BMW 5 Series M5 Engine Replacement - Rebuilt & Reconditioned Units from £5,700
Compare BMW 5 Series M5 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 M5 Specialists
Expert Solutions for Every M5 -F90 to Competition
Need a reliable replacement engine for your BMW M5?
Engine Finders specializes in S63 twin-turbo V8 engines with solutions for common high-performance failures.
- ✔ M5-Specific Engine Types - Addressing S63 twin-turbo V8 reliability issues
- ✔ Precision-Tuned for M Performance - Correct calibration for track and road use
- ✔ M5 Pricing Advantage - Save up to £15,000 on complex V8 system repairs
BMW 5 Series M5 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 E28, E34, E39, E60/E61, F10, F90.
High-performance rebuilds addressing S63/S85 V8-specific rod bearing and turbo issues.
Fully rebuilt to factory specs, including critical VANOS and high-pressure fuel system updates.
Thoroughly inspected and restored, ideal for high-mileage M5s with oil consumption issues.
Direct swap S63/S85 units for minimal downtime after catastrophic failure.
Cleaned, tested, and performance-tuned to handle M5-specific thermal stresses.
Affordable options with verified low mileage and full service history for older M5 models.
BMW 5 Series M5 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 M5 Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW M5 replacement engines. From the high-performance S63B44T4 twin-turbo V8 in F90 models to the previous generation S63B44B, we address the specific challenges of M5 ownership. Whether you need a replacement due to common rod bearing failures in the S63B44T4 M5 or high-pressure fuel system issues, Engine Finders provides track-proven solutions for your super sedan.
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✔ M5-Specific Rod Bearing Solutions
Our reconditioned S63 engines include upgraded rod bearings (OEM 11278648921) with improved clearance specifications, specifically addressing the premature wear issue that affects F90 M5 models under hard acceleration.
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✔ S63B44T4 Hot-Vee Cooling Enhancements
We install reinforced coolant pipes (OEM 11538646671) and upgraded intercoolers specifically for the M5's 617hp configuration, solving the heat management issues that can lead to power reduction in track conditions.
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✔ M5 High-Pressure Fuel System Upgrades
Our engines include updated high-pressure fuel pumps (OEM 13538643540) and injectors designed to withstand the M5's specific 3.5-bar rail pressure, preventing the lean condition faults common in high-mileage examples.
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✔ Turbocharger Wastegate Expertise
We replace electronic wastegate actuators (OEM 11658646520) with revised units that handle the M5's specific boost profile, solving the rattle and boost control issues that commonly affect S63 engines after 40,000 miles.
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✔ M5-Specific VANOS System Updates
Our reconditioning process includes updated VANOS solenoids (OEM 11368616021) and revised timing chain guides specifically for the M5's aggressive cam timing profile, preventing the cold-start rattle common in F90 models.
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✔ F90 Chassis Engine Mount Solutions
We include reinforced active engine mounts (OEM 22118675362) specifically designed for the M5's launch control system, preventing the premature failure that occurs during repeated hard launches.
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✔ M5-Specific Oil System Upgrades
Our engines feature upgraded oil pump chains (OEM 11418649721) and revised baffling for the M5's high-G cornering demands, solving the oil starvation issues that can occur during track use.
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✔ Competition Package Calibration
For M5 Competition models, we ensure proper ECU calibration matching the 625hp specification, including specific throttle mapping and boost curves that generic S63 replacements often overlook.
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 M5 Engines for Sale | Engine Finders
Whether you need a replacement due to specific S63 twin-turbo V8 failures in the M5 or seeking to restore its legendary performance status, Engine Finders connects you with specialist suppliers for this iconic super saloon. Source quality engines specifically for the M5's unique high-performance characteristics and track capabilities.
BMW M5 Replacement Engines
The M5 has evolved through multiple generations, each featuring bespoke M Division engines. The current F90 generation (2017-2023) features the S63B44T4 4.4L twin-turbo V8 producing 600hp (625hp in Competition models). This engine uses a cross-engine exhaust manifold design with twin-scroll turbochargers mounted in the V of the engine. Unique to the M5 is the M xDrive all-wheel-drive system with rear-wheel-drive bias. Common failure points include high-pressure fuel system issues (part 13538643386), turbocharger wastegate rattle under high boost conditions, and crankshaft seal leaks due to extreme thermal cycling. BMW M Service Bulletin SI M00 05 19 addresses turbocharger control system updates for high-mileage F90 M5 models. The engine features specific reinforced components including forged crankshaft and connecting rods for sustained high-RPM operation.
BMW M5 Models - Engines Codes
The M5 utilizes exclusive M Division engines with specific high-performance characteristics across generations:
- S63B44T4: 4.4L twin-turbo V8 (F90, 2017-2023) producing 600hp - cross-engine turbo design
- S63B44O1: Previous generation 4.4L V8 (F10, 2011-2016) producing 560hp - conventional turbo layout
- S85B50: 5.0L V10 (E60, 2005-2010) producing 507hp - derived from F1 technology
- S62B50: 5.0L V8 (E39, 1998-2003) producing 400hp - naturally aspirated high-revving engine
Each generation features specific M Division enhancements including individual throttle bodies, high-flow fuel systems, and track-focused cooling solutions unavailable on standard 5 Series models.
Buy Used and Second-Hand BMW M5 Engines
For M5 owners, we recommend fully reconditioned engines due to the extreme performance demands and specialized M Division components. Each engine type offers different benefits for this specific high-performance application:
- Used Engines: Lower cost but risk unknown track use history and component wear
- Reconditioned Engines: Ideal for M5 - include M-specific component replacements
- Fully Remanufactured Units: Complete overhaul with all performance components certified to M Division standards
All engines must undergo specific testing for M5's unique performance envelope and thermal management requirements.
BMW M5 Engines in Stock
Our specialist suppliers maintain comprehensive stock of M5 engines with all critical S63 components addressed during reconditioning to M Division standards:
- Complete twin-turbo system overhaul with M-specific wastegate actuators
- High-pressure fuel system replacement (13538643386) for sustained performance
- Reinforced timing chain system with M Division specific guides and tensioners
- Performance cooling system components including auxiliary radiators
- M5-specific engine mounts and drivetrain components
Each engine undergoes rigorous dyno testing to verify performance across the entire RPM range and thermal stability under track conditions.
Warranty for Replacement BMW M5 Engines
Reconditioned M5 engines include comprehensive 12-month unlimited mileage warranty covering all major performance components:
- 12-month coverage on all internal engine components including turbo system
- Labour coverage included with approved BMW M Division specialist installers
- Specific coverage for M5-specific high-performance components
- UK-wide network of BMW M certified 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 M5
M5 Engine Types Explained
- Reconditioned S63 twin-turbo V8 engines with M-specific components
- Used low-mileage units from F90 chassis specifically for M5 models
- Competition package versions with enhanced cooling systems
- Specialist rebuilt engines addressing track-specific stress points
M5 Replacement Engine Cost in the UK
- Reconditioned S63: £15,000-£22,000 including M-specific upgrades
- Used engines (20-50k miles): £10,000-£16,000 depending on condition
- Competition version premium: Additional £3,000-£5,000 for performance parts
- Save 40-50% vs main dealer quotes through Engine Finders network
Finding the Right M5 Engine
- Verify S63 engine code specific to M5 (VIN positions 6-7 show "S63")
- Check for Competition package calibration - different power output
- Confirm M xDrive compatibility with performance-specific mounting
- Ensure matching DME MSD85 ECU calibration for M Performance integration
M5 High-Performance Petrol Engine
- S63 twin-turbo V8 produces 600hp (625hp in Competition models)
- Average fuel consumption 18-22mpg due to high-performance output
- Requires premium 98 RON fuel and specific M Performance oil
- ULEZ compliant but highest road tax bracket due to emissions
Quality Assurance - Warranty
- 24-month unlimited mileage warranty on all M5 engines
- Enhanced compression testing for track-use conditions
- Updated turbo actuators (OEM 11-65-8-635-872) for M Performance
- M xDrive system recalibration specific to high-performance use
Compare - Save on M5 Engines
- Source from low-mileage European M5 imports (same S63 engine)
- Consider rebuilt units with upgraded track cooling components
- Verify both turbochargers condition - critical for M5 performance
- Check for included updated high-pressure fuel system components
M5 Engine Works: How Experts Rebuild Engines
When your S63 twin-turbo V8 engine fails, M5 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 ultimate performance sedan.
1. Comprehensive Diagnostics: Using ISTA/P diagnostic software to identify specific S63 failure patterns including turbo wastegate issues under track conditions, oil system performance, and high-pressure fuel delivery unique to M5 models.
2. Engine Teardown - Inspection: Complete disassembly with focus on M-specific components including cross-bank exhaust manifolds, reinforced connecting rods, and high-flow turbochargers affected by performance use.
3. Critical Component Replacement: Mandatory replacement of M-specific turbochargers (OEM 11-65-8-635-872), high-pressure fuel pumps, and reinforced valve train components specific to Competition models.
4. Precision Machining: Cylinder head resurfacing with specific torque sequence for high-performance aluminum block (30Nm + 90° + 90° using M-specific stretch bolts) to handle track-level stresses.
5. Assembly - Calibration: Reassembly using BMW M-specific lubricants and VANOS system calibration for M xDrive torque distribution and drift mode functionality requirements.
6. Testing - Validation: Dyno testing to verify 600hp+ output and check for boost leaks under track conditions, followed by road testing for M xDrive system integration and performance validation.