The Volvo/Mack Charged Air Econodyne - No Pulley is a practical and reliable product designed for Mack E6, EM6, and EMS-6 engines. With a .94?? long shaft and OEM pump number 316GC1210A, this charged air econodyne ensures optimal performance and efficiency. Its features include a no pulley design and OEM casting number 360GB443. Sold individually, this product is a perfect fit for most Mack engines. Trust in the Volvo/Mack Charged Air Econodyne - No Pulley for enhanced engine functionality and long-lasting durability.