67 Suspension parts are listed for the 2021 BMW M440I, in 7 part types, covering the 3.0L L6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 BMW M440I, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. Most of the listed parts are Control Arm (25 parts), Sway Bar Link (25 parts) and Shock / Strut (6 parts). The other 4 part types cover the remaining 11 parts.
The 2021 BMW M440I came with a single engine, the 3.0L L6 Turbocharged, and every part is verified against it.
15 brands supply suspension parts for the 2021 BMW M440I, led by MEVOTECH (12 parts), DELPHI (10 parts) and BILSTEIN (9 parts), plus 12 more brands. Quality grades include Daily Driver, Economy and Increased Handling/Stability.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 BMW M440I. 10 parts have it, including DORMAN 527124 (Control Arm) and MEVOTECH MS108186 (Sway Bar Link). Each part number opens a page with every vehicle that part fits.
Control Arm
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 527124 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Lower Rearward | View on Amazon |
| MEVOTECH Popular | CMS101648 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| MEVOTECH Popular | CMS101649 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| SUSPENSIA Popular | X05CJ1126 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| SUSPENSIA Popular | X05CJ1127 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DELPHI | TC4389 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DELPHI | TC4480 | 🇺🇸 US 🇨🇦 CA | Rear Left Upper ForwardLateral Arm | View on Amazon |
| DELPHI | TC9316 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DELPHI | TC4481 | 🇺🇸 US 🇨🇦 CA | Rear Right Upper ForwardLateral Arm | View on Amazon |
| DELPHI | TC4455 | 🇺🇸 US 🇨🇦 CA | Rear Upper | View on Amazon |
| DELPHI | TC8798 | 🇺🇸 US 🇨🇦 CA | RearTrailing Arm | View on Amazon |
| DELPHI | TC4390 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DELPHI | TC9317 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DORMAN | 520985 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| DORMAN | 520986 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| MEVOTECH | CMS101744 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| MEVOTECH | CMS101745 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| SUSPENSIA | X05LA0576 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Lower Forward | View on Amazon |
| SUSPENSIA | X05CJ1701 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| SUSPENSIA | X05CJ1702 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1028375 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| BECK/ARNLEY | 1028376 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| MEVOTECH | GS101648 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original GradeComplete Arm with Ball Joint | View on Amazon |
| MEVOTECH | GS101649 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original GradeComplete Arm with Ball Joint | View on Amazon |
| ÜRO PARTS | 31106898071 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left RearwardOnly for Adaptive M Chassis (S2VFA) or M Sports Suspension (S704A) | 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.
25 Control Arm parts are listed for the 2021 BMW M440I, from DELPHI, MEVOTECH, SUSPENSIA and 3 other brands. DORMAN 527124 carries the "Popular" badge.
The Daily Driver section lists 20 options from DELPHI, SUSPENSIA, MEVOTECH and 1 other brand — grouped for everyday commuting duty. DORMAN 527124 is listed in this group.
In the Economy grade, BECK/ARNLEY, MEVOTECH and ÜRO PARTS supply 5 parts: the catalog's value-priced group. A representative part number is BECK/ARNLEY 1028375.
Control Arm Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LEMFÖRDER | 4435101 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Front Left RearwardExc. Adaptive Control Suspension | View on Amazon |
| LEMFÖRDER | 4506901 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear Left Upper ForwardInner | View on Amazon |
| LEMFÖRDER | 4507201 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear Left Upper ForwardOuter | View on Amazon |
This table covers the bushings pressed into each control arm. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
LEMFÖRDER supplies the 3 Control Arm Bushing parts for the 2021 BMW M440I.
This group includes LEMFÖRDER 4435101, LEMFÖRDER 4506901 and LEMFÖRDER 4507201.
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 Rear | 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 M440I, from ARNOTT, FCS and MONROE.
Part numbers include ARNOTT RH3718, FCS HS008 and MONROE HS10203.
Shock / Strut
Increased Handling/Stability
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN | 22303295 | 🇺🇸 US 🇨🇦 CA | B6 PerformanceFor Stock Ride Height | View on Amazon |
| BILSTEIN | 20303426 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B6 Performance (Damp Tronic) | View on Amazon |
| BILSTEIN | 22305022 | 🇺🇸 US 🇨🇦 CA | B6 PerformanceFor Stock Ride Height | View on Amazon |
| BILSTEIN | 22305084 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B6 PerformanceFor Stock Ride Height | View on Amazon |
| BILSTEIN | 22305091 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B6 PerformanceFor Stock Ride Height | View on Amazon |
Original Ride Quality
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN | 19323305 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | B4 OE Replacement | 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 6 Shock / Strut parts for the 2021 BMW M440I.
The Increased Handling/Stability section lists 5 options from BILSTEIN — grouped under the catalog's "Increased Handling/Stability" designation — the notes column spells out what sets them apart. BILSTEIN 22303295 is listed in this group.
In the Original Ride Quality grade, BILSTEIN supplies 1 part: grouped under the catalog's "Original Ride Quality" designation — the notes column spells out what sets them apart. A representative part number is BILSTEIN 19323305.
Part numbers include BILSTEIN 22303295, BILSTEIN 20303426 and BILSTEIN 22305022, among others listed above.
Shock / Strut Mount
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SACHS | 803449 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | AVQ0770 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
This table covers the upper mounts (and bearings) a strut bolts through at the tower. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
2 Shock / Strut Mount parts for the 2021 BMW M440I come from 2 brands — SACHS and REIN.
Daily Driver: 1 part, from SACHS. A representative part number is SACHS 803449.
The Economy section: 1 option from REIN. REIN AVQ0770 is listed in this group.
This group includes SACHS 803449 and REIN AVQ0770.
Suspension Kit
Adjustable Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN | 48300162 | 🇺🇸 US 🇨🇦 CA | EVO T1 | View on Amazon |
Increased Handling/Stability
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN | 47300118 | 🇺🇸 US 🇨🇦 CA | EVO S | View on Amazon |
| BILSTEIN | 89312780 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | EVO R | View on Amazon |
This table covers the Suspension kits.
BILSTEIN supplies the 3 Suspension Kit parts for the 2021 BMW M440I.
The Adjustable Performance section lists 1 option from BILSTEIN — grouped under the catalog's "Adjustable Performance" designation — the notes column spells out what sets them apart. BILSTEIN 48300162 is listed in this group.
The Increased Handling/Stability section: 2 options from BILSTEIN. BILSTEIN 47300118 is listed in this group.
Part numbers include BILSTEIN 48300162, BILSTEIN 47300118 and BILSTEIN 89312780.
Sway Bar Link
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Popular | MS108186 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH Popular | MS108185 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| SUSPENSIA Popular | X05SL0924 | 🇺🇸 US 🇨🇦 CA | Rear LeftM440i Base Model | View on Amazon |
| DELPHI | TC6998 | 🇺🇸 US 🇨🇦 CA | Housing Material: Steel & Plastic | View on Amazon |
| DELPHI | TC6999 | 🇺🇸 US 🇨🇦 CA | Bushings Included: YES | View on Amazon |
| DORMAN | 541820 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| DORMAN | 541819 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| DORMAN | 541809 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| DORMAN | 541810 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| LEMFÖRDER | 3616301 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| LEMFÖRDER | 3616401 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| MEVOTECH | MS108307 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH | MS108308 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MOOG | K751097 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| MOOG | K751098 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| SUSPENSIA | X05SL0531 | 🇺🇸 US 🇨🇦 CA | Front RightM440i Base Model | View on Amazon |
| SUSPENSIA | X05SL0532 | 🇺🇸 US 🇨🇦 CA | Front LeftM440i Base Model | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | SL14501 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| FVP Popular | SL14502 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| BECK/ARNLEY | 1017987 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Left | View on Amazon |
| BECK/ARNLEY | 1017988 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Right | View on Amazon |
| BECK/ARNLEY | 1017992 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| BECK/ARNLEY | 1017991 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| MEVOTECH | GS108185 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
| MEVOTECH | GS108186 | 🇺🇸 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.
25 Sway Bar Link parts are listed for the 2021 BMW M440I, from MEVOTECH, DORMAN, BECK/ARNLEY and 5 other brands. MEVOTECH MS108186 carries the "Popular" badge.
The Daily Driver section: 17 options from MEVOTECH, DORMAN, SUSPENSIA and 3 other brands. MEVOTECH MS108186 is listed in this group.
Economy: 8 parts, from BECK/ARNLEY, FVP and MEVOTECH. A representative part number is FVP SL14501.
Buying Suspension Parts for a 2021 BMW M440I
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Confirm you have the 3.0L L6 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 M440I?
Our catalog currently lists 67 suspension parts for the 2021 BMW M440I across 7 subcategories and 15 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of suspension problems on a 2021 BMW M440I?
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 M440I 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 M440I?
Every part on this page is matched to the 3.0L L6 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 M440I
Suspension Parts for Other BMW M440I Years
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