BMW 7 Series 745i Engine ReplacementCompare Prices & Get Quotes

A BMW 7 Series 745i engine replacement cost depends on the generation and engine code. N62B44 replacements for E65 models typically range from £1,800-£3,500 for used units, £3,500-£6,000 for reconditioned, and £4,500-£7,500 for rebuilt with warranty. Older M60B40 and M62B44 engines are generally cheaper to replace, while the rare M102/M106 turbo engines require specialist sourcing.

• E65 N62B44 is the most common 745i replacement
• Valve stem seal failure is the primary reason for N62 replacement
• Fitting adds approximately 12-18 hours of labour at specialist rates

The most common symptom is blue or white smoke from the exhaust on cold startup, clearing after a few seconds. As the seals worsen, you may notice increased oil consumption between services, a slight misfire on startup, and eventually the engine warning light may illuminate.

• This is most common on N62B44 engines in E65 745i models (2002-2005)
• Valve stem seal replacement typically costs £1,800-£3,200 at a specialist
• Ignoring the issue can lead to catalytic converter damage
• Rebuilt engines include upgraded seals to prevent recurrence

Yes - if your BMW 7 Series 745i is otherwise in good condition, a rebuilt engine from £3,500-£7,500 is often worthwhile. With 745i values ranging from £3,000-£15,000 depending on generation and condition, replacement cost typically represents a reasonable proportion of the vehicle's value.

• E23 745i values (£3k-£15k+): assess on a case-by-case basis
• E32/E38 745i values (£3k-£8k): repair often better value than full replacement
• E65 745i values (£3k-£8k): valve seal repair often better value
• 12-month warranty provides peace of mind on the investment

Most BMW 7 Series 745i engine replacements take 1-3 days for supply and fit at a specialist garage. The complexity varies by generation - older M102/M106 turbo engines require more specialist attention, while N62 V8 replacements are more routine for BMW specialists.

• Engine removal and installation requires specialist equipment
• Long wheelbase (Li/LWB) variants add approximately 1 hour to fitting time
• Collection and delivery options are available nationwide
• Most suppliers can dispatch a replacement engine within 24-72 hours

Yes - every rebuilt BMW 7 Series 745i engine supplied through EnginesMarket comes with a minimum 12-month unlimited-mileage warranty. Used engines typically have 3-6 month warranties, while reconditioned units often include 6-12 months of cover.

• Rebuilt engines: 12-month unlimited-mileage warranty standard
• Extended warranty options are available with some suppliers
• All warranties cover parts and workmanship
• Always confirm exact warranty terms before purchase

The BMW 745i has always been the entry-level V8 7 Series (or turbo straight-six in the E23 era), while the 750i sits above it with a larger, more powerful engine. In the E65 generation, the 745i uses a 4.4-litre V8 (N62B44, 333hp), while the 750i uses a 4.8-litre V8 (N62B48, 360hp). In the E32 era, the 745i used a 4.0-litre V8 (M60B40, 286hp) while the 750i used a 5.0-litre V12 (M70B50, 300hp).

• 745i engines are generally cheaper to replace than 750i units
• 745i offers better fuel economy; 750i offers more performance
• Engine codes differ significantly across all generations
• Enter your registration above to confirm which engine you have