RearwardM550i xDrive | View on Amazon |
| BECK/ARNLEY | 1028310 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right Lower RearwardM550i xDrive | View on Amazon |
| BECK/ARNLEY | 1028309 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left Lower RearwardM550i xDrive | View on Amazon |
| MEVOTECH | GS101584 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original GradeComplete Arm with Ball Joint | View on Amazon |
This table covers the control arms that locate each hub relative to the chassis. Typical signs include clunks over bumps, a wander on the highway, or inner-edge tire wear. Get an alignment after any control-arm work, and inspect the ball joint and bushings that came with the arm.
23 Control Arm parts are listed for the 2021 BMW M550I, from DELPHI, DORMAN, MEVOTECH and 3 other brands. DORMAN 527090 carries the "Popular" badge.
The Daily Driver section: 19 options from DELPHI, DORMAN, SUSPENSIA and 1 other brand. DORMAN 527090 is listed in this group.
Economy: 4 parts, from BECK/ARNLEY, ÜRO PARTS and MEVOTECH. A representative part number is ÜRO PARTS 33326875104.
Control Arm Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWN0119 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Lower Outer ForwardM550i xDrive | View on Amazon |
This table covers the Control Arm nuts.
This group shows a single part: REIN HWN0119.
Ride Height Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT | RH3718 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear | View on Amazon |
| FCS | HS008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits FrontM550i xDrive | View on Amazon |
| MONROE | HS10203 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Frontwith Air Suspension | View on Amazon |
This table covers the Ride Height sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
3 Ride Height Sensor parts are listed for the 2021 BMW M550I, from ARNOTT, FCS and MONROE.
Listed part numbers: ARNOTT RH3718, FCS HS008 and MONROE HS10203.
Shock / Strut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN | 23400474 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B4 OE Replacement (Damp Tronic) | View on Amazon |
| BILSTEIN | 23400481 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B4 OE Replacement (Damp Tronic) | View on Amazon |
| BILSTEIN | 23400412 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B4 OE Replacement (Damp Tronic) | View on Amazon |
| BILSTEIN | 23400429 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B4 OE Replacement (Damp Tronic) | View on Amazon |
This table covers the shocks and struts that damp wheel motion. Typical signs include a nose that keeps bouncing, cupped tires, or fluid weeping down the body. Replace shocks or struts in axle pairs and renew the mounts if they are torn or collapsed.
BILSTEIN supplies the 4 Shock / Strut parts for the 2021 BMW M550I.
This group includes BILSTEIN 23400474, BILSTEIN 23400481 and BILSTEIN 23400412 and the remaining parts above.
Sway Bar Link
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | TC6984 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SUSPENSIA Popular | X05SL0180 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearM550i xDrive | View on Amazon |
| SUSPENSIA Popular | X05SL0072 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontM550i xDrive | View on Amazon |
| DORMAN | 541813 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontM550i xDrive | View on Amazon |
| DORMAN | 541836 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearM550i xDrive | View on Amazon |
| MEVOTECH | MS108262 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeIncludes Hardware | View on Amazon |
| MEVOTECH | MS108256 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeIncludes Hardware | View on Amazon |
| MOOG | K751103 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearM550i xDrive | View on Amazon |
| SUSPENSIA | X05SL0808 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Steel | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1018631 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearM550i xDrive | View on Amazon |
| BECK/ARNLEY | 1018630 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | FrontM550i xDrive | View on Amazon |
| MEVOTECH | GS108256 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
This table covers the links that connect the anti-roll bar to each control arm or strut. Typical signs include a clunk on one wheel over a driveway, or a rattle that goes away when you lean on the bar. Replace links in pairs; a seized stud often takes the bushing with it.
12 Sway Bar Link parts are listed for the 2021 BMW M550I, from SUSPENSIA, MEVOTECH, DORMAN and 3 other brands. DELPHI TC6984 carries the "Popular" badge.
The Daily Driver section: 9 options from SUSPENSIA, DORMAN, MEVOTECH and 2 other brands. DELPHI TC6984 is listed in this group.
Economy: 3 parts, from BECK/ARNLEY and MEVOTECH. A representative part number is BECK/ARNLEY 1018631.
Buying Suspension Parts for a 2021 BMW M550I
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Confirm you have the 4.4L V8 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Control Arm and Sway Bar Link .
Frequently Asked Questions
How many suspension parts fit the 2021 BMW M550I?
Our catalog currently lists 47 suspension parts for the 2021 BMW M550I across 6 subcategories and 12 brands, covering the 4.4L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of suspension problems on a 2021 BMW M550I?
Common symptoms include clunks over speed bumps, wandering steering, cupped tire wear, or a nose that keeps bouncing after a dip. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 BMW M550I was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 BMW M550I?
Every part on this page is matched to the 4.4L V8 Turbocharged engine. Then worn bushings often mimic bad shocks — inspect before buying, and remember loaded vs unloaded strut assemblies differ in labor by hours. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 BMW M550I
Suspension Parts for Other BMW M550I Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.