2.0L DOHC Engine Complete Assembly for 2020-2022 BMW & MINI
Product Notes Read before buying
This engine fits the 228 horsepower versions of the BMW X1, X2, and 228i Gran Coupe (trims sDrive28i and xDrive28i). For Mini Cooper, it fits John Cooper Works (JCW) models only. It will not fit higher performance M35i models or other trim levels.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Base | Sedan | 2021 - 2022 | L4 2.0L Turbo | FWD | Automatic | engine_size: include 2.0L; aspiration: include Turbocharged; fuel_type: include GAS; engine_config: include L4 [inferred] |
| 2020 |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Base | Sedan | 2020 - 2021 | L4 2.0L Turbo | AWD | Automatic |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| sDrive28i | SUV | 2020 - 2022 | L4 2.0L Turbo | FWD | Automatic |
| xDrive28i | SUV | 2020 - 2022 | L4 2.0L Turbo | AWD | Automatic |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| sDrive28i | SUV | 2020 - 2022 | L4 2.0L Turbo | FWD | Automatic |
| xDrive28i | SUV | 2020 - 2022 | L4 2.0L Turbo | AWD | Automatic |
| 2021 |
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| John Cooper Works | Convertible | 2020 | L4 2.0L Turbo | FWD | Automatic |
| John Cooper Works | Hatchback | 2020 | L4 2.0L Turbo | FWD | Automatic |
| John Cooper Works Hot Chili | Convertible | 2020 | L4 2.0L Turbo | FWD | Automatic |
| John Cooper Works Hot Chili | Hatchback | 2020 | L4 2.0L Turbo | FWD | Automatic |
Know This Engine Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this engine family:
A quick look at your own vehicle makes sure the right engine shows up:
- Verify the VIN using an online decoder to confirm the engine code is B46D, B46A20O1, or B48A20A.
- Confirm the engine is mounted transversely (sideways, with the plastic cover running left-to-right).
- Verify the vehicle is a '28i' or '28iX' model (228 HP) and not a higher-output 'M35i' model.
- Identify if the vehicle is FWD (sDrive) or AWD (xDrive/ALL4) to prepare for oil pan transfer if necessary.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- BMW Timing Tool Kit (OEM 2 358 122)
- Fuel Injector Puller/Installer (OEM 83 30 2 358 417)
- ISTA/D or Equivalent Diagnostic Scan Tool
- Engine support brace
Budget for these consumables at install:
- Synthetic engine oil meeting BMW Longlife-17 FE+ or Longlife-14 FE+ (0W-20)
- New OEM oil filter
- BMW HT-12 (Green) or G48 (Blue) coolant mixed 50/50 with distilled water
- New OEM high-power spark plugs (NGK SILZKGR8E8S / BMW 12120040551)
- Intake manifold gaskets
- Exhaust manifold and turbocharger gaskets
- Turbocharger oil feed and return line gaskets/O-rings
- Direct injector Teflon seals and crush washers (if transferring original injectors)
- New torque-to-yield (TTY) bolts for engine mounts, subframe, and exhaust downpipe V-band clamp
What your vehicle’s computers will need after the swap:
What’s involved: Fuel Injector Coding (IMA Calibration), Valvetronic Limit Learning, Coolant System Bleeding Procedure, and DME/Immobilizer synchronization.
A high-level professional scan tool or BMW ISTA software is required to perform injector coding, Valvetronic limit learning, and coolant bleeding. While a dealer tool is the most certain method, high-end aftermarket bi-directional tools can perform these procedures.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- The plastic coolant vent line running from the cylinder head to the expansion tank is extremely fragile and will snap if touched; replace it proactively.
- Direct injector Teflon seals must be resized using the official BMW tool if transferring injectors; manual installation will cause high-pressure fuel leaks.
- Pre-emptively replace the plastic oil filter housing with a brand-new unit while the engine is out of the vehicle.
- The downpipe V-band clamp is difficult to align in the tight transverse engine bay; misalignment causes exhaust leaks and oxygen sensor codes.
- The oil circuit must be primed before starting the engine for the first time using ISTA to prevent immediate bearing damage.
Easy to get right once you know them:
- Buying this transverse engine for a longitudinal rear-wheel-drive BMW model (like a 330i, 530i, X3, or Z4).
- Assuming the turbocharger is included with this specific listing.
- Attempting to reuse the brittle plastic cylinder head coolant vent line.
- Skipping the mandatory fuel injector IMA calibration in the DME.
- Mixing generic coolant formulations with BMW's specific HT-12/G48 formula.
- Reusing single-use torque-to-yield (TTY) aluminum bolts on engine mounts and subframes.
Not issues with the units on this page — the manufacturer documented these for every engine of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Replace the plastic housing with a brand-new unit while the engine is out of the vehicle.
🔎 Recommended at install: Replace the brittle plastic line with a brand-new line (BMW Part # 17129845173).
🔎 Recommended at install: BMW extended warranty coverage to 15 years / 150,000 miles.
🔎 Recommended at install: Replace the degraded gasket and O-ring.
🔎 Recommended at install: Inspect and replace the starter relay with the updated design.
Researched from factory recalls, TSBs and OEM service data (reference unit 300-10321-4980286). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2020-2022 BMW X1, X2, 228i & MINI Cooper 2.0L B46/B48 Engine: Problems, Identification, and Used Replacement
Identify the transverse B46/B48 engine, learn what causes catastrophic failures, and discover when a used OEM replacement is the smartest fix.
Read Full Guide →Related Trouble Codes (OBD-II)
1 matching guideIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
BMW: 11002469472, 11002469473, 11005A077D9
Fits Years: 2020 2021 2022
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This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
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