BMW M550i xDrive Engine Replacement - Rebuilt & Reconditioned Units from £5,700
Compare BMW M550i 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 5 Series M550i xDrive Specialists
Expert Solutions for Every 5 Series M550i xDrive -Base to M Sport
Need a reliable replacement engine for your BMW 5 Series M550i xDrive?
Engine Finders specializes in N63B44 twin-turbo V8 engines with solutions for common turbocharger and valve stem seal failures.
- ✔ M550i xDrive-Specific Engine Types - Addressing twin-turbo V8 N63B44 reliability issues
- ✔ Precision-Tuned for xDrive System - Correct calibration for all-wheel drive performance
- ✔ M550i xDrive Pricing Advantage - Save up to £4,000 on complex V8 system repairs
BMW 5 Series M550i 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 G30 chassis.
N63B44T3 V8 rebuilds with M Performance components.
Complete 4.4L twin-turbo V8 rebuilds to factory specs.
Thorough inspection of high-performance V8 systems.
Direct swap N63 engines for xDrive compatibility.
Performance-tuned 4.4L twin-turbo V8 units.
Low-mileage N63B44T3 engines with verified history.
BMW 5 Series M550i 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 5 Series M550i xDrive Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 5 Series M550i xDrive replacement engines. From the high-performance N63B44T3 twin-turbo V8 to its technical updates, we address the specific challenges of the M550i xDrive. Whether you need a replacement due to common hot-vee turbocharger failures in the N63B44T3 M550i xDrive or oil consumption issues, Engine Finders provides model-specific solutions for your performance sedan.
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✔ M550i xDrive Hot-Vee Turbo Solutions
Our reconditioned N63B44T3 engines include upgraded turbochargers (OEM 11658646519) with revised heat shielding specifically for the M550i xDrive's high-temperature environment, addressing the premature failure common in 2017-2020 models.
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✔ N63B44T3 Oil System Upgrades
We install modified valve stem seals and upgraded PCV systems specifically for the M550i xDrive's high-performance usage, solving the excessive oil consumption that affects 1-2 quarts per 1,000 miles in many examples.
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✔ M550i xDrive-Specific Cooling Enhancements
Our engines include reinforced coolant transfer pipes (OEM 11538646670) between the cylinder heads, addressing the specific failure point in M550i xDrive models that can lead to coolant mixing with oil.
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✔ High-Pressure Fuel System Expertise
We replace high-pressure fuel pumps (OEM 13538643539) with updated units that withstand the M550i xDrive's specific 462hp calibration, preventing the low-pressure fuel faults common in high-mileage examples.
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✔ xDrive-Specific Engine Mount Solutions
Our installations include reinforced hydraulic engine mounts (OEM 22116875361) designed for the M550i xDrive's unique weight distribution and torque vectoring, preventing the premature mount failure common in performance AWD applications.
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✔ M550i xDrive Electronic Wastegate Calibration
We program replacement turbochargers with M550i xDrive-specific wastegate adaptation values, solving the boost pressure faults (codes 123454, 123455) that commonly trigger limp mode in these performance models.
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✔ G30 Chassis-Specific Installation Kits
Every M550i xDrive replacement includes complete installation kits with specific coolant hoses, brackets, and hardware for the G30 chassis, ensuring proper fitment that generic BMW V8 kits often miss.
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 5 Series M550i xDrive Engines for Sale | Engine Finders
Whether you need a replacement due to specific N63 twin-turbo V8 failures in the M550i xDrive or seeking to restore its M Performance capabilities, Engine Finders connects you with specialist suppliers for this high-performance luxury saloon. Source quality engines specifically for the M550i xDrive's unique M Performance tuning and all-wheel-drive configuration.
BMW 5 Series M550i xDrive Replacement Engines
The M550i xDrive (G30 chassis, 2017-2023) features BMW's N63B44T3 twin-turbo 4.4L V8 engine, producing 462hp - positioned between the standard 550i and full M5. This M Performance variant features specific engine tuning, enhanced cooling systems, and unique xDrive calibration for improved performance. The N63B44T3 incorporates lessons from earlier N63 variants with improved valve stem seals, updated turbocharger oil lines, and reinforced timing chain guides. Common failure points include high-pressure fuel pump failures (part 13537585253), turbocharger wastegate actuator issues specific to M Performance tuning, and oil consumption concerns despite improvements. BMW Service Bulletin SI B11 05 18 addresses oil consumption in later N63 variants, with additional M550i-specific considerations for the performance calibration.
BMW 5 Series M550i xDrive Models - Engines Codes
The M550i xDrive utilizes specific M Performance versions of BMW's V8 engine with unique calibrations for the xDrive system:
- N63B44T3: 4.4L twin-turbo V8 (2017-2020) producing 462hp - M Performance specific tuning
- N63B44T3 Technical Update: 2020-2023 versions with improved reliability and emissions compliance
- M Performance Calibration: Unique engine mapping for increased boost pressure and response
- Enhanced Cooling Package: Additional radiators and oil coolers for track-capable performance
Unlike the standard 550i xDrive, the M550i xDrive requires specific engine mounting points and cooling system components to handle the additional power and thermal loads of the M Performance tuning.
Buy Used and Second-Hand BMW 5 Series M550i xDrive Engines
For M550i xDrive owners, we recommend reconditioned engines due to the N63B44T3's complex twin-turbo V8 design and M Performance specific components. Each engine type offers different benefits for this specific high-performance model:
- Used Engines: Lower cost option but ensure they're from M550i-specific applications
- Reconditioned Engines: Ideal for M550i xDrive - include M Performance specific component updates
- Remanufactured Units: Complete overhaul with all turbo system and performance components replaced
All engines undergo specific testing for the M550i xDrive's unique performance requirements and cooling system capabilities.
BMW 5 Series M550i xDrive Engines in Stock
Our specialist suppliers maintain comprehensive stock of M550i xDrive engines with all critical N63B44T3 and M Performance components addressed during reconditioning:
- Complete twin-turbo system overhaul with M Performance specific actuators
- High-pressure fuel pump replacement (13537585253) for reliable performance
- Enhanced cooling system components for track-capable operation
- Updated timing chain system with reinforced M Performance guides
- M550i-specific engine mounts and performance exhaust components
Each engine undergoes dyno testing to verify proper turbo function and cooling system performance specific to M550i xDrive requirements.
Warranty for Replacement BMW 5 Series M550i xDrive Engines
Reconditioned M550i xDrive engines include comprehensive 12-month unlimited mileage warranty covering all major components:
- 12-month coverage on all internal engine components including turbo system
- Labour coverage included with approved BMW M Performance specialist installers
- Specific coverage for M550i-specific cooling system components
- UK-wide network of BMW performance specialists for warranty claims
Engine Finders acts as a price comparison website connecting you with specialist suppliers. All warranties are provided by the individual engine suppliers and subject to their specific terms and conditions.
Expert Tips for Choosing the Right Engine for Your BMW 5 Series M550i xDrive
♻️ M550i xDrive Engine Types Explained
- Reconditioned N63B44 twin-turbo V8 engines with updated turbo components
- Used low-mileage units from G30 chassis specifically for M550i models
- TU2 versions for 2018+ models with improved thermal management
- Specialist rebuilt engines addressing common valve stem seal failures
£ M550i xDrive Replacement Engine Cost in the UK
- Reconditioned N63B44: £8,500-£11,000 including twin-turbo system
- Used engines (30-60k miles): £6,200-£8,000 depending on condition
- TU2 version premium: Additional £1,500-£2,000 for latest updates
- Save 35-45% vs main dealer quotes through Engine Finders network
🔍 Finding the Right M550i xDrive Engine
- Verify N63B44 engine code specific to M550i (VIN positions 6-7 show "63")
- Check production date: Pre-2018 vs post-2018 TU2 versions differ significantly
- Confirm xDrive compatibility - different oil pans and mounting points
- Ensure matching MEVD17.2.6 ECU calibration for proper M Performance integration
⛽ M550i xDrive Performance Petrol Engine
- N63B44 twin-turbo V8 produces 462hp with unique hot-V configuration
- Average fuel consumption 24-28mpg despite high performance output
- Requires premium 98 RON fuel for optimal performance and reliability
- ULEZ compliant but higher road tax than diesel equivalents
🔒 Quality Assurance - Warranty
- 24-month unlimited mileage warranty on all reconditioned engines
- Compression testing: 12.5-13.5 bar across all 8 cylinders required
- Updated turbo coolant lines included in rebuild
- VANOS system recalibration specific to M Performance requirements
🛒 Compare - Save on M550i xDrive Engines
- Source from low-mileage US imports (same N63B44, different emissions)
- Consider rebuilt units with upgraded thermal management components
- Verify both turbochargers condition - critical failure point in M550i
- Check for included updated high-pressure fuel pump (13-51-7-616-769)
⚙️ M550i xDrive Engine Works: How Experts Rebuild Engines
When your N63B44 twin-turbo V8 engine fails, M550i xDrive engine 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 for the high-performance petrol engine.
1. Comprehensive Diagnostics: Using ISTA/P diagnostic software to identify specific N63B44 failure patterns including turbo wastegate rattle, oil consumption from valve stem seals, and high-pressure fuel pump performance in M550i models.
2. Engine Teardown - Inspection: Complete disassembly with focus on hot-V area components affected by heat saturation in the M550i xDrive's high-performance engine bay configuration.
3. Critical Component Replacement: Mandatory replacement of valve stem seals, turbo coolant lines, and updated vacuum pump components specific to xDrive M Performance models.
4. Precision Machining: Cylinder head resurfacing with specific torque sequence for aluminum block (25Nm + 90° + 90° using stretch bolts 11-12-0-392-784) to handle M Performance stresses.
5. Assembly - Calibration: Reassembly using BMW-specific lubricants and VANOS system calibration for xDrive M Performance torque distribution requirements.
6. Testing - Validation: Dyno testing to verify 462hp output and check for boost leaks common in twin-turbo M Performance setups, followed by road testing for xDrive system integration.