McLaren MP4 12C 650s Drive Shaft 11G0248CP.01
part number 11G0248CP.01 refers to the Genuine McLaren Rear Drive Shaft (Axle) assembly, designed for the first generation of Super Series vehicles, specifically the MP4-12C and the 650S.
This component is the critical link between the 7-speed Seamless Shift Gearbox (SSG) and the rear hubs, engineered to handle the 600hp+ output of the M838T 3.8L twin-turbo V8.
Technical Specifications
| Feature | Details |
| OEM Part Number | 11G0248CP.01 |
| Compatibility | MP4-12C (Coupe/Spider), 650S (Coupe/Spider) |
| Position | Rear (Interchangeable Left or Right) |
| Joint Type | High-Velocity Constant Velocity (CV) Joints |
| Construction | High-tensile heat-treated steel shaft |
| Inboard Spline | Designed for McLaren SSG Differential output |
Key Highlights & Common Failure Points
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Interchangeability: Unlike many performance cars, the drive shafts for the 12C and 650S are generally non-directional, meaning the same part number (11G0248CP.01) is used for both the Rear Left and Rear Right positions.
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Boot Integrity: The CV boots on these shafts are subjected to extreme heat due to their proximity to the exhaust and turbochargers. If the boot tears, the specialized synthetic grease escapes, leading to rapid joint wear and clicking noises during cornering.
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Vibration Management: These shafts are precision-balanced from the factory to prevent drivetrain harmonics. If you experience a “shudder” under heavy acceleration, it is often a sign of internal wear within the inboard CV tripod.
Installation Notes
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Axle Nut: The central hub nut is a “one-time use” torque-to-yield component. It is highly recommended to replace the nut whenever the drive shaft is removed to ensure it does not back off under load.
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Transmission Fluid: When pulling the inboard side of the shaft out of the gearbox, be prepared for a small amount of DCT fluid loss. It is a good opportunity to check the fluid level and condition.
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Torque Spec: The rear hub nut requires a high torque setting (typically in the region of 420 Nm / 310 lb-ft, though you should verify the specific VIN-based shop manual for your model year).
Compatibility Note
While this part is standard for the 12C and 650S, it is not compatible with the 675LT or the 570S. The 675LT utilizes reinforced shafts with different spline counts to handle its higher torque curves, and the 570S (Sports Series) uses the 11G0296CP variant.
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