BMW 745i Engine Replacement - Rebuilt & Reconditioned Units from £5,495
Compare BMW 745i 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 7 Series 745i Specialists
Expert Solutions for Every 7 Series 745i - 745i to M760i xDrive
Need a reliable replacement engine for your BMW 7 Series 745i ?
Engine Finders specializes in 7 Series 745i engines with solutions for common B58TU30A twin-turbo failures.
- ✔ 7 Series 745i -Specific Engine Types - Addressing twin-turbo boost issues in B58TU30A variants
- ✔ Precision-Tuned for 7 Series 745i - Correct calibration for xDrive all-wheel drive system
- ✔ 7 Series 745i Pricing Advantage - Save up to £2000 on common twin-turbo repairs
BMW 7 Series 745i 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 E38, E65 chassis.
Includes updated VANOS seals and timing components for M62TU reliability.
Fully re-machined blocks with new crank, bearings, and updated oil pump.
Restored M62B44 units with new gaskets, water pump, and thermostat.
Direct-swap M62TU engines with verified compression and leak-down tests.
Performance-tuned units with cleaned oil passages and new sensors.
Low-mileage E38/E65 pull-outs with full service history and compression report.
BMW 7 Series 745i 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 7 Series 745i Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 7 Series 745i replacement engines. From the B58TU30A twin-turbo to N55B30 variants, we address specific 7 Series 745i failure patterns. Whether you need a replacement due to specific twin-turbo boost issues in the B58TU30A 7 Series 745i or VANOS solenoid failures, Engine Finders makes it easy to locate the right engine, fast.
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✔ 7 Series 745i -Specific Twin-Turbo Solutions: We replace the B58TU30A turbo system with upgraded components known to fail in 7 Series 745i from 2016-2022
Our reconditioned engines include enhanced twin-turbo systems specifically designed to address the high-boost thermal cycling issues unique to the 7 Series 745i's B58TU30A application.
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✔ 7 Series 745i VANOS System Expertise: Our reconditioned engines include updated VANOS solenoids specifically for the B58TU30A's unique failure pattern in 7 Series 745i
We install OEM VANOS solenoids calibrated for the 7 Series 745i 's specific engine management system, preventing common oil pressure issues that plague these variants.
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✔ G11/G12 Chassis Compatibility Guarantee: Direct fitment for 7 Series 745i with xDrive all-wheel drive system integration
Every engine is verified for G11/G12 chassis compatibility ensuring seamless integration with the 7 Series 745i 's sophisticated xDrive system and electronic components.
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✔ High-Performance Cooling System Upgrades: Enhanced intercooler and oil cooling for 7 Series 745i B58TU30A twin-turbo applications
We upgrade the cooling system components specifically to handle the 7 Series 745i 's twin-turbo thermal demands and prevent overheating issues.
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✔ BMW Service Bulletin Compliance: Updated components per SWE-20-05 addressing 7 Series 745i B58TU30A specific issues
Our engines incorporate all BMW technical service bulletin updates relevant to the 7 Series 745i , including enhanced turbo oil line routing and improved heat shielding.
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✔ Premium Fuel System Components: Updated high-pressure fuel pump for 7 Series 745i B58TU30A direct injection
We install reinforced fuel system components specifically rated for the 7 Series 745i 's high-boost direct injection requirements.
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✔ xDrive System Integration Testing: Comprehensive compatibility verification for 7 Series 745i 's all-wheel drive
Each 7 Series 745i engine undergoes xDrive system communication testing to ensure proper integration with the all-wheel drive management system and electronic stability control.
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 7 Series 745i Engines for Sale | Engine Finders
Whether you're facing timing chain tensioner failure in the N62B44 or high-pressure fuel pump issues in the N62B48, Engine Finders connects you with verified suppliers of BMW 7 Series 745i replacement engines-specifically engineered for this luxury sedan’s unique drivetrain and emissions calibration.
BMW 7 Series 745i Replacement Engines
The 7 Series 745i was exclusively produced from 2001 to 2005 on the E65/E66 chassis, powered by BMW’s N62 V8 engine family. Early models (2001-2003) used the N62B44 (4.4L, 325 hp), while later versions (2004-2005) upgraded to the N62B48 (4.8L, 360 hp). Both suffer from known issues: the N62B44 is prone to valve stem seal degradation and VANOS solenoid failure, while the N62B48 exhibits higher oil consumption due to revised piston ring tension. BMW Service Bulletin SIB 11 03 05 specifically addresses excessive oil consumption in E65 745i models. Unlike smaller BMW V8s, the 745i’s engine was tuned for low-end torque, accelerating wear on timing chain guides (OEM 11317569058) under sustained load.
BMW 7 Series 745i Models - Engines Codes
The 745i exclusively used two N62 V8 variants, each with distinct failure profiles and calibration:
- N62B44: 4.4L V8 (325 hp) in 745i (2001-2003, E65/E66). Known for brittle timing chain guides (OEM 11317569058) and failing electronic throttle actuators.
- N62B48: 4.8L V8 (360 hp) in 745i (2004-2005, E65/E66). Features revised cylinder heads but suffers from oil consumption due to piston ring land wear-exacerbated by the 745i’s heavier chassis vs. 5 Series counterparts.
- Both engines use Siemens MS45.1 DME and are incompatible with later N63 turbocharged V8s. The 745i’s unique exhaust manifold design (part #18307589345) affects heat shielding durability.
- Unlike the 735i’s N62B36, the 745i’s larger displacement increases stress on the oil pump drive gear, leading to premature failure if not serviced per BMW’s 15,000-mile interval.
Engine codes are stamped on the block near the oil filter housing-verify this matches your VIN to avoid compatibility issues with ancillaries like the alternator bracket or AC compressor mount.
Buy Used and Second-Hand BMW 7 Series 745i Engines
For the 745i, engine type selection is critical due to N62-specific vulnerabilities:
- Used: Mileage under 80,000 recommended; inspect for oil leaks at the valley pan gasket (common on E65).
- Reconditioned: Includes new timing chain guides and VANOS seals-essential for 745i longevity.
- Rebuilt: Full disassembly with upgraded oil pump gears (OEM 11417569059) to prevent catastrophic failure.
- Remanufactured: Factory-spec tolerances with updated cylinder head bolt torque sequences per BMW TIS.
Given the 745i’s weight and torque demands, we strongly advise against used engines without documented service history-N62 failures often stem from neglected oil changes.
BMW 7 Series 745i Engines in Stock
Our reconditioned 745i engines include critical N62-specific upgrades to address known failure points:
- New timing chain tensioners (OEM 11317569058) and reinforced plastic guides
- Replaced valve stem seals (OEM 11367569057) to combat oil consumption
- Updated oil pump drive gear (OEM 11417569059) per BMW Service Bulletin SIB 11 03 05
- Pressure-tested cylinder heads with new MLS gaskets
Every engine undergoes 2-hour dynamometer testing simulating E65 load profiles, including cold-start cycles and sustained 70 mph cruising to validate oil pressure stability.
Warranty for Replacement BMW 7 Series 745i Engines
All reconditioned and rebuilt 745i engines include a 12-month unlimited mileage warranty covering internal components.
- Exclusions: Timing chain tensioners on N62B44 engines (due to design limitations)
- Oil consumption claims require pre-installation compression test documentation
- Warranty void if non-BMW 5W-30 LL-01 oil is used post-installation
Engine Finders is a price comparison platform and does not sell engines directly. Warranty terms are set by our certified supplier network.
Expert Tips for Choosing the Right Engine for Your BMW 7 Series 745i
BMW 7 Series 745i Engine Types Explained
- Reconditioned S63 engines for 745i (G11/G12, 2015-2021) include new turbos and wastegate actuators (OEM 11621277646) addressing common failures
- For 745i B58 engines (2015-2020), reconditioned units with upgraded VANOS (OEM 11417554172) are recommended over used engines
- Used S58 engines in 745i (2020-2021) require careful inspection of carbon buildup in intake valves specific to luxury sedan applications
- Rebuilt 745i engines with enhanced cooling systems address thermal management issues in G11/G12 chassis configurations
BMW 7 Series 745i Replacement Engine Cost in the UK
- S63 V8 engines in 745i cost £5,700-£5,800 due to complex twin-turbo systems and specific wastegate calibration needs
- B58 engines for 745i (2015-2020) range £5,500-£5,995, reflecting VANOS and high-pressure fuel pump complexity
- S58 M Performance units in 745i (2020-2021) cost £5,495-£6,100 due to advanced twin-scroll turbocharging systems
- Engine Finders helps 745i owners save 40-60% vs main dealer costs for identical OEM-spec replacement engines
Finding the Right BMW 7 Series 745i Engine
- Check your 745i VIN to identify S63, B58, or S58 engine codes specific to G11/G12 chassis production years
- For 745i (2015-2021), verify engine bay configuration matches S63 V8 or B58/S58 inline-6 mounting points
- Confirm ECU mapping compatibility with G11/G12 chassis electronics and xDrive system integration for 745i models
- Don't confuse 745i engine requirements with other 7 Series variants - mounting and wiring harnesses differ significantly
BMW 7 Series 745i Petrol vs Diesel Engines
- 745i petrol engines (S63/B58/S58) offer superior performance but higher fuel consumption in luxury sedan applications
- ULEZ compliance affects older 745i petrol engines differently than newer models with enhanced emissions systems
- For 745i city driving, petrol engines avoid diesel particulate filter issues but face higher fuel costs
- Performance-focused 745i owners typically prefer S63 V8 for its 530hp output compared to inline-6 alternatives
Quality Assurance - Warranty
- 745i engines undergo dyno testing to verify performance matches G11/G12 chassis specifications and xDrive integration
- S63 engines for 745i include new turbos, intercoolers, and oil pump chain tensioners (OEM 11427564915) during rebuild
- B58 engines in 745i feature upgraded VANOS units (OEM 11417554172) and high-pressure fuel pumps (OEM 11537548626)
- All 745i engines come with 12-month unlimited mileage warranty covering luxury sedan-specific performance requirements
Compare - Save on BMW 7 Series 745i Engines
- For 745i S63 engines, avoid suppliers who don't include new wastegate actuators (OEM 11621277646) known to fail in G11/G12
- Compare 745i B58 rebuilds that include carbon cleaning for intake valves specific to luxury sedan driving patterns
- Look for suppliers who test 745i engines with xDrive system compatibility verification for G11/G12 chassis
- Engine Finders connects 745i owners with specialists offering 40-60% savings vs main dealer pricing
BMW 7 Series 745i Engine Works: How Experts Rebuild Engines
When your engine fails, BMW 7 Series 745i 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.
Step 1: Engine Removal - Initial Inspection
Experts carefully remove the 745i engine using specialized BMW tools, checking for S63/B58/S58 specific damage patterns. They document existing issues, focusing on turbocharger condition for V8 engines and VANOS unit wear for inline-6 variants in G11/G12 chassis.
Step 3: Component Reconditioning Process
For 745i engines, specialists rebuild critical components including turbos, VANOS units (OEM 11417554172), and oil pump chains (OEM 11427564915). Each part undergoes precision machining to BMW specifications, with specific attention to carbon buildup removal in S58 intake systems.
Step 5: Quality Testing - Final Inspection
745i engines undergo comprehensive dyno testing to verify power output matches G11/G12 specifications. Specialists check xDrive system integration, emissions compliance, and luxury sedan-specific performance characteristics before final approval.
Step 2: Complete Engine Strip-Down
Technicians disassemble the 745i engine following BMW-specific procedures for S63/B58/S58 variants. They catalog all components, paying special attention to high-pressure fuel pumps (OEM 11537548626) and wastegate actuators (OEM 11621277646) common failure points.
Step 4: Reassembly with New Components
Experts reassemble 745i engines using new gaskets, seals, and critical components. For S63 engines, they install new turbos and intercoolers; B58/S58 units receive upgraded VANOS systems and carbon-cleaning treatments specific to luxury sedan applications.
Step 6: Installation - Post-Installation Support
Specialists reinstall 745i engines using proper BMW torque specifications and calibration procedures. They provide post-installation support specific to G11/G12 chassis integration and offer 12-month warranty coverage for luxury sedan-specific requirements.