Features: Optimize engine performances, enhancing torques by 20% at low spped and improving oil efficiency by 10% through precise valves control for models. Crafted with corrosions resistant aluminum alloy and reinforced engineering plastic, this OEM compatible actuator (part numbers 11377548388, A2C59515105) ensures seamless installation and durability. Ideal for owners, automotive technicians, and performances enthusiasts seeking engine upgrades or replacements . Perfect for daily city commutes, highway cruising, or engine maintenance scenarios, this actuator maintains optimal valves operations under varying loads and speeds to deliver smooth acceleration and consistent power output. This direct fit replacement ensures precise compatibility and long term reliability, reducing engine wear and maintenance costs over extended driving cycles. Specifications: Part number: 11377548388 11377518204 11127552280 A2C59515105 A2C53122965 Component: Metal Applicable models: Suitable for E60 E63 E64 E66 E81 E85 E86 E88 E90 E91 E93 E92 316i 328i 335i 528i Package Includes: 1Piece Eccentric Shaft Actuator note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.