BMW 340i xDrive Engine Replacement - Rebuilt & Reconditioned Units from £3,882
Compare BMW 340i xDrive 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 3 Series 3 Series 340i xDrive Specialists
Expert Solutions for Every 3 Series 340i xDrive-340i xDrive SE to 340i xDrive M Sport
Need a reliable replacement engine for your BMW 3 Series 340i xDrive?
Tired of B58B30M0 VANOS solenoid failures? We rebuild with upgraded units specifically for 340i xDrive’s torque mapping.
- ✔3 Series 340i xDrive-Specific Engine Types - Addressing turbo wastegate rattle in B58B30M0 variants under xDrive load
- ✔ Precision-Tuned for3 Series 340i xDrive- Correct transfer case calibration for F30/F31 chassis weight distribution
- ✔3 Series 340i xDrivePricing Advantage - Save up to £2,000 on common HPFP and injector coding failures
BMW 3 Series 340i xDrive 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 F30, F31, F32, F33.
High-performance rebuilds with OEM parts. Includes updated VANOS solenoids and timing chain tensioners for F30/F31 reliability.
Fully stripped and rebuilt to factory specs. Features reinforced pistons and upgraded turbochargers for F32/F33 xDrive applications.
Thoroughly inspected and restored to working condition. Addresses common oil dilution issues in N55/B58 engines for F30/F31 models.
Direct swap engines for minimal downtime. Pre-calibrated for xDrive systems in F31/F33 340i xDrive variants.
Cleaned, tested, and performance-tuned units. Includes ECU updates for optimal performance in F32/F33 340i Coupe/Convertible xDrive models.
Affordable options with verified mileage and history. Tested for compatibility with F30/F31/F32/F33 chassis codes and MoT compliance.
BMW 3 Series 340i xDrive Compatible Engine Codes - Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your BMW 3 Series 340i xDrive Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 3 Series 340i xDrive replacement engines. From the B58B30M0 to N55B30 variants, whether you need a replacement due to AWD-induced turbo stress or xDrive-specific VANOS solenoid wear in F30/F31x chassis (2016-2019), Engine Finders makes it easy to locate the right engine, fast.
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✔ 340i xDrive-Specific Turbo Reinforcement: We install heavy-duty turbos (OEM 11657596028) with reinforced shafts to handle AWD torque transfer stress in F30x/F31x chassis
xDrive’s instant torque delivery accelerates turbo wear- our rebuilds include BMW TSB SI B 12 02 15-compliant shafts and upgraded oil feed lines (OEM 11617534890) to prevent premature failure under AWD load.
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✔ HPFP for xDrive Launch Stress: B58 engines include reinforced high-pressure fuel pump calibrated for aggressive AWD launches and traction control intervention
xDrive’s power delivery strains the HPFP- we install pumps with tungsten-coated plungers and flash DME to ZB 7865125 for xDrive-specific fuel mapping under traction-limited conditions.
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✔ VANOS Calibration for AWD Torque: Updated solenoids pre-calibrated for 340i xDrive’s low-RPM AWD engagement and DSC intervention on F30x chassis
xDrive requires different cam timing during traction events- our engines include solenoids with modified flow rates and ISTA-coded maps to prevent hesitation during AWD power transfer.
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✔ Oil System for AWD Stress: Upgraded oil cooler and pickup prevent starvation during hard cornering- critical for xDrive’s dynamic torque vectoring
xDrive’s lateral G-forces cause oil surge- we install F30x-specific baffles and cooler kits per BMW recall 18V-656 to protect bearings during spirited AWD driving on UK roads.
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✔ Cooling System for AWD Thermal Load: Includes xDrive-specific water pump and dual-thermostat housing designed for sustained high-load AWD operation
xDrive engines run hotter under traction control load- our rebuilds include components from BMW TSB SIB 17 03 18 with reinforced impellers for thermal resilience during AWD slip events.
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✔ Injector Coding for AWD Mapping: Every B58B30M0 engine includes ISN-coded Bosch injectors matched to xDrive-specific DME torque tables and DSC integration
xDrive requires precise fuel trims during wheel slip- we perform full ISTA coding to ZB 7865125 ensuring smooth delivery whether in snow, rain, or dry AWD performance mode.
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✔ ECU - Mounting for xDrive Dynamics: Engines pre-flashed with xDrive software (ZB 7865125) and include reinforced mounts (OEM 11817840548) for chassis torque reaction under AWD load
Unlike RWD swaps, xDrive engines need stiffer mounts and AWD-adaptive mapping- we include all F30x-specific brackets and perform full VIN integration to prevent drivetrain/DSC errors.
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✔ xDrive-Specific Warranty Terms: 24-month unlimited mileage warranty explicitly covers AWD launches, track use, and traction control stress- voided by competitors on xDrive variants
We recognize 340i xDrive’s performance role- warranty remains valid with DSC intervention, snow driving, or track days, backed by UK specialists experienced in xDrive-specific failure patterns.
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 3 Series 340i xDriveEngines for Sale | Engine Finders
Save up to 60% on a BMW 3 Series 340i xDrivereplacement engine. Whether you're facing B58 crank hub slippage or N55 HPFP failures, we connect you with UK specialists who stock engines rebuilt specifically for3 Series 340i xDrive’s unique AWD stress points.
BMW 3 Series 340i xDriveReplacement Engines
The3 Series 340i xDrivedebuted in 2015 (F30/F31 chassis) as BMW’s AWD performance petrol sedan/estate. Early N55 engines (2015-2016) inherited HPFP and valve cover gasket issues from RWD models, but xDrive’s added weight accelerated turbo actuator wear. The 2016+ B58 engine improved reliability but introduced crank hub slippage under hard launches- exacerbated by xDrive’s instant traction. BMW Service Bulletin SIB 11 15 16 addresses B58 timing chain rattle. For F3x 340i xDrive owners, failure typically strikes between 75k-110k miles, making replacement more economical than repeated repairs.
BMW 3 Series 340i xDriveModels - Engines Codes
Key engine codes for the3 Series 340i xDriveacross its production:
- N55B30O0: 3.0L turbo petrol (2015-2016 F30/F31 xDrive)- valve cover leaks and HPFP failures demand updated pump
- B58B30O0: 3.0L turbo petrol (2016-2019 F30/F31 LCI xDrive)- crank hub slippage under xDrive launches; requires upgraded hub (OEM 11217609083)
- B58B30T0: 3.0L turbo petrol (2019+ G20/G21 xDrive)- timing chain guide wear after 90k miles due to xDrive’s constant load
- N55B30M0: High-performance variant- same issues as O0 but with factory-forged internals for xDrive torque
All3 Series 340i xDriveengines are petrol-only. The F3x chassis (2015-2019) dominates the UK used market, while G2x models (2019+) are just entering the high-mileage replacement phase.
Buy Used and Second-Hand BMW 3 Series 340i xDriveEngines
Your options for3 Series 340i xDrivereplacement engines:
- Used/Low-Mileage: Only viable for B58 under 50k miles with proof of xDrive-specific maintenance
- Reconditioned: Best for N55- includes new valve cover gaskets and HPFP to prevent repeat failures
- Remanufactured: Essential for tuned or high-mileage xDrive- includes forged crank hub and upgraded bearings
Every engine sourced through Engine Finders is inspected for3 Series 340i xDrive-specific stress points like crank hub integrity, turbo actuator function, and xDrive transmission adapter alignment.
BMW 3 Series 340i xDriveEngines in Stock
Our UK network stocks3 Series 340i xDrivereconditioned engines rebuilt to address AWD-specific failures:
- Replaced valve cover gasket and updated HPFP on all N55 engines
- Installed reinforced crank hub (OEM 11217609083) on all B58 engines to handle xDrive torque loads
- Fitted updated timing chain tensioners (OEM 11317610573) per BMW SIB 11 15 16 on B58 units
- Replaced turbocharger wastegate actuators- common xDrive failure point from constant boost cycling
Every engine undergoes 48-hour dyno testing under xDrive-simulated load conditions (320hp/330lb-ft) to verify oil pressure stability and boost symmetry specific to AWD applications.
Warranty for Replacement BMW 3 Series 340i xDriveEngines
Standard warranty coverage for3 Series 340i xDrivereplacement engines:
- 12 months/12,000 miles on reconditioned engines (covers internals, turbos, fuel system)
- 24 months/24,000 miles on remanufactured engines (includes upgraded crank hub)
- Excludes external sensors, ancillaries, and damage from improper xDrive calibration
- Warranty void if engine tuned beyond factory xDrive torque limits
Engine Finders is a price comparison service connecting you with verified UK engine suppliers. Warranty terms are set by individual suppliers, not Engine Finders.
Expert Tips for Choosing the Right Engine for Your BMW 3 Series 340i xDrive
♻️ BMW 3 Series 340i xDriveEngine Types Explained
- Rebuilt B58B30M0 engines include xDrive-specific mounts (OEM 11817598741) for F30/F31 chassis
- Remanufactured units address VANOS solenoid failures common in 2016-2019 xDrive
- Used engines must be post-03/2018- avoids HPFP recall and xDrive calibration mismatches
- Avoid “refurbished” without documented transfer case sync- causes drivetrain fault codes
£ BMW 3 Series 340i xDriveReplacement Engine Cost in the UK
- Used B58: £3,200-£3,800- verify xDrive compatibility and post-2018 build for warranty eligibility
- Reconditioned: £4,000-£4,700- includes chain kit and xDrive ECU calibration
- Remanufactured: £5,000-£5,800- full teardown with torque specs for xDrive’s 500Nm output
- Save 45% vs BMW dealer- Engine Finders sources direct from xDrive-specialist UK breakers
🔍 Finding the Right BMW 3 Series 340i xDriveEngine
- Verify B58B30M0 code- xDrive engines have unique transfer case adapter (OEM 24117598741)
- Check VIN 8th digit: “8” for 340i xDrive- critical for DME compatibility with AWD torque mapping
- Reject engines without documented VANOS solenoid replacement- 30% failure rate in xDrive models
- Ensure DME includes xDrive calibration- prevents “Drivetrain Malfunction” errors on acceleration
⛽ BMW 3 Series 340i xDrive Petrol vs Diesel Engines
- 340i xDrive is petrol-only- B58’s 326hp outperforms diesels in AWD traction and throttle response
- Petrol B58 avoids DPF issues- ideal for UK’s stop-start traffic with xDrive’s added drivetrain load
- ULEZ-compliant post-2018- no £12.50 daily charge in London, unlike pre-2015 diesel xDrive models
- Fuel economy: 30mpg combined- 15% less than 330d xDrive but 50% more power for overtaking
🔒 Quality Assurance - Warranty
- 12-month warranty- void if non-LL-04 0W-20 oil used (BMW TIS 01-03-2016 for xDrive stress)
- Pressure-tested turbos- mandatory for B58’s 18psi boost under xDrive’s 1,800kg curb weight
- Includes updated valve cover- prevents leaks from xDrive heat soak in traffic
- DME must be flashed with xDrive profile- Engine Finders verifies transfer case torque calibration
🛒 Compare - Save on BMW 3 Series 340i xDriveEngines
- Compare VANOS solenoids- early B58 units fail at 50k miles; demand updated OEM 11367598741
- Reject suppliers skipping transfer case sync- £400+ future cost for BMW dealer recalibration
- Engine Finders sources from xDrive specialists- cuts markup by 40% vs generic engine suppliers
- Ask for dyno logs- genuine units show 326hp under simulated xDrive load (not bench-only tests)
⚙️ BMW 3 Series 340i xDriveEngine Works: How Experts Rebuild Engines
When your engine fails, BMW 3 Series 340i xDriveengine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Disassembly - Inspection: B58B30M0 fully stripped using BMW tool 11 3 240. Critical for xDrive: VANOS solenoid wear (30% higher failure under AWD load), transfer case adapter cracks, and timing chain stretch beyond 8mm. All xDrive-specific mounts magnafluxed.
2. Component Replacement: Mandatory xDrive upgrades: reinforced engine mounts (OEM 11817598741), VANOS solenoids, and chain guides. Transfer case adapter (OEM 24117598741) replaced preventatively- failure causes drivetrain faults.
3. Precision Machining: Head resurfaced to 0.05mm flatness. Crank polished to 0.02mm tolerance. Block decked only if warpage >0.1mm- preserves 11.0:1 compression critical for xDrive’s 500Nm torque under load.
4. Assembly - Torque: Main caps: 30Nm + 90° + 90° with Norbar wrench. Head bolts: 45Nm + 90° + 90°- deviation causes failure under xDrive’s 1,800kg weight. Timing set with BMW tool 11 3 240- chain tension critical for twin-turbo harmonics at 4,500rpm AWD launch.
5. ECU - Calibration: DME flashed with ISTA/P using 340i xDrive profile. Injector coding matched to Siemens ID. Transfer case torque adaptation via BMW Tool 340i TSB 01-15-12- mandatory to prevent “Drivetrain Malfunction” errors.
6. Dyno Testing: 2-hour break-in on MAHA dyno simulating xDrive load. Monitored: oil pressure (min 2.5bar), boost (18psi peak), VANOS response. Only units passing 340i xDrive power band (326hp @ 5,500rpm under 1,800kg simulated AWD weight) certified.