7 Series Diesel Engines
from £1,500 to £4,500
Rebuilt units from £1,500 · Common codes: M57D30, N57D30, B57D30
BMW ENGINE MARKETPLACE
BMW 7 Series N57/B57/N63 Specialist Engine Replacement - Compare Quotes
Get specialist quotes from UK BMW 7 Series engine experts. Compare reconditioned & rebuilt engines for 730d to 760i - N57/B57/N63 covered. Get specialist quotes for your 7 Series.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
7 Series V8 Petrol Engines
from £2,500 to £7,500
Rebuilt units from £2,500 · Common codes: N62B44, N63B44, B58B30
7 Series V12 Engines
from £4,000 to £12,000
Rebuilt units from £4,000 · Common codes: N73B60, N74B66, N74B60
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Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best BMW 7 Series Replacement Engineto Finding the Best BMW 7 Series Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
What Are UK Drivers Paying for BMW 7 Series Engine Replacement
The table below shows typical UK rebuilt engine costs across BMW 7 Series variants, covering documented failure causes, chassis generations, engine codes, and fuel types based on current market data.
Average Market Prices
↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by BMW 7 Series Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used BMW 7 Series engines through EngineMarket.
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Variants We Cover
BMW 7 Series Engine ReplacementAll Variants Covered
7 Series 745Li
N62B44 4.4L Petrol
Rebuilt Engines: £3,000-£6,200
7 Series 740Li
N63B44/B58B30 4.4L Petrol
Rebuilt Engines: £3,200-£6,800
7 Series 750Li
N63B44TU/N63B44TU3 4.4L Petrol
Rebuilt Engines: £4,200-£8,200
7 Series 760Li
N73B60/N74B66 6.6L Petrol
Rebuilt Engines: £6,500-£12,500
Not sure which variant your BMW 7 Series is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
7 Series
Engine Codes
BMW 7 Series Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the BMW 7 Series across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Diesel Engines
Extracted from detailed diesel engine families across BMW 7 Series variants.
M57D30 - 3.0L Diesel
Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
Compatible variants
730d730d SE730d Sport740d740d Executive
Avg. rebuilt price
£1,800 - £3,200
Supply only
Technical specifications
- Fuel type
- Diesel
- Engine size
- 3.0L
- Power output
- 218-245 hp
- Years fitted
- 2002-2015
Common failures
- ●Main replacement triggers are timing chain wear, EGR / cooling faults and turbo-control issues.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
Can’t find your engine code- Enter your registration number above - we’ll instantly identify the exact unit, its technical specifications, and live replacement prices from UK BMW 7 Series engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
7 Series
Common Problems
BMW 7 Series Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The BMW 7 Series flagship saloon prioritises refined performance over absolute mechanical endurance, meaning long-term reliability heavily depends on how the N62, N63, and B57/N57 engine families are maintained. High-mileage examples frequently face catastrophic wear at critical junctions, prompting owners to weigh costly dealer diagnostics against...
BMW 7 Series N62 Valve Stem Seal Failure - Why Early V8 Engines Burn Oil
BMW 7 Series N62 Valve Stem Seal Failure
Most affected vehicles
BMW 7 Series 745i745Li
BMW 7 Series 745i, 745Li, 750i, 750Li (2002-2010, N62B44 & N62B48)
Failure mileage range
70,000 - 110,000 miles
Typical failure window
Root cause
Viton rubber seals harden under sustained high cylinder head temperatures, allowing crankcase oil to seep past valve guides into combustion chambers during overnight parking.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Valve Cover Gasket & Seal Refresh | £850 - £1,300 | £450 - £700 | Removal of intake plumbing, new external gaskets, and partial top-end access. | Only masks external leaks. Does not resolve internal oil consumption. |
| Intermediate - In-Cylinder Seal Replacement | £2,200 - £3,400 | £1,200 - £1,800 | Cylinder head removed, old seals pressed out, new high-temp seals fitted without full rebuild. | Extends engine life 20-30k miles if block and bearings are sound. |
| Full Replacement - Reconditioned V8 Engine | £10,500 - £14,500 | £4,200 - £6,200 | Full engine removal, new long block with upgraded seals, pistons, and bearings, bench tested and installed. | Restores factory compression and torque. Includes 12-month warranty. |
Our recommendation
If your BMW 7 Series N62 only exhibits mild smoke on cold starts, an intermediate seal replacement offers genuine value. However, once blue smoke appears continuously under acceleration or fault codes (P0171/P0174) trigger limp mode, the engine has already suffered cylinder washdown and bearing wear. At that stage, a full BMW 7 Series N62 reconditioned engine replacement is significantly more cost-effective than repeated partial repairs.
Compare rebuilt N62 BMW 7 Series engine prices for your 745i or 750iReplacement Engine Options
BMW 7 Series Engine TypesOptions, Costs & What to Expect
Every engine type is available through our UK network with typical price ranges based on your 7 Series variant, engine code and budget.
BMW 7 Series Reconditioned Engines (Recon)£2,500 - £6,500((supply only))
BMW 7 Series Rebuilt Engines£3,000 - £7,500((supply only))
BMW 7 Series Used Engines£1,500 - £4,500((supply only))
BMW 7 Series Remanufactured Engines£4,000 - £9,000((supply only))
BMW 7 Series Refurbished Engines£2,000 - £5,500((supply only))
Compare BMW 7 Series engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific BMW 7 Series within hours.
Engine Sizes
BMW 7 Series Engines by SizeFind the Right Displacement for Your Variant
Every engine displacement fitted to the UK BMW 7 Series is detailed below, complete with compatible engine codes, production years and known failure notes for accurate replacement matching.
The 3.0-litre straight-six diesel has served as the commercial backbone of the 7 Series range across the E65, F01 and G11 generations, delivering a balance of refined torque and official BMW efficiency standards. Introduced with common-rail injection and progressively upgraded with sequential turbocharging, this displacement remains the most frequently replaced diesel unit in the UK marketplace due to high-mileage fleet usage and exhaust gas recirculation system wear.
⚙
Engine Code(s)
M57D30, N57D30, B57D30
▣
Compatible Models (UK)
730d, 730d xDrive, 740d, 740d xDrive
ϟ
Power output
Verified by registration
△
Common Failure Points
Timing chain tensioner wear, guide rattle at high mileage, alongside EGR cooler cracking on later B57 iterations
Production Years: E65: 2002-2008, F01: 2008-2015, G11: 2015-2022
Get quotes for BMW 7 Series 3.0L diesel enginesBMW 7 Series Engines Fuel Type
BMW 7 Series Engines by Fuel Type
Choose your BMW 7 Series engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early M57 diesel units to the latest B58 petrol and B48 plug-in hybrid powertrains.
BMW 7 Series Diesel Engines
DieselThe 3.0-litre straight-six diesel has powered every 7 Series generation since the E65, dominating UK replacement enquiries due to high-mileage fleet use and exhaust system wear.
Common BMW 7 Series Diesel Engine Families
- •M57D30 - robust iron-block unit (730d E65), swirl flap and injector seal vulnerabilities
- •N57D30 - aluminium successor (730d/740d F01), rear timing chain tensioner wear concerns
- •B57D30 - current modular diesel (730d/740d G11), EGR cooler cracking at higher mileage
Found In
- •E65/E66 generation (2002-2008) - M57D30
- •F01/F02 generation (2008-2015) - N57D30, N57D30TU
- •G11/G12 generation (2015-2022) - B57D30, B57D30T0
Known For
- •Exceptional motorway refinement and official fuel economy figures
- •Timing chain guide wear and tensioner failure beyond 90,000 miles
- •EGR cooler cracking and DPF regeneration issues on later B57 units
Typical Diesel Models
- •730d
- •730d xDrive
- •730d M Sport
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BMW 7 Series Diesel Engines
DieselThe 3.0-litre straight-six diesel has powered every 7 Series generation since the E65, dominating UK replacement enquiries due to high-mileage fleet use and exhaust system wear.
Common BMW 7 Series Diesel Engine Families
- •M57D30 - robust iron-block unit (730d E65), swirl flap and injector seal vulnerabilities
- •N57D30 - aluminium successor (730d/740d F01), rear timing chain tensioner wear concerns
- •B57D30 - current modular diesel (730d/740d G11), EGR cooler cracking at higher mileage
Found In
- •E65/E66 generation (2002-2008) - M57D30
- •F01/F02 generation (2008-2015) - N57D30, N57D30TU
- •G11/G12 generation (2015-2022) - B57D30, B57D30T0
Known For
- •Exceptional motorway refinement and official fuel economy figures
- •Timing chain guide wear and tensioner failure beyond 90,000 miles
- •EGR cooler cracking and DPF regeneration issues on later B57 units
Typical Diesel Models
- •730d
- •730d xDrive
- •730d M Sport
BMW 7 Series Petrol Engines
PetrolPetrol 7 Series models span naturally aspirated straight-six and V8 architectures through to modern twin-turbo V12 units, with N62 valve seal and N63 hot restart issues driving significant replacement demand.
Common BMW 7 Series Petrol Engine Families
- •N62B44/N62B48 - early V8 (745i/750i E65), valve stem seal hardening and oil consumption
- •N63B44 - twin-turbo V8 (750i F01/G11), notorious hot restart and piston ring wear
- •N73B60/N74B66 - V12 flagship (760i/760Li), complex ignition and fuel system vulnerabilities
Found In
- •E38 generation (1994-2001) - M52, M62 naturally aspirated units
- •E65/E66 generation (2002-2008) - N62 V8, N73 V12
- •F01/F02 generation (2008-2015) - N63 twin-turbo V8, N74 V12
Known For
- •Silky smooth power delivery and effortless overtaking capability
- •N62 valve stem seal failure causing blue smoke on cold starts
- •N63 hot restart stalling and excessive oil consumption at 60k-90k miles
Typical Petrol Models
- •728i
- •730i
- •740i
BMW 7 Series Plug-in Hybrid (PHEV) Engines
PHEVThe 740e and 745e plug-in hybrid variants combine a turbocharged B48 petrol engine with an electric motor for reduced emissions while retaining flagship refinement.
BMW 7 Series PHEV Engine Codes
- •B48B20H - 2.0L turbo petrol hybrid unit (740e/745e G11/G12), integrated electric motor coupling
- •48-volt electrical architecture recovers braking energy for electric torque assistance
- •Electric-only range of up to 30 miles for urban commuting before petrol engagement
Found In
- •740e xDrive (2016-2022)
- •745e xDrive / 745Le xDrive (2019-2022)
Important Notes
- •No full electric (BEV) variant of the 7 Series exists in the UK market
- •PHEV engine replacement requires specialist high-voltage certification and battery health assessment
- •Availability of rebuilt PHEV-specific long blocks is more limited than standard petrol units
Not sure which fuel type your BMW 7 Series has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK BMW 7 Series specialists.
Engine YearsGet quotes for 1994-2001 BMW 7 Series replacement engines →
BMW 7 Series Engines by YearWhat Was Fitted & WhenBMW 7 Series Engines by Year - What Was Fitted & When
This technical timeline covers every major engine change across the BMW 7 Series production history, organised so owners can quickly identify their engine code and compare rebuilt replacement prices from UK specialists.
⚙Key Changes
- ✓Launch of third-generation 7 Series with aluminium-intensive body construction
- ✓Introduction of M52 and M62 engine families with double-VANOS variable valve timing
- ✓Long-wheelbase E38 LWB variants introduced for enhanced rear passenger comfort
- ✓Final year saw transition to N62 V8 preparation for E65 successor
▣Main Engines
M52B28- 2.8L petrol (728i)
M54B30- 3.0L petrol (730i LCI)
M62B35- 3.5L petrol (735i)
M62B44- 4.4L petrol (740i)
M73B54- 5.4L V12 petrol (750i/750Li)
▰Popular Models
- •BMW 728i
- •BMW 730i
- •BMW 735i
- •BMW 740i
- •BMW 750i/750Li
🔧Known For
- ✓Exceptional build quality and timeless Pininfarina-influenced styling
- ✓M62 V8 valve cover gasket and cooling system vulnerabilities at high mileage
- ✓M73 V12 complexity demands specialist maintenance and budget for replacement
- ✓Strong enthusiast following ensures steady parts and rebuilt engine availability
Engine Codes Covered:
M52B28M54B30M62B35M62B44M73B54Not sure which year your BMW 7 Series was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK BMW 7 Series specialists.
FAQ