Bentley GT New Model Bonnet 3SD823155A

Part Number: 3SD823155A (Supersedes or alternates with 3SD823031D) Series: Third Generation (3S / 3SD) Year Range: 2018–2024 (and some early 2025 models)

The part number 3SD823155A identifies the front engine bonnet (hood) for the third-generation Bentley Continental GT and GTC. This model marked a significant shift in Bentley’s body manufacturing, utilizing high-temperature aerospace techniques to achieve its sharp, aggressive lines.

1. Key Features & Construction

• Superformed Aluminum: Like the fenders and side panels of the 3S chassis, the bonnet is crafted using Superforming (SPF) technology. The aluminum sheet is heated to 500°C and shaped by air pressure.

• Sharp “Powerline”: This manufacturing process allows for the distinctive, razor-sharp center crease and the “powerline” that emerges from between the headlamps, which would be impossible with traditional cold-stamping.

• Lightweight Design: Despite its massive size, the aluminum construction helps maintain the vehicle’s front-to-rear weight balance, crucial for the handling improvements seen in the 3S platform.

2. Component Identification & Compatibility

• Primary Code: 3SD823155A is the structural shell.

• Interchangeability: While the shell is the same for the V8, W12, and Speed models, the internal heat shielding and underside ducting may differ slightly depending on the engine cooling requirements.

• Hinge & Latch Points: This bonnet is designed for the dual-latch system. If you are replacing a bonnet after a front-end collision, you must also check the Bonnet Switches/Latch Assembly (often part of the 4W0823509 family) to ensure the “Bonnet Open” warning light functions correctly.

3. Critical Installation Notes

• Panel Alignment: Because the 3S uses very tight shut-lines (the gaps between panels), aligning this bonnet requires precision. The hinges feature multi-axis adjustment to ensure the “powerline” perfectly matches the front grille and fenders.

• Active Pedestrian Protection: This model is equipped with pyrotechnic bonnet actuators. In the event of a frontal collision with a pedestrian, the rear of the bonnet pops up by several inches to create a cushion.

  Warning: If the airbags or pedestrian protection system have deployed, the hinges and actuators must be replaced along with the bonnet.

• Aluminum Repair: SPF aluminum is “work-hardened.” Most Bentley-certified repair centers will not attempt to pull large dents out of this bonnet, as the metal can crack or lose its structural integrity. Full replacement is the standard for insurance-quality repairs.