Genuine 51137497228 BMW X3 Front Upper Radiator Active Grille Shutter Assembly

The Genuine BMW 51137497228 is a front upper active grille shutter assembly — also known as air flaps or a radiator shutter baffle — designed as a direct OEM replacement for the BMW X3. This is an exact factory part manufactured to the same specifications as the original equipment installed at the BMW plant.

Active grille shutters are a critical aerodynamic and thermal management component on modern BMW vehicles. The vehicle's ECM continuously controls the shutter position based on driving conditions for optimal performance and efficiency.

How the Active Grille Shutter Works:

• Cold Start: Shutters remain closed to help the engine reach its optimal operating temperature more quickly, reducing warm-up time and emissions
• Highway Speeds: Shutters close to reduce aerodynamic drag, contributing to improved fuel economy
• Cooling Demand: Shutters open under heavy load or in stop-and-go traffic to maximize airflow to the radiator and prevent overheating

Key Specifications & Details:

• OEM Part Number: 51-13-7-497-228 / 51137497228
• Also Known As: Air Flaps Upper, Shutter, Radiator Grille Shutter, Active Air Flap Assembly (517111)
• Position: Front Upper
• Application Notes: Without PHEV; with Luxury Line; 2.0L applications
• Material: Black plastic

As a genuine OEM BMW component, this shutter assembly ensures precise fit and full compatibility with the vehicle's electronic control systems — critical for a mechatronic part that integrates directly with the BMW ECM. Aftermarket substitutes may cause fault codes or improper system operation. Replacing a failed shutter assembly restores proper engine cooling, eliminates drivetrain malfunction warnings, and returns the vehicle to its designed aerodynamic and thermal performance.