BMW ALPiNA B4 D4 GT G26 LCI Bumper Grille Grill flaps Complete

complete ALPINA B4/D4 GT (G26 LCI) front bumper assembly can be tricky since these parts are often exclusive to ALPINA-authorized dealers or specialized retailers. The G26 LCI (Life Cycle Impulse/Facelift) specifically features a updated front end with integrated aerodynamic elements.

A “Complete” assembly for the B4/D4 GT typically includes the main bumper cover, the ALPINA-specific front spoiler lip, and the complex air flap system.

Key Components of the Assembly

• Bumper Cover: The base structure, often shared with the BMW M440i/M-Sport but modified for ALPINA cooling. BMW ALPiNA B4 D4 GT G26 LCI Bumper Grille Grill flaps Complete

• ALPINA Front Spoiler: The iconic lower lip featuring the ALPINA wordmark. For the GT models, this often includes small black-painted canards.

• Bumper Grilles: The central and side grilles. On the B4 GT, the kidney grille features distinct silver bars.

• Air Flap Control: The active “flaps” that open or close for aerodynamic efficiency and cooling.

Part & Kit Options

While full kits are rare to find as a single “one-click” purchase, you can source the critical individual components:

• Front Bumper Spoiler Lip: The most distinctive part of the B4 appearance.

  • Part Number: 94110395 (Reference for OEM Primed version).

• Exterior Air Flap Vent Grille: The mechanical flap system located behind the grilles.

  • Part Number: 51745A1E918 (Standard G26 fitment).

• Lower Bumper Trim: ALPINA-specific lower mesh and inserts.

  • Part Number: 51-11-7-997-293 (Used for ALPINA-style retrofits).

Shopping Tips for G26 LCI Parts

1. VIN Verification: Because the LCI (2025/2026 models) changed the mounting points for grilles and sensors, always provide your VIN to the seller to ensure the air flap motor and sensor brackets align correctly.

2. Shadowline vs. Standard: The GT models often come with Shadowline (Black) accents. Ensure your grille choice matches your window trim and mirror caps.

3. Complete Kits: Some European retailers like Auto-Doc or Schmiedmann offer “Bumper Kits” (e.g., Diederichs 1224251) which include the grilles and mounting hardware, but the specific ALPINA lip is usually sold separately.