BMW X6 M Competition Engine Replacement - Rebuilt & Reconditioned Units from £5,200
Compare BMW X6 M Competition 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 X6 M Competition Engine Replacement
Expert Solutions for Every X6 M Competition - 2020 to Present
Need a reliable replacement engine for your BMW X6 M Competition?
Engine Finders specializes in S63TU engine solutions, addressing common issues like sudden engine failure during acceleration.
- ✔ X6 M Competition-Specific Engine Types - Addressing S63TU failures
- ✔ Precision-Tuned for X6 M Competition - Correct calibration for S63TU systems
- ✔ X6 M Competition Pricing Advantage - Save up to £X on common S63TU repairs
BMW X6 M Competition 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 F86, F96, G06 chassis codes.
High-performance rebuilds with OEM parts, addressing common S63 VANOS solenoid failures.
Fully stripped and rebuilt to factory specs, including updated rod bearings to prevent premature wear.
Thoroughly inspected and restored to working condition, addressing turbocharger failures common in high-performance M engines.
Direct swap engines for minimal downtime, compatible with F86, F96, G06 chassis codes.
Cleaned, tested, and performance-tuned units, addressing common issues like excess oil consumption.
Affordable options with verified mileage and history, addressing common issues like turbocharger failures.
BMW X6 M Competition 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 X6 M Competition Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW X6 M Competition replacement engines. From the S63 B44 O0 to S63 B44 T2 petrol engines, we address variant-specific issues such as turbocharger failures and high oil consumption. Whether you need a replacement due to timing chain tensioner wear or intercooler leaks, Engine Finders makes it simple to source the right engine, UK-rebuilt and warranty-backed.
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✔ X6 M Competition Timing Chain Solutions
We replace the S63 B44 O0 timing chain tensioner using upgraded components specifically tuned for the X6 M Competition, addressing unique wear patterns caused by high-performance engine management.
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✔ Turbocharger Reliability for S63 Engines
Our S63 B44 O0 and O1 turbochargers are fully rebuilt, resolving the X6 M Competition's common twin-turbo failures. Each unit is tested to OEM-spec ensuring direct fit and consistent performance, unlike generic rebuilds.
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✔ EGR System Expertise
Reconditioned S63 B44 engines include updated EGR coolers designed for X6 M Competition calibration, preventing carbon buildup and ensuring compliance with F96 chassis-specific performance standards.
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✔ High-Pressure Fuel Pump Solutions
Our rebuilt S63 B44 T2 engines address high-pressure fuel pump failures common in the X6 M Competition, ensuring optimized fuel delivery for peak performance and longevity, directly targeting variant-specific failure points.
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✔ Oil Consumption & VANOS Calibration
The S63 B44 O0 engine in X6 M Competition receives tailored VANOS calibration during rebuild, correcting excessive oil consumption and ensuring smooth torque delivery, a key concern for high-output petrol engines in this model.
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✔ OEM-Grade Intercooler & Gasket Replacements
Each S63 B44 unit is fitted with OEM-spec intercooler gaskets and seals, resolving X6 M Competition-specific boost leaks and ensuring direct-fit installation for maximum reliability and performance.
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✔ UK-Rebuilt & Warranty-Backed
All engines are rebuilt in the UK by certified specialists, bench-tested to exacting standards, and come with a 12-month warranty, providing peace of mind for X6 M Competition owners seeking a dependable replacement engine.
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✔ Chassis-Specific Installation Guidance
Our team provides detailed installation guidance for F96 chassis X6 M Competition, ensuring correct engine mounting, ECU mapping, and fluid connections, minimizing downtime and avoiding common post-replacement issues unique to this model.
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 X6 M Competition Engines for Sale | Engine Finders
Engine Finders offers UK drivers access to verified BMW X6 M Competition replacement engines. From S63 B44 O0 to S63 B44 T2 petrol engines, we solve common issues such as turbocharger failures and timing chain tensioner wear, ensuring high-performance reliability for your F96 chassis X6 M Competition.
BMW X6 M Competition Replacement Engines
Introduced in 2019 for the F96 chassis, the X6 M Competition features the twin-turbo S63 B44 petrol engine. Over its production, owners have reported timing chain tensioner wear and turbocharger inconsistencies. Our replacement engines incorporate these improvements, delivering reliable power for 2019-2023 X6 M Competition models while preserving the high-output M performance signature.
BMW X6 M Competition Models & Engines Codes
The X6 M Competition employs high-performance S63 engines, optimized per generation:
- S63 B44 O0: 4.4L V8 twin-turbo petrol, F96 chassis, 2019-2020, known for timing chain tensioner wear.
- S63 B44 O1: 4.4L V8 twin-turbo petrol, F96 chassis, 2020-2021, updated VANOS calibration to reduce oil consumption.
- S63 B44 T2: 4.4L V8 petrol, F96 chassis, 2021-2023, improved turbocharger units to prevent boost leaks common in early models.
- S63 B44 R: 4.4L V8 petrol, F96 chassis, 2019-2023, reinforced EGR cooler assembly addressing X6 M Competition-specific carbon buildup.
While the S63 engine appears across BMW M models, the X6 M Competition has unique ECU mapping and performance tuning, affecting wear patterns and replacement needs.
Buy Used and Second-Hand BMW X6 M Competition Engines
Engine Finders offers used, reconditioned, rebuilt, and remanufactured engines tailored for X6 M Competition owners. For S63 B44 O0 engines, remanufactured options are recommended due to timing chain tensioner concerns. Each type is tested to ensure compatibility and reliability with high-performance F96 chassis models.
- Used: Budget-friendly, pre-inspected, suitable for temporary replacement
- Reconditioned: Upgraded components addressing turbo and timing chain issues
- Rebuilt: Complete teardown and component replacement for peak reliability
- Remanufactured: Factory-standard rebuilds meeting OEM S63 B44 specifications
All engines undergo rigorous quality assurance specific to the X6 M Competition to ensure peak performance and longevity.
BMW X6 M Competition Engines in Stock
Our UK stock includes fully reconditioned S63 B44 engines for X6 M Competition models. Each unit addresses common failure points, including timing chain tensioners, turbocharger integrity, and EGR cooler performance.
- New timing chain tensioner for S63 B44 O0 engines
- Upgraded turbochargers with tested boost performance
- Refurbished VANOS units ensuring correct oil flow
- Reconditioned EGR coolers preventing carbon buildup
Each engine undergoes bench testing and dyno validation to replicate F96 chassis X6 M Competition performance standards.
Warranty for Replacement BMW X6 M Competition Engines
All reconditioned and rebuilt engines come with a 12-month UK warranty. S63 B44 O0 engines in X6 M Competition have limited coverage on timing chain components due to design-specific wear patterns.
- 12-month warranty for all major engine components
- Covers turbochargers, EGR systems, and VANOS units
- Limited coverage on known high-wear parts such as timing chain tensioners
Engine Finders acts as a price comparison platform; warranty terms are administered by the engine supplier. Coverage is valid for UK-based installations only.
Expert Tips for Choosing the Right Engine for Your BMW X6 M Competition
BMW X6 M Competition Engine Types Explained
- F86 X6 M Competition (2015-2019): S63B44T2 twin-turbo V8.
- F96/G06 X6 M Competition (2020+): S63B44T4 (TU3) V8 with updates.
- Used exchange units: cheapest but check S63 fault history.
- Reconditioned S63 units: replace bearings and wastegates first.
BMW X6 M Competition Replacement Engine Cost in the UK
- Used S63 supply only: typically £3,000-£8,000 in UK listings.
- Reconditioned S63 (supply & fit): ~£8,000-£12,000 typical.
- Dealer new exchange units: often £12,000+ depending on spec.
- Labour & ancillaries can add £1,000-£3,000 to total bill.
Finding the Right BMW X6 M Competition Engine
- Match chassis: F86 (2015-2019) uses S63B44T2 engines only.
- F96/G06 (2020+) X6 M Competition uses S63B44T4/TU3 variants.
- Confirm engine code on block and in dealer VIN decode report.
- Avoid F95/F96 donor engines with different ECU or MxDrive maps.
BMW X6 M Competition Petrol vs Diesel Engines
- X6 M Competition is petrol V8 only - no diesel M Competition option.
- F96+ Competition adds 48V mild-hybrid tech (affects throttle feel).
- Check Euro emission status for ULEZ; 2020+ models more likely compliant.
- Petrol V8 suits high-load driving; not ideal for long city idling runs.
Quality Assurance & Warranty
- Ensure reconditioned S63 includes crank & rod bearing replacement.
- Replace timing chain tensioners (Genuine BMW 11317557741) on rebuild.
- Check turbo wastegate actuators are serviced or replaced (warranty).
- Prefer suppliers offering 12-24 month warranty on S63 re-builds.
Compare & Save on BMW X6 M Competition Engines
- Get 3 supply-and-fit quotes; insist on S63 test reports before fit.
- Avoid suppliers who skip wastegate or bearing inspection on S63 units.
- Opt for reconditioned units that list replaced parts & dyno test results.
- Engine Finders and UK specialists often save 30-60% vs dealer quotes.
BMW X6 M Competition Engine Works: How Experts Rebuild Engines
When your engine fails, X6 M Competition S63 engine works can restore track-level performance without the dealer premium. Below is the M-specific 6-step rebuild workflow technicians follow for S63 V8s.
1) Full strip & forensic inspection
Engine is fully stripped; crank journals, rod bearings and turbo housings inspected for metal contamination. Inspect for super-knock evidence on S63 TU2/T4 variants and catalogue component codes for replacement. Specialist borescope checks confirm cylinder scoring before machining.
2) Replace wear items & precision machining
Replace rod and main bearings, hone or re-bore cylinders if needed, and machine crank to OEM tolerances. Timing chain guides and tensioners (Genuine BMW 11317557741) are swapped with new parts to avoid post-fit stretch failures common to S63 families.
3) Turbo & wastegate service
Turbos are stripped, balanced and wastegate actuators/pressure converters (e.g., BMW 11747626351 / related actuator units) are replaced or reprogrammed. Many S63 engines show wastegate actuator faults; replacing actuators prevents repeat limp modes post-fit.
4) Component upgrades & ECU baseline
Replace high-stress components (pistons, rings, valve stem seals) and fit new oil pump drive components if worn. Flash the DME to a clean baseline tuned for S63B44T2 or S63B44T4 as appropriate and set immobiliser pairings before dyno tests.
5) Assembly, torque & leak test
Assemble using OEM torque sequence and torque values for S63 components, run full oil pressure, coolant pressure and vacuum checks. Perform crankcase pressure and cam timing verification to factory specs before starting the engine.
6) Dyno run, road test & warranty sign-off
Complete a staged dyno run to validate power and AFR across the rev range, then a probationary road test replicating M-drive loads. Issue a parts-by-parts report, fitment photos and a 12-24 month warranty based on the rebuild grade.