This page lists 26 suspension parts for the 2021 BMW I3, across 6 part types, covering both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW I3, 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 (8 parts), Sway Bar Link (8 parts) and Ride Height Sensor (4 parts). The other 3 part types cover the remaining 6 parts.
The 2021 BMW I3 was sold with both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS. All 26 parts on this page fit every engine.
13 brands supply suspension parts for the 2021 BMW I3, led by DORMAN (4 parts), SACHS (3 parts) and SUSPENSIA (2 parts), plus 10 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 I3. 4 parts have it, including SUSPENSIA X05CJ7359 (Control Arm) and ULTRA-POWER K750851 (Sway Bar Link). Each part number opens a page with every vehicle that part fits.
Control Arm
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SUSPENSIA Popular Fits: all 2021 I3 engines | X05CJ7359 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| SUSPENSIA Popular Fits: all 2021 I3 engines | X05CJ7358 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| DELPHI Fits: all 2021 I3 engines | TC4478 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DELPHI Fits: all 2021 I3 engines | TC4479 | 🇺🇸 US 🇨🇦 CA | Complete Arm with Ball Joint | View on Amazon |
| DORMAN Fits: all 2021 I3 engines | 526687 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| DORMAN Fits: all 2021 I3 engines | 526688 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Complete Arm with Ball Joint | View on Amazon |
| MEVOTECH Fits: all 2021 I3 engines | CMS101608 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete Arm with Ball Joint | View on Amazon |
| MEVOTECH Fits: all 2021 I3 engines | CMS101609 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeComplete 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.
8 Control Arm parts are listed for the 2021 BMW I3, from SUSPENSIA, DELPHI, DORMAN and 1 other brand. SUSPENSIA X05CJ7359 carries the "Popular" badge. All of them fit every engine offered in the 2021 I3.
Listed part numbers: SUSPENSIA X05CJ7359, SUSPENSIA X05CJ7358 and DELPHI TC4478, plus the other parts above.
Control Arm Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Fits: all 2021 I3 engines | HWN0119 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Lower Outer16x1.5mm | 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 Fits: all 2021 I3 engines | RH4387 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearTo 12/20 | View on Amazon |
| ARNOTT Fits: all 2021 I3 engines | RH3718 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Front | View on Amazon |
| FCS Fits: all 2021 I3 engines | HS008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear | View on Amazon |
| MONROE Fits: all 2021 I3 engines | HS10203 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
4 Ride Height Sensor parts are listed for the 2021 BMW I3, from ARNOTT, FCS and MONROE. All of them fit every engine offered in the 2021 I3.
This group includes ARNOTT RH4387, ARNOTT RH3718 and FCS HS008 and the remaining parts above.
Shock / Strut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BILSTEIN Fits: all 2021 I3 engines | 22240064 | 🇺🇸 US 🇨🇦 CA | B4 OE Replacement | View on Amazon |
| BILSTEIN Fits: all 2021 I3 engines | 22240057 | 🇺🇸 US 🇨🇦 CA | 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 both parts for the 2021 BMW I3. All of them fit every engine offered in the 2021 I3.
Listed part numbers: BILSTEIN 22240064 and BILSTEIN 22240057.
Shock / Strut Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SACHS Fits: all 2021 I3 engines | 803245 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| SACHS Fits: all 2021 I3 engines | 803246 | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
| SACHS Fits: all 2021 I3 engines | 803300 | 🇺🇸 US 🇨🇦 CA | 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.
3 Shock / Strut Mount parts for the 2021 BMW I3 come from SACHS. Every part fits both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS.
Part numbers include SACHS 803245, SACHS 803246 and SACHS 803300.
Sway Bar Link
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 I3 engines | 541805 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| DORMAN Fits: all 2021 I3 engines | 541806 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
| MOOG Fits: all 2021 I3 engines | K750851 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| MOOG Fits: all 2021 I3 engines | K750852 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: all 2021 I3 engines | K750851 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| ULTRA-POWER Popular Fits: all 2021 I3 engines | K750852 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| BECK/ARNLEY Fits: all 2021 I3 engines | 1018346 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front LeftEND LINK | View on Amazon |
| BECK/ARNLEY Fits: all 2021 I3 engines | 1018347 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right | 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.
8 Sway Bar Link parts are listed for the 2021 BMW I3, from DORMAN, MOOG, ULTRA-POWER and 1 other brand. ULTRA-POWER K750851 carries the "Popular" badge. All of them fit every engine offered in the 2021 I3.
The Daily Driver section lists 4 options from DORMAN and MOOG — grouped for everyday commuting duty. DORMAN 541805 is listed in this group.
In the Economy grade, ULTRA-POWER and BECK/ARNLEY supply 4 parts: the catalog's value-priced group. A representative part number is ULTRA-POWER K750851.
This group includes ULTRA-POWER K750851, DORMAN 541805 and DORMAN 541806 and the remaining parts above.
Buying Suspension Parts for a 2021 BMW I3
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- You do not need to pick an engine: every suspension part on this page fits both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS.
- 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 I3?
Our catalog currently lists 26 suspension parts for the 2021 BMW I3 across 6 subcategories and 13 brands, covering both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS. Each part is matched to the engine(s) it fits.
Do suspension parts differ between 2021 BMW I3 engines?
No. On this page every suspension part fits both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of suspension problems on a 2021 BMW I3?
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 I3 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 I3?
Every part on this page already fits both the 647cc L2 ELECTRIC and the 647cc L2 ELECTRIC/GAS. 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 I3
Suspension Parts for Other BMW I3 Years
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