5 Suspension parts are listed for the 2021 BMW 120I, in 3 part types, covering the 2.0L L4 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The suspension system on the 2021 BMW 120I controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. All 5 listed parts are Control Arm (2 parts), Shock / Strut (2 parts) and Ride Height Sensor (1 part).
The 2021 BMW 120I came with a single engine, the 2.0L L4 Turbocharged, and every part is verified against it.
4 brands supply suspension parts for the 2021 BMW 120I, led by DORMAN (2 parts), ARNOTT (1 part) and FCS (1 part), plus 1 more brand.
Each part number listed for the 2021 BMW 120I opens a page with every vehicle that part fits.
Control Arm
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 528197 | 🇲🇽 MX | Rear LowerLateral Arm | View on Amazon |
| DORMAN | 527082 | 🇲🇽 MX | Rear UpperLateral Arm | 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.
DORMAN supplies both parts for the 2021 BMW 120I.
Listed part numbers: DORMAN 528197 and DORMAN 527082.
Ride Height Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARNOTT | RH4387 | 🇲🇽 MX | Fits Rear | 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.
One part is listed for the 2021 BMW 120I — ARNOTT RH4387.
Shock / Strut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FCS | 346478 | 🇲🇽 MX | Rear | View on Amazon |
| TOP NOTCH | SS0729 | 🇲🇽 MX | Suspension Shocks | 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.
2 Shock / Strut parts are listed for the 2021 BMW 120I, from FCS and TOP NOTCH.
Listed part numbers: FCS 346478 and TOP NOTCH SS0729.
Buying Suspension Parts for a 2021 BMW 120I
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Confirm you have the 2.0L L4 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 Shock / Strut .
Frequently Asked Questions
How many suspension parts fit the 2021 BMW 120I?
Our catalog currently lists 5 suspension parts for the 2021 BMW 120I across 3 subcategories and 4 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of suspension problems on a 2021 BMW 120I?
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 120I 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 120I?
Every part on this page is matched to the 2.0L L4 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 120I
Suspension Parts for Other BMW 120I Years
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