Left door for AUDI R8 Cabriolet, complete with window, year of manufacture 2014, color grey.

Application: Audi R8 Type 42 Facelift (2013–2015) Body Style: Spyder (Cabriolet) Part Number: 427.831.021.A (Door Shell) Color: Grey (Possible Audi codes: Daytona Grey Pearl – LZ7S or Suzuka Grey – LY7F)

The 2014 Audi R8 Spyder door is a precision-engineered aluminum component. Because the Spyder lacks a fixed roof structure, the door assembly is a critical part of the vehicle’s side-impact reinforcement. A “complete” door from this era includes the internal crash bars, window regulator, glass, and the specific side-mirror mounting hardware.

Technical Specifications & Features

• Material: Full aluminum construction for weight reduction and corrosion resistance.

• Window Glass: Tinted safety glass, specifically curved for the Spyder’s unique A-pillar and convertible top sealing profile.

• Sealing System: Features the “short-drop” logic; the window automatically drops approximately 10mm when the handle is touched to clear the roof seals, then raises back up once the door is closed.

• Internal Hardware: * Window Regulator: Heavy-duty motor-driven cable system.

  • Lock Actuator: Integrated with the Audi central locking and alarm system.

  • Wiring Harness: 2014 facelift-specific harness for side-mirror heating, dimming, and power-folding functions.

Facelift (2014) Specifics

The 2014 model is part of the Type 42 Facelift. While the outer skin remains largely the same as earlier models, the internal electronics and side-mirror connectors were updated.

• Side Mirrors: Facelift doors typically accommodate the revised LED indicator mirrors.

• Trim: The interior door handle and switches often feature the updated chrome-finish accents introduced in 2013.

Installation & Alignment Notes

1. Hinge Alignment: Audi R8 doors are notoriously sensitive to alignment. Even a 1mm deviation at the hinge can cause wind noise at high speeds or prevent the window from sealing correctly against the convertible top. Use the factory adjustment shims for precision fitment.

2. Window Calibration: After installation, you must perform a “Basic Setting” for the window limits using a diagnostic tool or the manual hold-and-pull method. This ensures the “short-drop” function works correctly to protect the rubber roof seals.

3. Color Matching: Audi’s Daytona Grey is a pearl-effect paint. If this door is being fitted to a different car, even with the same paint code, a professional “blend” into the front fender and rear quarter panel is recommended due to variations in factory paint batches and UV exposure.

4. Weight: Despite being aluminum, a complete door with glass, motors, and mirrors weighs approximately 20–25 kg.

Professional Tip

Check the Door Wiring Bellows (the rubber tube between the door and the frame). This is a common point for wire fatigue. Since you have a complete 2014 door, ensure the pins in the connector are free of corrosion and that the harness matches your vehicle’s specific options (e.g., Bang & Olufsen sound system vs. Standard).