62 Drivetrain parts are listed for the 2018 BMW 230I, in 12 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 drivetrain system on the 2018 BMW 230I moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (27 parts), CV Joint Boot (6 parts) and Drive Shaft (6 parts). The other 9 part types cover the remaining 23 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2018 BMW 230I.
The most listed brands for 2018 BMW 230I drivetrain parts are TOP NOTCH (8 parts), GSP (8 parts) and TRAKMOTIVE (8 parts), plus 16 more brands. Quality grades include Standard Replacement, Economy and Premium.
11 parts on this 2018 BMW 230I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TOP NOTCH TN10036PR (CV Axle) and REIN BKN0116 (CV Joint Boot). Click any part number to see every vehicle that part fits.
Axle Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWB1067 | 🇺🇸 US 🇨🇦 CA | Front230i xDrive | View on Amazon |
This table covers the Axle bolts.
This group shows a single part: REIN HWB1067.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 12021750 | 🇺🇸 US 🇨🇦 CA | Rear230i Base Model | View on Amazon |
| TIMKEN | SL260472 | 🇺🇸 US 🇨🇦 CA | Rear230i Base Model | View on Amazon |
| TIMKEN | SL260162 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| TIMKEN | SL260528 | 🇺🇸 US 🇨🇦 CA | Rear230i xDrive | View on Amazon |
This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Axle Shaft Seal parts for the 2018 BMW 230I come from 2 brands — TIMKEN and AJUSA.
Listed part numbers: AJUSA 12021750, TIMKEN SL260472 and TIMKEN SL260162, plus the other parts above.
CV Axle
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TOP NOTCH Popular | TN10036PR | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
| GSP | PR72027K | 🇺🇸 US 🇨🇦 CA | Performance Revolution | View on Amazon |
| TOP NOTCH | TN10024PR | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular | BM8361 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| TOP NOTCH Popular | TN10035 | 🇺🇸 US 🇨🇦 CA | Front Left230i xDrive | View on Amazon |
| TOP NOTCH Popular | TN10036 | 🇺🇸 US 🇨🇦 CA | Front Right230i xDrive | View on Amazon |
| TOP NOTCH Popular | TN10028 | 🇺🇸 US 🇨🇦 CA | Rear Right230i Base Model | View on Amazon |
| TRAKMOTIVE Popular | BM8164 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| GKN | 306358 | 🇺🇸 US 🇨🇦 CA | Front Left230i xDrive | View on Amazon |
| GKN | 306359 | 🇺🇸 US 🇨🇦 CA | Front Right230i xDrive | View on Amazon |
| GSP | NCV27043 | 🇺🇸 US 🇨🇦 CA | Front Left230i xDrive | View on Amazon |
| GSP | NCV27062 | 🇺🇸 US 🇨🇦 CA | Rear LeftCoupe | View on Amazon |
| GSP | NCV27044 | 🇺🇸 US 🇨🇦 CA | Front Right230i xDrive | View on Amazon |
| GSP | NCV27030 | 🇺🇸 US 🇨🇦 CA | Rear LeftConvertible | View on Amazon |
| GSP | NCV27031 | 🇺🇸 US 🇨🇦 CA | Rear Right230i Base Model | View on Amazon |
| GSP | NCV27028 | 🇺🇸 US 🇨🇦 CA | Rear Left230i xDrive | View on Amazon |
| GSP | NCV27027 | 🇺🇸 US 🇨🇦 CA | Rear Right230i xDrive | View on Amazon |
| TOP NOTCH | TN10024 | 🇺🇸 US 🇨🇦 CA | Rear Right230i xDrive | View on Amazon |
| TOP NOTCH | TN10025 | 🇺🇸 US 🇨🇦 CA | Rear Left230i xDrive | View on Amazon |
| TOP NOTCH | TN10027 | 🇺🇸 US 🇨🇦 CA | Rear LeftConvertible | View on Amazon |
| TRAKMOTIVE | BM8166 | 🇺🇸 US 🇨🇦 CA | AAR Joint Design | View on Amazon |
| TRAKMOTIVE | BM8226 | 🇺🇸 US 🇨🇦 CA | Rear Right230i xDrive | View on Amazon |
| TRAKMOTIVE | BM8227 | 🇺🇸 US 🇨🇦 CA | Rear Left230i xDrive | View on Amazon |
| TRAKMOTIVE | BM86039 | 🇺🇸 US 🇨🇦 CA | Rear LeftRWD | View on Amazon |
| TRAKMOTIVE | BM86040 | 🇺🇸 US 🇨🇦 CA | Rear RightRWD | View on Amazon |
| TRAKMOTIVE | BM8177 | 🇺🇸 US 🇨🇦 CA | Rear RightManual trans. | View on Amazon |
| TRAKMOTIVE | BM8178 | 🇺🇸 US 🇨🇦 CA | Rear LeftManual trans. | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
27 CV Axle parts for the 2018 BMW 230I come from 5 brands — TOP NOTCH, GSP, TRAKMOTIVE and 2 other brands. The "Popular" part is TOP NOTCH TN10036PR. Premium and Standard Replacement are all represented, and Standard Replacement alone accounts for 24 parts.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Popular | BKN0116 | 🇺🇸 US 🇨🇦 CA | Front Inner230i xDrive | View on Amazon |
| REIN Popular | BKN0099R | 🇺🇸 US 🇨🇦 CA | Front Outer230i xDrive | View on Amazon |
| BECK/ARNLEY | 1032966 | 🇺🇸 US 🇨🇦 CA | Front Inner230i xDrive | View on Amazon |
| BECK/ARNLEY | 1032804 | 🇺🇸 US 🇨🇦 CA | Front Outer230i xDrive | View on Amazon |
| GKN | 305846 | 🇺🇸 US 🇨🇦 CA | Thermoplastic ElastomerThermosplastic Elastomer (TPE) | View on Amazon |
| GKN | 306058 | 🇺🇸 US 🇨🇦 CA | Thermoplastic ElastomerThermosplastic Elastomer (TPE) | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
6 CV Joint Boot parts for the 2018 BMW 230I come from 3 brands — REIN, BECK/ARNLEY and GKN. The "Popular" part is REIN BKN0116.
This group includes REIN BKN0116, REIN BKN0099R and BECK/ARNLEY 1032966 and the remaining parts above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 16031150 | 🇺🇸 US 🇨🇦 CA | Front230i xDrive | View on Amazon |
This table covers the gaskets that seal the Differential Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
This group shows a single part: AJUSA 16031150.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWP0065 | 🇺🇸 US 🇨🇦 CA | Fits Rear DifferentialM22X1.5, Steel | View on Amazon |
| REIN | HWU0065 | 🇺🇸 US 🇨🇦 CA | Fits Rear DifferentialM22X1.5, Aluminum | View on Amazon |
This table covers the Differential Fill drain plugs.
2 Differential Fill / Drain Plug parts for the 2018 BMW 230I come from REIN.
Part numbers include REIN HWP0065 and REIN HWU0065.
Differential Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VNE | 41000120 | 🇺🇸 US 🇨🇦 CA | Rear LeftRubber Bushing | View on Amazon |
This table covers the Differential mounts. 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.
One part is listed for the 2018 BMW 230I — VNE 41000120.
Differential Pinion Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VNE | 4009141 | 🇺🇸 US 🇨🇦 CA | 230i Base ModelTo transmission | View on Amazon |
This table covers the flanges that connect the driveshaft to the differential pinion.
This group shows a single part: VNE 4009141.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 12005350 | 🇺🇸 US 🇨🇦 CA | Rear230i Base Model | View on Amazon |
| AJUSA | 12015650 | 🇺🇸 US 🇨🇦 CA | Front230i xDrive | View on Amazon |
| TIMKEN | 1992 | 🇺🇸 US 🇨🇦 CA | Rear230i xDrive | View on Amazon |
| TIMKEN | SL260487 | 🇺🇸 US 🇨🇦 CA | Front230i xDrive | View on Amazon |
This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Differential Pinion Seal parts for the 2018 BMW 230I come from 2 brands — AJUSA and TIMKEN.
This group includes AJUSA 12005350, AJUSA 12015650 and TIMKEN 1992 and the remaining parts above.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 761160 | 🇺🇸 US 🇨🇦 CA | Material: ACM (Polyacrylate)Radial Shaft Seal Design: AS | View on Amazon |
| ELRING | B16790 | 🇺🇸 US 🇨🇦 CA | Material: AEM (Ethylene Acrylate Rubber)Swirl Type: Alternating Twist | View on Amazon |
| ELRING | B46610 | 🇺🇸 US 🇨🇦 CA | Material: ACM (Polyacrylate)Radial Shaft Seal Design: AwithBS2 | View on Amazon |
| VAICO | V200020 | 🇺🇸 US 🇨🇦 CA | Rear230i xDrive | View on Amazon |
This table covers the seals at the Differential. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
4 Differential Seal parts are listed for the 2018 BMW 230I, from ELRING and VAICO.
Part numbers include ELRING 761160, ELRING B16790 and ELRING B46610, among others listed above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SK938277 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| WJB / INMOTION PARTS Popular | WDS38277 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| CARDONE | 659005 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| DORMAN | 938277 | 🇺🇸 US 🇨🇦 CA | Length: 28" | View on Amazon |
| DORMAN | 966423 | 🇺🇸 US 🇨🇦 CA | Length: 44.25" | View on Amazon |
| DORMAN | 986561 | 🇺🇸 US 🇨🇦 CA | Length: 57.375" | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
6 Drive Shaft parts are listed for the 2018 BMW 230I, from DORMAN, SKP, WJB / INMOTION PARTS and 1 other brand. SKP SK938277 carries the "Popular" badge.
This group includes SKP SK938277, WJB / INMOTION PARTS WDS38277 and CARDONE 659005 and the remaining parts above.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Popular | BEM0039P | 🇺🇸 US 🇨🇦 CA | 55mm O.D., 30mm I.D. | View on Amazon |
| ÜRO PARTS | 26128615621 | 🇺🇸 US 🇨🇦 CA | Rear230i xDrive | View on Amazon |
| WJB / INMOTION PARTS | RB60062RS | 🇺🇸 US 🇨🇦 CA | with 30mm Bearing Inside Diameter | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NB106CC | 🇺🇸 US 🇨🇦 CA | with 1.18 IN Bearing Inside Diameter | View on Amazon |
| NATIONAL | 106CC | 🇺🇸 US 🇨🇦 CA | with 1.1811 IN Bearing Inside Diameter | View on Amazon |
This table covers the Drive Shaft Center Support bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
5 Drive Shaft Center Support Bearing parts are listed for the 2018 BMW 230I, from REIN, ÜRO PARTS, WJB / INMOTION PARTS and 2 other brands. REIN BEM0039P carries the "Popular" badge.
In the Economy grade, REIN, ÜRO PARTS and WJB / INMOTION PARTS supply 3 parts: the catalog's value-priced group. A representative part number is REIN BEM0039P.
The Standard Replacement section lists 2 options from BCA and NATIONAL — built to original-equipment specification. BCA NB106CC is listed in this group.
This group includes REIN BEM0039P, ÜRO PARTS 26128615621 and WJB / INMOTION PARTS RB60062RS and the remaining parts above.
Buying Drivetrain Parts for a 2018 BMW 230I
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- 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 the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: CV Axle and CV Joint Boot .
Frequently Asked Questions
How many drivetrain parts fit the 2018 BMW 230I?
Our catalog currently lists 62 drivetrain parts for the 2018 BMW 230I across 12 subcategories and 19 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2018 BMW 230I?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. 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 the differential or transfer-case fluid with any axle or seal job while everything is already open.
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 2018 BMW 230I 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 2018 BMW 230I?
Every part on this page is matched to the 2.0L L4 Turbocharged engine. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 BMW 230I
Drivetrain Parts for Other BMW 230I Years
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