Cullinan Standard V12 Engines
from £14,000 to £16,500
Rebuilt units from £14,000 · Common codes: N74B68A, N74B68, N74B68U2, N74B66
Get specialist quotes from UK Rolls Royce Cullinan engine experts. Compare reconditioned & rebuilt N74B68 V12 engines for Cullinan to Black Badge. Get specialist quotes for your Cullinan.
Cullinan Standard V12 Engines
from £14,000 to £16,500
Rebuilt units from £14,000 · Common codes: N74B68A, N74B68, N74B68U2, N74B66
Cullinan Black Badge V12 Engines
from £15,500 to £18,000
Rebuilt units from £15,500 · Common codes: N74B66TU, N74B66M, N74B66S, N74B66X
Cullinan Series II V12 Engines
from £16,000 to £19,500
Rebuilt units from £16,000 · Common codes: N74B66M, N74B68U2, N74B66, N74B68A

Most replacements completed within 3-5 days.


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Not sure which variant your Rolls Royce Cullinan is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Rolls Royce Cullinan 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.
Extracted from detailed petrol and performance engine families across Rolls Royce Cullinan variants.

N74B68A - 6.75L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£14,000 - £16,500
Supply only
Technical specifications
Common failures
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 Rolls Royce Cullinan engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Rolls Royce Cullinan's N74 V12 delivers exceptional refinement but has documented failure patterns per RR-TSB-2021-07 and RR-TSB-2021-09. High-pressure fuel pump failure, turbo wastegate rattle, and oil consumption dominate replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components addressing original...
High-Pressure Fuel Pump Failure
Most affected vehicles
Rolls Royce Cullinan Standard, Black Badge, Extended (2018-2021, N74B68/N74B66)
Failure mileage range
50,000-80,000 miles
Typical failure window
Root cause
HPFP internal seal degradation under high thermal load causes pressure loss, hard starting, and reduced power output.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - HPFP Replacement Only | £4,500 - £6,500 | £2,800 - £4,200 | Replace HPFP unit with updated design; ECU adaptation required | Viable if caught early; does not address downstream damage from fuel starvation |
| Intermediate - Fuel System Overhaul | £7,500 - £10,500 | £4,500 - £7,000 | HPFP + injectors + high-pressure lines; full system pressure test | Addresses collateral damage; suitable for moderate-mileage vehicles |
| Full Replacement - Rebuilt N74 Engine | £22,000 - £28,000 | £14,000 - £18,000 | Complete rebuilt V12 with upgraded HPFP, bench-tested, 12-month warranty | Best value for high-mileage or multiple-failure vehicles; eliminates recurrence risk |
Our recommendation
On a Rolls Royce Cullinan valued £200,000+, preventative HPFP replacement at 50k miles offers better value than waiting for catastrophic failure. If multiple symptoms exist (hard starting + oil consumption + turbo rattle), a rebuilt engine with upgraded components provides long-term peace of mind.
Compare rebuilt N74B68 engine prices for your Rolls Royce Cullinan
Every Rolls Royce Cullinan engine type is available through our UK network with typical price ranges based on variant, N74 engine code and budget.
Compare Rolls Royce Cullinan 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 Rolls Royce Cullinan within hours.

Every displacement fitted to the Rolls Royce Cullinan is listed with compatible N74 engine codes, production years and common failure notes for accurate replacement matching.
The 6.75-litre N74 twin-turbo V12 powered every UK Cullinan variant from launch, delivering 571-591hp with signature Rolls-Royce refinement and torque-rich acceleration.
Engine Code(s)
N74B68A, N74B66, N74B66TU, N74B66M, N74B66S, N74B66X, N74B68U2
Compatible Models (UK)
Standard (2018-2023), Black Badge (2020-2023), Series II (2024-present), Extended (2019-present), Coachbuild
Power output
Verified by registration
Common Failure Points
HPFP failure (RR-TSB-2021-07), turbo wastegate rattle, valve stem seal oil consumption, VANOS solenoid clogging
Production Years: 2019-present
Compare Rolls Royce Cullinan 6.75L petrol engine prices
Choose your Rolls Royce Cullinan engine by fuel type to compare realistic replacement prices, known N74 V12 issues, and compatible UK supply options - from Standard 571hp to Black Badge 591hp.
Every UK Cullinan variant uses the N74 twin-turbo petrol V12, with output ranging from 571hp (Standard) to 591hp (Black Badge) and updated HPFP designs post-2022.
Common Rolls Royce Cullinan Petrol Engine Families
Found In
Known For
Typical Petrol Models
Every UK Cullinan variant uses the N74 twin-turbo petrol V12, with output ranging from 571hp (Standard) to 591hp (Black Badge) and updated HPFP designs post-2022.
Common Rolls Royce Cullinan Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Rolls Royce Cullinan 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 Rolls Royce Cullinan specialists.

This section covers all major N74 V12 engine changes across the Cullinan's production timeline, organised so owners can quickly identify their engine code and compare rebuilt prices from UK specialists.
⚙Key Changes
▣Main Engines
N74B68A- 6.75L petrol (Standard, Extended)
▰Popular Models
🔧Known For
Engine Codes Covered:
N74B68AN74B68