Genuine BMW 11-37-7-630-747 Valvetronic Eccentric Shaft

The Genuine BMW 11-37-7-630-747 Eccentric Shaft is a critical component of the Valvetronic variable valve lift system used in 2012-2018 BMW vehicles equipped with N20 and N55 turbocharged engines. This eccentric shaft serves as the core component that controls the intermediate lever movement, adjusting the lift of the intake valves without using a traditional throttle body.

Key Features:

• Genuine BMW OEM replacement part ensuring perfect fit and quality
• Eccentric design that permits variable valve lift operation
• Actuated by the electric Valvetronic motor to adjust intake valve lift
• Direct replacement for OEM part numbers 11377630747 and 11377593894
• Precision-engineered to meet BMW's strict manufacturing standards

Function and Benefits:

• Regulates lift and duration of intake valves for better airflow management, reduced pumping losses, and lower fuel consumption
• Increases efficiency by minimizing pumping losses and improves fuel economy and emissions
• Enables infinitely adjustable intake valve timing when combined with variable valve timing
• Helps maintain smooth engine operation and optimal idle quality

Important Installation Notes:

• Requires removal of the valve cover and special BMW tooling to release tension from shaft springs and levers
• After installation, limit stops must be relearned using a BMW scan tool, as the DME records these stops via the eccentric shaft sensor
• Professional installation strongly recommended to prevent potential engine damage

This genuine BMW eccentric shaft replaces worn or damaged components that can cause check engine lights, rough idle, poor performance, or Valvetronic system fault codes. When your BMW's Valvetronic system fails, trust only genuine BMW parts for reliable, long-lasting repairs.