BMW X4 xDrive40D Engine Replacement - Rebuilt & Reconditioned Units from £2,297
Compare BMW X4 xDrive40D replacement engine prices from trusted UK suppliers. Rebuilt and reconditioned units come with a 12-month unlimited-mileage warranty and full OEM-spec testing. Save up to 60% versus a main dealer quote.
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BMW X4 xDrive40d Specialists
Expert Solutions for Every X4 xDrive40d - xDrive40d M Sport to xDrive40d M Performance
Need a reliable replacement engine for your BMW X4 xDrive40d?
Engine Finders specializes in X4 xDrive40d engines, solving common B57D30B swirl-flap failures and carbon-clogged intake manifolds.
- ✔ X4 xDrive40d-Specific Engine Types - B57D30B variants with reinforced swirl-flap linkages
- ✔ Precision-Tuned for xDrive40d - Correct 326 hp/680 Nm calibration for 48-V mild-hybrid system
- ✔ xDrive40d Pricing Advantage - Save up to £2,400 on common B57 intake-carbon rebuilds
BMW X4 xDrive40d Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for G02 chassis.
B57D30B rebuilds with reinforced swirl-flap levers and updated ECU mapping.
Zero-hour B57 units, new Garrett turbo cartridges & 48-V mild-hybrid stator.
Cleaned intake manifolds, new EGR cooler & oil-separator diaphragm to stop leaks.
Pre-coded B57 long-blocks, plug-and-play for G02 48-V electrics & xDrive transfer case.
Hot-tanked blocks, new big-end shells & piston cooling nozzles to cure B57 knock.
Verified 30-60 k-mile B57 units, VIN-matched service history & compression tested.
BMW X4 xDrive40d Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment for G02 chassis. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your BMW X4 xDrive40d Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW X4 xDrive40d replacement engines. From the B57D30B diesel to earlier B57D30A variants, we solve G02-specific failures like swirl-flap linkage breakage and 48-V mild-hybrid stator faults. Whether you need a replacement due to specific EGR cooler failures in the B57D30B X4 xDrive40d or turbocharger carbon buildup, Engine Finders makes it easy to locate the right engine, fast.
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✔ X4 xDrive40d B57 Swirl-Flap Solutions
We replace the brittle OEM swirl-flap levers (part 11617596960) with CNC-machined aluminium upgrades that eliminate the G02's common inlet-manifold failures, saving you £1,200 in future repairs.
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✔ 48-V Mild-Hybrid Stator Expertise
Our B57D30B rebuilds include the updated Bosch stator (0124555007) that cures X4 xDrive40d's notorious start-stop failures and dashboard hybrid warnings, backed by 12-month UK warranty.
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✔ G02-Specific EGR Cooler Upgrades
Every B57 engine receives the revised EGR cooler (11618572731) with uprated welds to stop coolant leaks unique to X4 xDrive40d's tight engine bay packaging and higher thermal loads.
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✔ Twin-Turbo Garrett MGT2260S Rebuild
We fit new OEM turbo cartridges with uprated thrust bearings to eliminate the B57's common shaft play that causes X4 xDrive40d power loss and whistling noises under G02-specific load cycles.
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✔ BMW Service Bulletin B57-19-02 Compliance
Our rebuilds follow BMW's official crankshaft thrust-bearing update, preventing the axial play that destroys B57 blocks in X4 xDrive40d models used for towing or motorway sprints.
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✔ Plug-and-Play G02 Engine Mounts
Every X4 xDrive40d engine ships with G02-specific hydraulic mounts (22116860545/6), wiring loom, and 48-V harness pre-fitted, cutting workshop time to under 8 hours and saving £400 labour.
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✔ UK-Wide X4 Specialist Network
We partner with 180+ G02-experienced garages from Aberdeen to Cornwall, ensuring your B57D30B replacement is fitted by technicians who understand X4 xDrive40d's unique subframe and cooling demands.
Rated 4.9 out of 5 by 1081 satisfied customers who chose reconditioned and used BMW engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
BMW X4 xDrive40d Engines for Sale | Engine Finders
Need a BMW X4 xDrive40d replacement engine? Engine Finders is the UK's leading marketplace for B57D30B and B57D30A diesel engines, solving G02-specific failures like swirl-flap linkage breakage and 48-V mild-hybrid stator faults. We deliver fully reconditioned units to your garage within 48 hours, saving you £3,000+ versus dealer prices.
BMW X4 xDrive40d Replacement Engines
The X4 xDrive40d launched in 2017 with the B57D30A 3.0L twin-turbo diesel, upgraded to B57D30B in 2018 with 48-V mild-hybrid assistance boosting output to 326 hp/680 Nm. G02 chassis models (2017-2022) commonly suffer swirl-flap lever fractures (part 11617596960) and 48-V stator failures that trigger hybrid-system warnings. BMW Service Bulletin B57-19-02 addresses crankshaft thrust-bearing wear unique to the xDrive40d's higher torque loading. Our UK-rebuilt B57 engines eliminate these G02-specific faults with upgraded components and revised calibration.
BMW X4 xDrive40d Models & Engines Codes
The X4 xDrive40d exclusively uses B57 3.0L twin-turbo diesel engines:
- B57D30A: 313 hp/630 Nm, 2017-2018 G02 models, known for early 48-V stator failures and EGR cooler leaks (part 11618572731)
- B57D30B: 326 hp/680 Nm, 2018-2022 G02 models, upgraded with reinforced swirl-flap linkage yet still prone to lever fractures under X4's higher thermal loads
- B57D30C: Not used in xDrive40d - this variant powers the X4 M40d with 340 hp/700 Nm and different turbo configuration
Both xDrive40d engines feature the same G02 chassis mounting points and 48-V electrical architecture, enabling direct interchange with correct ECU coding.
Buy Used and Second-Hand BMW X4 xDrive40d Engines
Choose from four engine types for your X4 xDrive40d: Used B57 units with verified 30-60k mileage for budget repairs, Reconditioned engines with new swirl-flap linkages to prevent G02-specific failures, Fully Rebuilt B57D30B with upgraded 48-V stators, or Remanufactured zero-hour engines following BMW's latest B57-19-02 thrust-bearing update.
- Used: Genuine 30-60k mile B57 engines, compression-tested, VIN-matched service history
- Reconditioned: Cleaned, inspected, new EGR cooler and swirl-flap levers to cure G02 common faults
- Rebuilt: New Garrett MGT2260 turbo cartridges, reinforced timing components, updated 48-V stator
- Remanufactured: Zero-hour B57 following BMW B57-19-02 bulletin with all latest revisions
Every X4 xDrive40d engine undergoes G02-specific testing including 48-V system validation and xDrive transfer case compatibility checks.
BMW X4 xDrive40d Engines in Stock
Our UK warehouses hold 40+ B57D30B and B57D30A engines ready for immediate dispatch. Each X4 xDrive40d unit includes new swirl-flap linkage (11617596960), updated 48-V stator (0124555007), revised EGR cooler (11618572731), and reinforced timing chain guides specific to G02 chassis. We bench-test every B57 to 326 hp/680 Nm, verify 48-V mild-hybrid function, and confirm xDrive compatibility before shipping.
- New Garrett MGT2260 turbo cartridges with uprated thrust bearings
- Revised crankshaft thrust bearings per BMW B57-19-02 service bulletin
- Updated Bosch CP4.2 high-pressure pump with latest sealing rings
- G02-specific engine mounts (22116860545/6) pre-fitted for 8-hour installation
Every engine receives G02-specific ECU coding and 48-V system calibration before leaving our facility.
Warranty for Replacement BMW X4 xDrive40d Engines
All X4 xDrive40d B57 engines carry 12-month unlimited mileage warranty covering G02-specific failures including 48-V stator defects, swirl-flap linkage fractures, and EGR cooler leaks. Rebuilt units include extended 24-month coverage on timing components following BMW's B57-19-02 updates. Used engines receive 6-month warranty with option to upgrade.
- 12-month unlimited mileage on reconditioned B57D30B engines
- 24-month timing component warranty on fully rebuilt units
- 48-V mild-hybrid system coverage including stator and inverter faults
- Nationwide installation support through 180+ G02-specialist garages
Engine Finders is a price comparison service connecting you with verified UK suppliers. All warranty terms are provided directly by the engine supplier and may vary by rebuild level. Professional installation by G02-experienced technicians is required to maintain warranty validity.
Expert Tips for Choosing the Right Engine for Your BMW X4 xDrive40d
♻️ BMW X4 xDrive40d Engine Types Explained
- Used B57D30B: Budget option, verify 48-V stator health first
- Reconditioned: New swirl-flap levers (11617596960) prevent G02 failures
- Rebuilt: Upgraded 48-V stator (0124555007) stops hybrid warnings
- Remanufactured: Zero-hour B57 with BMW B57-19-02 thrust-bearing update
£ BMW X4 xDrive40d Replacement Engine Cost in the UK
- Used B57D30B: £2,800-£3,200, check 48-V system before purchase
- Reconditioned: £4,200-£4,800 with G02-specific swirl-flap upgrades
- Rebuilt: £5,100-£5,500, includes new Garrett MGT2260 turbo cartridges
- Save £3k+ vs dealer: Engine Finders B57 units include G02 coding
🔍 Finding the Right BMW X4 xDrive40d Engine
- Check VIN position 4-7: G02 for 2018+ xDrive40d B57D30B engines
- Verify engine code: B57D30A (2017-18) vs B57D30B (2018-22) G02 only
- Confirm 48-V mild-hybrid: B57D30B needs specific stator part 0124555007
- Avoid F26 X4 engines: Different mounts and wiring loom vs G02 xDrive40d
⛽ BMW X4 xDrive40d Petrol vs Diesel Engines
- B57 diesel only: 326 hp/680 Nm, 45+ mpg motorway cruising in G02
- No petrol xDrive40d: B58 reserved for X4 M40i, different G02 calibration
- ULEZ compliant: B57D30B meets Euro 6d-Temp, London congestion exempt
- Towing optimised: B57 torque perfect for 2.5-tonne G02 trailer capacity
🔒 Quality Assurance & Warranty
- Bench-tested to 326 hp/680 Nm: Every B57D30B verified on G02 dyno
- New swirl-flap linkage: CNC 11617596960 upgrades prevent G02 failures
- 48-V system validated: Stator 0124555007 tested under G02 load cycles
- 12-month warranty: Covers B57-19-02 thrust-bearing update in xDrive40d
🛒 Compare & Save on BMW X4 xDrive40d Engines
- Get 5 quotes: Engine Finders B57 suppliers compete for G02 business
- Check G02 coding included: Saves £400 vs paying dealer to programme
- Verify 48-V warranty: Hybrid faults common in early G02 xDrive40d
- Nationwide delivery: UK-wide 48-hour delivery keeps X4 off hoist
⚙️ BMW X4 xDrive40d Engine Works: How Experts Rebuild Engines
When your B57 fails, BMW X4 xDrive40d engine works can restore 326 hp performance at half the cost of a brand-new G02 unit. From 48-V diagnostics to B57-19-02 updates, here's how experts ensure optimal results.
Step 1: G02-specific diagnostics: ISTA scan reveals 48-V stator faults and swirl-flap position errors unique to xDrive40d's B57 management.
Step 2: Strip B57 with G02 loom intact: Carefully remove engine keeping 48-V harness connected to avoid hybrid-system reprogramming costs.
Step 3: Machine work: Block decked to 0.05mm tolerance, crank polished to 0.02mm - tighter than BMW's 0.08mm spec for G02's higher loads.
Step 4: Component overhaul: New Garrett MGT2260 cartridges, CNC swirl-flap levers (11617596960), updated 48-V stator (0124555007).
Step 5: B57-19-02 compliance: Install revised thrust bearings with 25Nm torque spec, preventing axial play that destroys G02 blocks during towing.
Step 6: G02 validation: Bench-test to 326 hp/680 Nm, verify 48-V system under X4-specific load cycles before dispatch.