Original quality eccentric shaft 1137 7630 747 for BMW N20

Original quality eccentric shaft with OE number 11377630747 is the upgraded version component of BMW Valvetronic variable valve lift system, specially applied to BMW N20 series naturally aspirated engines. Processed strictly in accordance with OEM precision manufacturing standards, this eccentric shaft is made of high-strength alloy steel with overall quenching and tempering heat treatment, featuring high surface hardness, excellent wear resistance and stable anti-fatigue performance. Cooperated with Valvetronic servo motor, it can continuously adjust the intake valve lift to optimize air intake efficiency under different working conditions, effectively boost engine power, reduce fuel consumption and exhaust emissions, and ensure smooth idling operation.

Once the original eccentric shaft suffers from journal wear, gear tooth abrasion or deformation, the vehicle will trigger Valvetronic system fault codes, accompanied by unstable idle speed, insufficient power, difficult cold start and increased fuel consumption. Each eccentric shaft has passed precision dimensional inspection, hardness test and fatigue durability test to guarantee long-term stable and accurate valve lift adjustment. With original standard spline specification and positioning structure, it supports direct replacement installation without secondary modification, greatly saving maintenance time and labor costs. We have abundant spot inventory, support bulk wholesale, mixed orders and global fast delivery. Highly recognized by professional BMW repair shops and auto parts distributors, it is an ideal replacement part for N20 engine Valvetronic system overhaul.