McLaren 720s Engine Cover 14A4584CP
14A4584CP refers to the Rear Engine Bay Cover Deck Lid Panel for the McLaren 720S (Coupe models). This is the black, ventilated exterior trim panel that sits directly behind the glass engine window (or replaces the solid panel) to protect the engine bay and assist with heat dissipation.
Part Details: 14A4584CP
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Application: Specifically for the 720S Coupe (2017–2023).
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Note on Fitment: This part number is generally for the Coupe only. The 720S Spider uses a different configuration (often part 14AB449SP) due to the retractable hardtop mechanism.
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Material: The standard OEM part is a high-grade, heat-resistant composite finished in black.
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Function: It acts as a “deck lid” or “service cover,” providing access to the engine’s upper components while maintaining the car’s aerodynamic profile.
2026 Market Pricing & Availability
Because this part is often replaced by owners upgrading to visible carbon fiber, there is a steady supply of “take-off” OEM units on the secondary market.
| Condition | Estimated Price (2026) | Sourcing Strategy |
| Used (OEM Black) | Best found on eBay or specialized exotic recyclers like FerrParts. | |
| New OEM (Dealer) | $1, | Purchased through McLaren authorized service centers. |
| Aftermarket Carbon Fiber | Brands like DarwinPro, CMST, or Novitec offer carbon replacements. |
Buying Advice
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Inspect the Mesh: The 14A4584CP panel features a fine mesh grille. If buying used, ensure the mesh isn’t dented or clogged with road debris, as this can affect engine cooling.
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Hardware: The panel is secured by specific clips and bolts. When purchasing a used unit, verify if these are included; if not, you may need to source the mounting kit separately to avoid “panel rattle” at high speeds.
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Upgrade Opportunity: If your 14A4584CP is damaged, many owners take this chance to upgrade to the visible carbon fiber version (found on high-spec or MSO cars), which significantly increases the resale appeal of the vehicle.
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