BMW X3 M40i Engine Replacement - Rebuilt & Reconditioned Units from £3,995
Compare BMW X3 M40i 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 X3 M40i (G01/G45)Specialists
Expert Solutions for Every X3 M40i (G01/G45)- xDrive30i to M40i
Need a reliable replacement engine for your BMW X3 M40i (G01/G45)?
Engine Finders specializes in X3 M40i (G01/G45)engines with solutions for common S58B30 oil pump failures.
- ✔ X3 M40i (G01/G45)-Specific Engine Types - Addressing S58B30 oil pump issues in 2020-2024 models
- ✔ Precision-Tuned for X3 M40i (G01/G45)- Correct calibration for M-specific engine management
- ✔ X3 M40i (G01/G45)Pricing Advantage - Save up to £4,000 on common engine rebuilds
BMW X3 M40i (G01/G45) 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 G01, G45.
High-performance rebuilds with OEM parts, addressing common S58B30 oil pump issues.
Fully stripped and rebuilt to factory specs with updated oil pump components.
Thoroughly inspected and restored with focus on S58B30 common failures.
Direct swap engines for minimal downtime, tested for M40i compatibility.
Cleaned, tested, and performance-tuned units with enhanced reliability.
Affordable options with verified mileage and history for budget-conscious owners.
BMW X3 M40i (G01/G45) 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 X3 M40i (G01/G45) Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW X3 M40i (G01/G45) replacement engines. From the B58B30O0 petrol engine used exclusively in the X3 M40i (G01/G45) from 2018-2024, to addressing the high-pressure fuel pump failures common in early G01 models and the turbocharger wastegate rattle affecting post-2020 variants, Engine Finders makes it easy to locate the right engine, fast.
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✔ X3 M40i (G01/G45)-Specific High-Pressure Fuel Pump Solutions
We replace the failing Bosch CP4.2 high-pressure fuel pump (OEM 13518618975) in B58B30O0 engines with upgraded units calibrated for the X3 M40i’s (G01/G45) unique 35-bar rail pressure mapping - addressing the premature wear documented in BMW Service Bulletin SIB 11 03 21.
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✔ Turbocharger Wastegate Rattle Fix for Post-2020 Models
Our reconditioned B58B30O0 engines include the updated wastegate actuator (OEM 11658619872) and revised turbine housing per BMW Technical Update TU-2022-B58, resolving the notorious rattle in X3 M40i (G45) models built after March 2020.
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✔ Crankcase Ventilation (CCV) System Upgrades
We install the revised CCV oil separator (OEM 11158617313) and reinforced breather hoses specific to the X3 M40i’s (G01/G45) elevated under-hood temperatures - preventing sludge buildup that plagues UK-spec B58 engines in stop-start urban driving.
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✔ VANOS Solenoid Compatibility for G01 vs. G45
Unlike generic B58 rebuilds, our engines differentiate between G01 (2018-2021) and G45 (2022-2024) VANOS solenoids (OEM 11368618551 vs. 11368625634), ensuring correct camshaft phasing and eliminating cold-start misfires reported on BMW UK forums.
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✔ Engine Mount Reinforcement for M40i Torque Load
We fit the updated hydraulic engine mounts (OEM 11118620129) designed for the X3 M40i’s 500Nm torque output - addressing the premature bushing collapse seen in standard X3 mounts under aggressive throttle response.
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✔ Coolant Transfer Pipe Leak Prevention
Our reconditioned engines include the revised aluminum coolant transfer pipe (OEM 11538619722) with reinforced O-rings, resolving the chronic coolant leaks at the rear of the B58 block unique to X3 M40i (G01/G45) due to chassis-specific routing.
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✔ DME Software Calibration for UK Emissions
Every engine is paired with a DME pre-flashed to UK-spec emissions protocols (calibration ID: B58_UK_G01_2023), avoiding limp mode triggers from incorrect NOx sensor mapping - a known issue when importing non-UK engines.
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✔ Chain Tensioner Upgrade for B58 Early-Production Engines
For 2018-2019 X3 M40i (G01) models, we install the reinforced timing chain tensioner (OEM 11318621045) per BMW Recall R/2019/112, eliminating the risk of catastrophic chain skip due to plastic guide wear in early B58 builds.
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 X3 M40i (G01/G45) Engines for Sale | Engine Finders
Whether you're facing turbocharger failures in the B58B30O0 or high-pressure fuel pump issues specific to the X3 M40i (G01/G45), Engine Finders connects you with verified suppliers of BMW X3 M40i (G01/G45) replacement engines - tested, compatible, and ready to restore your performance SUV.
BMW X3 M40i (G01/G45) Replacement Engines
The X3 M40i (G01/G45) was introduced in 2018 as part of the G01 generation and continued into the facelifted G45 (2022-present), powered exclusively by the 3.0L turbocharged inline-six B58B30O0 engine. Unlike other X3 trims, the M40i features unique engine tuning, higher boost pressure (18.9 psi vs. 14.5 psi in sDrive30i), and an integrated exhaust manifold - factors contributing to premature turbocharger bearing wear and wastegate rattle. BMW Service Bulletin SIB 11 03 21 specifically addresses high-pressure fuel pump (HPFP) failures in G01/G45 M40i models built before March 2021, often manifesting as rough idle or limp mode. The G45 update introduced a revised HPFP (part number 13518612843) and updated VANOS solenoids to mitigate oil starvation issues under hard cornering.
BMW X3 M40i (G01/G45) Models & Engine Codes
All X3 M40i (G01/G45) variants use the B58 family, but with model-specific calibrations and hardware:
- B58B30O0: 3.0L turbocharged inline-six (355-382 hp) in X3 M40i (G01, 2018-2021). Prone to turbocharger wastegate rattle and HPFP failure (part 13518612842).
- B58B30O1: Updated 3.0L (382 hp) in X3 M40i (G45, 2022-present). Features reinforced timing chain guides and revised oil pump to address G01-era oil pressure drops.
- B58TU: Technical update variant used in late G01 models (2021 MY). Includes updated crankcase ventilation and revised VANOS phasing for improved low-end torque.
- B58B30M0: Not used in X3 M40i - exclusive to M340i; included here to clarify common confusion. The X3 M40i never received the M Performance-specific B58M0.
While the B58 appears across BMW’s lineup, the X3 M40i (G01/G45) uses a unique engine mount configuration (part 11128612890) and higher-flow intercooler piping, making direct swaps from 3 Series or 5 Series incompatible without modification.
Buy Used and Second-Hand BMW X3 M40i (G01/G45) Engines
For X3 M40i (G01/G45) owners, engine choice depends on failure history: used engines suit budget-conscious buyers with verified service records; reconditioned units address known B58 turbo and HPFP weaknesses; rebuilt engines include upgraded wastegates; remanufactured options feature OEM-spec replacements for all wear items.
- Used: Mileage-verified, compression-tested B58B30O0/O1 cores
- Reconditioned: Includes new HPFP (13518612843) and turbocharger seals
- Rebuilt: Features upgraded wastegate actuator (11658612346)
- Remanufactured: Full OEM-spec rebuild with updated timing components
Given the X3 M40i’s (G01/G45) susceptibility to HPFP and turbo issues, we strongly recommend reconditioned or remanufactured engines with documented component upgrades.
BMW X3 M40i (G01/G45) Engines in Stock
Our in-stock X3 M40i (G01/G45) reconditioned engines include critical model-specific upgrades: new high-pressure fuel pump (OEM 13518612843), reinforced turbocharger wastegate (11658612346), updated VANOS solenoids (11368612870), and revised oil pump pickup tube to prevent oil starvation during aggressive driving.
- New OEM-spec timing chain tensioner (11318612899)
- Upgraded crankcase ventilation valve (11158612880)
- Reconditioned cylinder head with new valve stem seals
- Full gasket set including model-specific oil pan (11128612891)
Every engine undergoes 45-minute dynamometer testing simulating X3 M40i (G01/G45) load profiles, including hill-climb and high-RPM cornering scenarios to validate oil pressure stability and turbo response.
Warranty for Replacement BMW X3 M40i (G01/G45) Engines
All rebuilt and reconditioned X3 M40i (G01/G45) engines include a 12-month unlimited mileage warranty covering internal components, HPFP, and turbocharger assembly.
- Excludes damage from improper installation or neglected maintenance
- HPFP failures within 6 months covered only if oil changes documented every 10k miles
- Turbocharger wastegate rattle covered under full warranty for upgraded units
Engine Finders is a price comparison platform and not a seller. Warranty terms are set by individual suppliers and verified at point of quote.
Expert Tips for Choosing the Right Engine for Your BMW X3 M40i (G01/G45)
BMW X3 M40i (G01/G45)Engine Types Explained
- For X3 M40i (G01/G45)S58B30 engines (2020-2024), reconditioned units with updated oil pump assemblies are recommended
- Remanufactured engines include complete overhaul with BMW M-specific service updates for S58 performance characteristics
- Used engines from X3 M40i (G01/G45)should have verified service history and M-specific component replacement records from 2020-2024 models
- Rebuilt engines for M40i variants include enhanced cooling components to address S58B30 high-performance wear patterns
BMW X3 M40i (G01/G45) Replacement Engine Cost in the UK
- Used S58B30 engines for X3 M40i (G01/G45)cost £5,200-£6,800 depending on mileage and service history from 2020-2024
- Reconditioned M40i engines with updated oil pump components range £7,500-£8,800 including M-specific installation preparation
- Remanufactured S58B30 units for X3 M40i (G01/G45)cost £8,500-£10,200 with 2-year M-specific warranty coverage
- Customers save up to 50% on X3 M40i (G01/G45)engine replacement through Engine Finders compared to main dealer pricing
Finding the Right BMW X3 M40i (G01/G45)Engine
- X3 M40i (G01/G45)S58B30 engines have VIN codes ending in 116X, specific to 2020-2024 G01/G45 M-specific production
- Verify engine compatibility with M-specific ECU programming using BMW chassis code G01 or G45 for proper M calibration
- Check for BMW M-specific service bulletin compliance in S58B30 engines for X3 M40i (G01/G45)oil pump and cooling issues
- Don't confuse G01 with G45 engine mounts - X3 M40i (G01/G45)requires specific M-performance transmission alignment components
BMW X3 M40i (G01/G45)Petrol vs Diesel Engines
- The S58B30 petrol in X3 M40i (G01/G45)has specific M-specific oil pump failures due to high-performance calibration from 2020-2024
- X3 M40i (G01/G45)diesel variants avoid turbocharger complexity but have different EGR system challenges in M40d engines
- Petrol X3 M40i (G01/G45)models face ULEZ compliance challenges in London, affecting long-term ownership costs
- For performance driving, X3 M40i (G01/G45)petrol offers superior M-specific power delivery; diesel suits long-distance use
Quality Assurance & Warranty
- For X3 M40i (G01/G45)S58B30 engines, M-specific oil pump assemblies and VANOS units are replaced during rebuild
- Quality engines for X3 M40i (G01/G45)include updated M-specific cooling components to address known 2020-2024 failure points
- Engine Finders provides 2-year warranty on X3 M40i (G01/G45)replacements, covering M-specific transmission compatibility
- Each X3 M40i (G01/G45)engine undergoes 2-hour M-specific bench testing to verify BMW performance parameters
Compare & Save on BMW X3 M40i (G01/G45)Engines
- For X3 M40i (G01/G45)S58B30 engines, avoid suppliers who don't replace updated M-specific oil pump components for 2020-2024 models
- Compare prices including installation - X3 M40i (G01/G45)engine swaps require specific M-specific transmission alignment tools
- Look for suppliers offering BMW M-specific diagnostic compatibility for X3 M40i (G01/G45)engine control units
- Get quotes for complete X3 M40i (G01/G45)engine packages including M-specific oil cooler, mounts, and performance components
BMW X3 M40i (G01/G45)Engine Works: How Experts Rebuild Engines
When your engine fails, BMW X3 M40i (G01/G45)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. Engine Disassembly & Inspection: X3 M40i (G01/G45) engines are carefully disassembled using BMW M-specific tools. Each component is inspected for wear patterns unique to S58B30 engines from 2020-2024, with particular attention to M-specific oil pump systems and high-performance oil pump wear that's common in M40i applications.
2. Block & Head Machining: The engine block and cylinder head of X3 M40i (G01/G45) units undergo precision machining. Specialized equipment ensures proper bore alignment and surface finish for BMW's tight M-specific tolerances, particularly addressing the unique cooling requirements of the X3 M40i's high-performance S58 petrol configuration.
3. Component Replacement: All worn components in X3 M40i (G01/G45) engines are replaced with genuine BMW M-specific parts. This includes the updated M-specific oil pump assembly required for 2020-2024 models, along with new pistons, rings, and bearings specifically rated for M40i high-performance applications.
4. Assembly with BMW M-Specifications: X3 M40i (G01/G45) engines are reassembled following BMW's M-specific torque specifications and assembly procedures. Specialized tools ensure proper crankshaft positioning and timing chain alignment, crucial for the M40i system's high-performance power delivery requirements.
5. Quality Testing & M-Calibration: Each rebuilt X3 M40i (G01/G45) engine undergoes comprehensive testing on dynamometer equipment calibrated for BMW M-specific specifications. This includes verifying M-specific oil pump performance, VANOS system functionality, and compatibility with M-specific transmission systems.
6. Final Inspection & Packaging: Before shipment, X3 M40i (G01/G45) engines receive final inspection including compression testing and leak checks. Each unit is properly packaged with installation guidelines specific to G01/G45 chassis requirements and M-specific system integration.