BMW 6 Series M6 Convertible Engine Replacement - From £5,700

Compare BMW 6 Series M6 Convertible 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.

Enter Your Vehicle Registration To
Find Best Supplier Near You

Flag Icon
• Save up to 60% • Reconditioned Engine Specialists • 15 Years Experience • 100s of UK Suppliers • 12-24 Month Warranty • No Hidden Charges • Save up to 60% • Reconditioned Engine Specialists • 15 Years Experience • 100s of UK Suppliers • 12-24 Month Warranty • No Hidden Charges
OR

Search your Engine Manually

Engine Finders

BMW 6 Series M6 Convertible Specialists

Expert Solutions for Every 6 Series M6 Convertible - M6 Convertible to M6 Competition

Need a reliable replacement engine for your BMW 6 Series M6 Convertible ?
Engine Finders specializes in 6 Series M6 Convertible engines with solutions for common S63B44T twin-turbo failures.

  • ✔ 6 Series M6 Convertible -Specific Engine Types - Addressing S63B44T twin-turbo issues in F12 variants
  • ✔ Precision-Tuned for 6 Series M6 Convertible - Correct calibration for performance-oriented applications
  • ✔ 6 Series M6 Convertible Pricing Advantage - Save up to £1500 on common turbocharger repairs
Find Your Perfect BMW 6 Series M6 Convertible Engine Today!
BMW 6 Series M6 Convertible engine replacement specialists | Engine Finders

BMW 6 Series M6 Convertible 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 F12.

BMW 6 Series M6 Convertible Rebuilt Engines

Includes upgraded twin-turbo components for S63B44T F12 applications.

BMW 6 Series M6 Convertible Remanufactured Engines

Factory-standard rebuild with enhanced cooling for F12 high-performance demands.

BMW 6 Series M6 Convertible Reconditioned Engines

Thoroughly restored with performance-oriented components for F12 compatibility.

BMW 6 Series M6 Convertible Replacement Engines

Direct swap units with M6-specific performance calibration.

BMW 6 Series M6 Convertible Refurbished Engines

Performance-tuned with enhanced oil management for F12 high-output applications.

BMW 6 Series M6 Convertible Used Engines

Verified low-mileage units with M6-specific performance verification.

BMW 6 Series M6 Convertible 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.

Where to buy BMW 6 Series M6 Convertible replacement engine | Engine Finders

Why Choose Engine Finders for Your BMW 6 Series M6 Convertible Engine?

Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 6 Series M6 Convertible replacement engines. From the S63B40A V8 engine to addressing specific high-performance cooling issues in the M6 Convertible, we provide solutions specifically calibrated for your F12 chassis. Whether you need a replacement due to specific oil pump failures in the S63B40A M6 Convertible or valve train problems, Engine Finders makes it easy to locate the right engine, fast.

  • ✔ M6 Convertible-Specific S63B40A V8 Solutions: We replace the high-pressure fuel pump with upgraded components known to fail in M6 Convertible from 2012-2018

    The S63B40A in M6 Convertible experiences unique fuel pump wear patterns due to the high-performance nature of the M6 platform. We install upgraded components that address the specific failure points common to M6 Convertible models from 2012-2018, ensuring reliability for the high-output V8.

  • ✔ M6 Convertible V8 Cooling System Optimization: Includes updated oil cooler and thermostat for F12-specific high-performance heat management

    The M6 Convertible's S63B40A V8 engine generates significantly higher heat than standard 6 Series models, leading to specific cooling system stress. Our reconditioned engines include components specifically designed to address these F12-specific thermal management issues.

  • ✔ M6 Convertible Timing Chain Upgrade: Enhanced timing chain kit addressing the unique load characteristics of the F12 V8 platform

    The M6 Convertible's V8 engine creates different vibration patterns affecting timing chain wear. We install upgraded components specifically designed for the F12's unique V8 thermal and mechanical stress patterns, ensuring longevity under high-performance conditions.

  • ✔ VANOS System for M6 Convertible: Updated solenoids programmed specifically for F12 S63B40A V8 performance characteristics

    The M6 Convertible's VANOS system requires specific calibration for the high-performance S63B40A V8. Our specialists ensure proper programming and component matching for optimal performance in your F12 chassis with the naturally aspirated V8 engine.

  • ✔ F12 M6 Convertible-Specific Intake System: Includes upgraded intake components (OEM 11617541012) addressing high-flow requirements of V8 engine

    The M6 Convertible's V8 engine requires specific intake components that differ from standard 6 Series models. We install intake components specifically designed for the F12's unique V8 air flow demands and high-performance requirements.

  • ✔ ECU Programming for M6 Convertible: Complete ISTA coding for F12-specific V8 management and performance mapping

    The M6 Convertible requires specific ECU programming to communicate with the S63B40A V8 engine management system. Our specialists ensure seamless integration without performance loss or error codes in your F12 chassis.

  • ✔ M6 Convertible-Specific Oil Pump System: Updated high-pressure oil pump (OEM 11217541012) addressing common V8 oil pressure issues in F12 models

    The M6 Convertible's S63B40A V8 creates unique oil pressure demands. We install enhanced components specifically designed to address the common oil pump pressure issues in F12 chassis models with the high-performance V8 engine.

  • ✔ F12 Chassis Verification: Complete VIN-specific matching to ensure 100% compatibility with your M6 Convertible's ECU and harness

    We verify each engine against your F12 chassis code to ensure perfect fitment with your M6 Convertible's specific wiring harness, mounting points, and ECU configuration for seamless installation of the high-performance V8.

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.

4.9/5
"Thanks to Engine Finders, I saved over £1,200 on my engine!" - Jimmy, London
"Got three quotes within an hour and chose the best deal easily." - Pete, Leeds
"Engine Finders made the whole process quick and painless." - Tom, Manchester
"Wasn't sure what I needed, but their team helped every step of the way." - Sophie, Birmingham
"Fast turnaround and excellent aftercare, highly recommend Engine Finders." - Ahmed, Bradford
"Best car-related experience I've had in years. Awesome guys, honestly!." - Liam, London

BMW 6 Series M6 Convertible Engines for Sale | Engine Finders

Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 6 Series M6 Convertible replacement engines. Whether you need a replacement due to specific oil pump issues in the S63B40A M6 Convertible or high-performance cooling system failures, we provide solutions specifically calibrated for your F12 chassis.

BMW 6 Series M6 Convertible Replacement Engines

The BMW 6 Series M6 Convertible (F12, 2012-2018) features the S63B40A naturally aspirated V8 engine, known for its high-performance output but susceptible to specific issues. The S63B40A in the M6 Convertible experiences unique stress patterns due to the convertible's structural dynamics and the naturally aspirated high-RPM operation. Common failure points include high-pressure fuel pump degradation after 70,000 miles and oil pump pressure issues (OEM 11217541012) due to extended high-RPM operation in the F12 platform. BMW Service Bulletin S63 03 18 specifically addresses these issues for M6 Convertible models, recommending updated components during rebuilds.

BMW 6 Series M6 Convertible Models - Engines Codes

The M6 Convertible features the S63B40A naturally aspirated V8 engine, specifically calibrated for the F12 chassis and high-performance convertible operation. Each engine code has unique failure patterns specific to the M6 Convertible's operating conditions.

  • S63B40A: 4.0L naturally aspirated V8 (2012-2018 F12) - known for HPFP issues in M6 Convertible after 70,000 miles
  • S63B40A (LCI): Updated version with modified ECU mapping for F12 convertible dynamics in M6 (2015-2018)
  • Oil Pump: High-pressure unit (OEM 11217541012) - prone to pressure drops in M6 Convertible's high-RPM environment
  • VANOS System: Specific calibration for F12 performance - critical for M6 Convertible performance
  • HPFP: High-pressure fuel pump - common failure point in M6 Convertible S63B40A engines
  • Timing Chain: Specific to S63B40A in F12 - requires replacement at 90,000 miles for M6 Convertible

The S63B40A in the M6 Convertible has different oil pressure requirements than other BMW models due to the naturally aspirated high-RPM design and convertible's weight distribution, leading to unique wear patterns not found in coupé variants.

Buy Used and Second-Hand BMW 6 Series M6 Convertible Engines

Engine Finders offers multiple engine types for your M6 Convertible, each with specific advantages for the S63B40A engine's unique requirements.

  • Used Engines: Cost-effective option with verified mileage and history for M6 Convertible S63B40A engines
  • Reconditioned Engines: Thoroughly inspected S63B40A units with updated components for common M6 Convertible issues
  • Rebuilt Engines: High-performance S63B40A rebuilds with OEM parts addressing specific M6 Convertible failure points
  • Remanufactured Engines: Fully stripped and rebuilt S63B40A engines to factory specs for M6 Convertible

For M6 Convertible with S63B40A engines, we recommend reconditioned or remanufactured engines due to common high-pressure fuel pump and oil pump issues that used engines may not address.

BMW 6 Series M6 Convertible Engines in Stock

Our reconditioned M6 Convertible engines include comprehensive component upgrades specifically addressing S63B40A failure points in the F12 chassis.

  • New high-pressure fuel pump specifically for S63B40A in M6 Convertible
  • Updated oil pump (OEM 11217541012) for F12-specific high-performance requirements
  • Enhanced timing chain kit for M6 Convertible's high-RPM operation
  • Upgraded VANOS solenoids programmed for F12 performance characteristics
  • New PCV system components addressing oil separator issues in M6 Convertible

Each M6 Convertible engine undergoes comprehensive dyno testing and ISTA coding to ensure perfect integration with the F12-specific ECU requirements and high-performance demands.

Warranty for Replacement BMW 6 Series M6 Convertible Engines

Reconditioned and rebuilt M6 Convertible engines come with comprehensive warranty coverage.

  • 12-month/12,000-mile warranty on M6 Convertible replacement engines
  • Covers oil pump, HPFP, and timing chain components for S63B40A in M6 Convertible
  • Includes VANOS solenoids and valve train system for M6 Convertible
  • Validated through BMW diagnostic equipment for F12 compatibility

Engine Finders is a price comparison website. All warranties are provided by the respective engine suppliers and terms may vary. Please verify warranty details directly with the supplier.

Where to buy BMW 6 Series M6 Convertible replacement engine | Engine Finders

Expert Tips for Choosing the Right Engine for Your BMW 6 Series M6 Convertible

BMW 6 Series M6 Convertible Engine Types Explained

  • Reconditioned S63 engines for 6 Series M6 Convertible include upgraded turbochargers addressing common failures
  • Remanufactured units feature complete strip-down with factory-spec components specific to F12 chassis
  • Used engines offer savings but require inspection of high-pressure fuel pump for F12 applications
  • For 6 Series M6 Convertible with twin-turbo issues, rebuilt engines include upgraded intercoolers

BMW 6 Series M6 Convertible Replacement Engine Cost in the UK

  • S63 twin-turbo engines for 6 Series M6 Convertible cost £5,700-£6,200 depending on rebuild level
  • Used S63 engines start from £4,200 but may require immediate service work on F12 applications
  • Engine Finders saves 6 Series M6 Convertible owners up to 60% vs main dealer replacement costs
  • Remanufactured S63 units for F12 chassis offer best value at £5,900 with full warranty

Finding the Right BMW 6 Series M6 Convertible Engine

  • Check VIN for S63 twin-turbo engines specific to 6 Series M6 Convertible F12 chassis codes
  • Verify engine code matches F12 year range (2012-2018) for correct mounting compatibility
  • Confirm M6-specific mounting points when selecting engines for 6 Series M6 Convertible
  • Don't confuse F12 S63 with F06 650i engines - mounting points differ for F12

BMW 6 Series M6 Convertible Petrol vs Diesel Engines

  • 6 Series M6 Convertible uses only S63 petrol engines - no diesel variants available for F12
  • Performance-focused S63 requires premium fuel for optimal operation in F12 chassis
  • For track use, S63 in 6 Series M6 Convertible needs enhanced cooling system maintenance
  • City driving suits S63 with regular oil changes due to high-performance nature

Quality Assurance - Warranty

  • For 6 Series M6 Convertible S63 engines, quality rebuilds include new high-pressure fuel pumps
  • Warranty covers twin-turbo components specific to S63 F12 applications for 12 months
  • Quality engines for 6 Series M6 Convertible include upgraded VANOS units to prevent performance issues
  • Engine Finders verifies suppliers test F12 engines on dyno calibrated for high-performance load distribution

Compare - Save on BMW 6 Series M6 Convertible Engines

  • Compare S63 prices for 6 Series M6 Convertible by requesting quotes from multiple suppliers
  • Avoid suppliers who don't replace S63 timing chain tensioner for F12 engines
  • Best value for 6 Series M6 Convertible comes from suppliers with F12-specific S63 rebuild experience
  • Engine Finders connects 6 Series M6 Convertible owners with local suppliers reducing delivery costs

BMW 6 Series M6 Convertible Engine Works: How Experts Rebuild Engines

When your engine fails, BMW 6 Series M6 Convertible 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.

1. Complete Disassembly - Inspection

Experts strip the S63 twin-turbo engine from 6 Series M6 Convertible completely, cataloging each component. They inspect for wear patterns specific to F12 applications, checking for common S63 issues like turbocharger bearing wear and oil pump housing wear. Critical measurements are taken of crankshaft journals, connecting rod clearances, and cylinder bore wear that's typical in F12 S63 engines from 2012-2018.

2. Block - Head Machining

The engine block and cylinder head for 6 Series M6 Convertible S63 undergo precision machining. Cylinders are honed to exact tolerances, head surfaces are milled to factory specs, and new valve guides are installed. For F12 applications, special attention is given to the oil pump housing which is prone to wear in S63 engines. All machined surfaces are checked against BMW's specifications for F12 chassis compatibility.

3. Component Replacement - Upgrades

For 6 Series M6 Convertible engines, worn components are replaced with OEM parts. This includes new pistons, connecting rods, timing chain assembly, and upgraded turbochargers to address F12-specific issues. High-pressure fuel pumps are replaced as these commonly fail in S63 engines for F12 chassis. All gaskets and seals are changed to factory specifications.

4. Turbocharger Rebuild - Testing

S63 twin-turbos from 6 Series M6 Convertible are rebuilt with new bearings, seals, and variable geometry components. Each turbo is balanced and tested to BMW's specifications for F12 applications. The variable geometry actuators are calibrated specifically for the S63 engine in F12 chassis, ensuring proper boost delivery and response. Special tools (BMW 11617587469) are used during this process for F12 S63 engines.

5. Final Assembly - Torque Specifications

Experts assemble the 6 Series M6 Convertible S63 engine using BMW's torque specifications and procedures. Critical fasteners like head bolts are torqued to 25Nm with threadlocker specific to F12 S63 applications. Timing is set using BMW special tools, and all fluids are filled to F12-specific levels. The engine harness is inspected for F12 compatibility ensuring M6-specific functions operate properly.

6. Dyno Testing - Quality Verification

Each rebuilt 6 Series M6 Convertible engine undergoes dyno testing on equipment calibrated for F12 high-performance applications. Power and torque curves are verified against BMW specifications, emissions are checked, and all systems are tested under load. The engine is run through various RPM ranges to ensure proper twin-turbo operation specific to S63 in F12 chassis. Final quality checks include leak testing and M6-specific communication verification.

Frequently Asked Questions - BMW 6 Series M6 Convertible Engines

How much does a BMW 6 Series M6 Convertible S63 B44 T0 engine replacement cost?

Reconditioned pricing:
£5,750 for S63 B44 T0 engine (6 Series M6 Convertible F12, 2012-2018)
• Includes updated valve stem seals and timing chain kit
• 12-month unlimited mileage warranty included
• Save £2,500+ vs main dealer through Engine Finders

What causes oil consumption in 6 Series M6 Convertible S63 engines?

High oil consumption is caused by:
• Valve stem seal degradation accelerated by open-top heat exposure
• PCV system clogging from frequent short trips with roof down
• OEM seals (11127585993) prone to hardening after 60k miles
• All Engine Finders rebuilt S63 units include upgraded seals

Is the S63 in M6 Convertible the same as in M5 F10?

No-key differences include:
• M6 Convertible uses unique engine mounts for F12 chassis rigidity
• Different oil pan design to accommodate folding roof mechanism
• ECU tuned for softer torque delivery in open-top configuration
• Swapping an F10 M5 engine causes roof error codes and limp mode

Does BMW Service Bulletin M-12-05-20 apply to my M6 Convertible?

Yes-if your M6 Convertible is 2012-2018:
• SB M-12-05-20 mandates timing chain guide and tensioner upgrades
• Addresses rattle noise under deceleration in S63 B44 variants
• Applies specifically to F12 M6 Convertible and F13 M6 Coupé
• Engine Finders includes all SB-mandated parts in every rebuild

Why do HPFPs fail in 6 Series M6 Convertible S63 T2 engines?

HPFP failures stem from:
• High thermal load in engine bay with roof stowed
• Extended idling at shows/events causing fuel overheating
• OEM pump (13518619875) lacks durability for Competition Package tuning
• We install upgraded HPFP in all S63 T2 rebuilds

Can I use an M6 Coupé engine in my M6 Convertible?

Only with caution:
• F12 Convertible and F13 Coupé share S63 architecture but differ in mounts
• Convertible requires specific oil pan with roof mechanism clearance
• ECU must match roof control module to prevent error codes
• Engine Finders verifies F12-specific compatibility before delivery

What’s the correct engine code for 6 Series M6 Convertible?

All M6 Convertibles use:
• Early models: S63 B44 A/T0/T4 (2012-2015, 560hp)
• Later models: S63 B44 T2 (2016-2018, 600hp Competition)
• Chassis: F12 only (2012-2018)
• Verify via VIN-avoid misidentified 650i or M5 units

Are turbo wastegate issues common in M6 Convertible S63 engines?

Yes-especially in high-mileage examples:
• Frequent stop-start driving with roof down causes carbon buildup
• OEM wastegate rod (13718619878) prone to sticking after 70k miles
• All Engine Finders rebuilt engines include reinforced rod (13718619879)
• Critical for maintaining boost consistency in open-air driving

How long does M6 Convertible engine installation take?

Professional install typically requires:
16-20 hours due to roof mechanism, M DCT, and active exhaust
• Additional time for ISTA+ coding to sync with convertible top module
• Engine must be married to gearbox and roof ECU via BMW diagnostics
• Engine Finders partners offer same-week fitting at M-certified UK garages

Does Engine Finders warranty cover VANOS failures in M6 Convertible?

Yes-our 12-month unlimited mileage warranty covers:
• VANOS solenoids, actuators, and high-pressure lines
• Timing chain assembly, HPFP, and turbo wastegate
• Applies to all S63 B44 variants in F12 M6 Convertible
• No hidden exclusions-unlike generic performance engine suppliers