McLaren 600LT diffuser carbon headlight sill splitter
the McLaren 600LT carbon fiber components represent the peak of the “Longtail” philosophy—reducing weight while maximizing aerodynamic downforce. Many 600LTs came with the MSO (McLaren Special Operations) Exterior Carbon Fiber Packs, but sourcing these individual pieces for a repair or upgrade requires specific part identification.
1. Component Breakdown & Part Numbers
The 600LT utilizes “visual” carbon fiber with a specific $2\times2$ twill weave.
| Component | Position | Common Part Number | Description |
| Rear Diffuser | Rear Lower | 13A4222CP |
Large, multi-finned aero unit. |
| Front Splitter | Front Lower | 13A3362CP |
Extended LT profile for front downforce. |
| Headlight Surround | Front L/R | 13A3951CP / 13A3952CP |
The “eye” socket trim in gloss carbon. |
| Door Sill (Outer) | Side L/R | 13B3532CP.MSO |
The visible sill when the door is open. |
| Side Sill (Inner) | Interior L/R | 13B0533CP |
Often features “600LT” branding. |
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