2017 ON McLAREN 720S ENGINE 4.0 PETROL M840T – 2,735 MILES – 711 BHP
McLaren 720S 4.0-litre V8 petrol engine, engine code M840T, advertised with only 2,735 miles and 711 BHP. Suitable for compatible McLaren 720S applications from 2017 onward.
PRODUCT SPECIFICATIONS
- Brand: McLaren
- Model: 720S
- Model Year: 2017 onward
- Engine Code: M840T
- Displacement: 4.0L / 3,994 cc
- Configuration: V8
- Fuel Type: Petrol / Gasoline
- Induction: Twin Turbocharged
- Power: 711 BHP advertised
- Factory Output: Approximately 710 bhp / 720 PS
- Mileage: 2,735 miles
- Product: Engine / Motor
- Condition: Used
- Engine Number: Confirm
- Fitment: McLaren 720S — VIN verification recommended
McLAREN M840T ENGINE
The M840T is the 4.0-litre twin-turbocharged V8 engine used in the McLaren 720S.
The engine has:
- 3,994 cc displacement
- V8 configuration
- Twin turbochargers
- Petrol fuel system
- Mid-mounted installation
- Dry-sump lubrication
- McLaren M840T engine specification
McLaren’s published 720S specification gives the engine 720 PS (710 bhp) and 770 Nm of torque. The advertised listing states 711 BHP, which is effectively consistent with the commonly quoted 710 bhp factory figure.
LOW-MILEAGE ENGINE – 2,735 MILES
This engine is advertised with only 2,735 miles.
For a low-mileage used McLaren engine, buyers should verify the mileage through available documentation, including:
- Donor vehicle VIN
- Service history
- Engine number
- ECU information
- Vehicle mileage records
- Removal documentation
- Running video, where available
- Diagnostic test results
ENGINE CONDITION
The engine is listed as a used low-mileage unit.
Before installation, verify:
- Compression
- Leak-down results
- Oil pressure
- Turbocharger condition
- Oil leaks
- Coolant leaks
- Engine fault codes
- Crankcase condition
- Ancillary components
- Engine number
- Running condition
Photographs and supporting test information should be reviewed before purchase.
COMPLETE ENGINE CONTENTS
If supplied as a complete engine, confirm exactly which components are included.
Depending on the unit, this may include:
- Engine block
- Cylinder heads
- Crankshaft
- Pistons
- Connecting rods
- Twin turbochargers
- Intake components
- Fuel system components
- Exhaust manifolds
- Alternator
- Starter motor
- Sensors
- Wiring
- Ancillary components
- Engine mounts
ECU, transmission, wiring harnesses and other vehicle electronics should not be assumed to be included unless specifically stated.
FITMENT
The advertised application is:
McLaren 720S — 2017 onward
The M840T engine should be matched to the vehicle’s exact specification.
Verify:
- VIN
- Engine code
- Engine number
- Model year
- 720S Coupe or Spider
- ECU compatibility
- Ancillary components
- Transmission compatibility
- Included equipment
ENGINE CODE: M840T
The M840T designation is important when sourcing a replacement engine for the McLaren 720S.
Do not select an engine solely based on:
- 4.0L displacement
- V8 configuration
- Horsepower
- Vehicle model
The engine code and physical specification should match the recipient vehicle.
INSTALLATION
Installation should be carried out by a qualified McLaren specialist.
- Verify the M840T engine code.
- Confirm the engine number.
- Verify donor and recipient VIN information.
- Compare the replacement engine with the original.
- Inspect turbochargers and ancillary components.
- Install the engine according to McLaren service procedures.
- Connect cooling, fuel, intake and exhaust systems.
- Connect engine wiring and sensors.
- Connect the transmission.
- Fill fluids according to manufacturer specifications.
- Program or synchronize applicable electronic systems.
- Scan the vehicle for diagnostic faults.
- Check oil pressure and fluid temperatures.
- Inspect for leaks.
- Complete a controlled road test.
IMPORTANT FITMENT NOTICE
The advertised power figure is 711 BHP, while McLaren commonly specifies the 720S at approximately 710 bhp / 720 PS.
Before purchase, confirm the exact engine specification and identification details supplied with the unit.
BUYER CHECKLIST
- Vehicle: McLaren 720S
- Year: 2017 onward
- Engine Code: M840T
- Displacement: 4.0L / 3,994 cc
- Configuration: V8
- Fuel: Petrol
- Induction: Twin Turbo
- Advertised Power: 711 BHP
- Factory Power: Approx. 710 BHP / 720 PS
- Advertised Mileage: 2,735 miles
- Condition: Used
- Engine Number: Confirm
- Turbochargers: Confirm
- ECU: Confirm
- Ancillaries: Confirm
- Donor VIN: Confirm
- VIN Compatibility: Recommended
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