E7622 is a genuine Meritor axle seat, catalogued as a spring seat for a 5 round axle with a 1 1/4 seat height and listed for 7700/9700 applications. The seat gives the suspension a stable, supportive place to bear on the axle, so the load is carried evenly and the axle stays located. It is used on heavy-duty truck suspensions built around a round axle. Check the round axle size and seat height against your existing seat before ordering, and call Pro Gear and Transmission if you would like help confirming proper fit.FeaturesGenuine Meritor E-7622 or E7622 spring seatSized for a 5 round axleSeat height 1 1/4Listed for 7700/9700 applicationsGives the suspension a stable seat on the axleA genuine Meritor part from Pro Gear and Transmission