The 40010057 Midland Haldex ABA Kit is an automatic brake adjuster service kit for non-standard steer axle applications. It has a 5-1/2″ arm, a 1-1/2″ left-hand offset, a 22.5 body angle and a 1-1/2″-10 spline, paired with a clamp-style anchor bracket. An automatic slack adjuster keeps the brake shoes at the right distance from the drum on its own and takes up slack as the linings wear, so routine manual adjustments and the downtime that goes with them drop away. Kit 40010055 is the opposite side. A genuine Midland Haldex part from Pro Gear and Transmission. Call us to confirm fit for your axle.A factory handling fee of $25.00 per unit is added at checkout.FeaturesService kit for non-standard steer axle applicationsArm length 5-1/2″ with a 1/2″ arm holeBody angle 22.5, offset 1-1/2″ LHSpline: 1-1/2″ diameter, 10 splineClamp-style anchor bracket, bracket number 42710497Kit 40010055 is for the opposite sideTech SpecsSpline Diameter-Spline Count: 1-1/2″-10Arm Length: 5-1/2″Body Angle: 22.5Offset: 1-1/2″ LHArm Hole Diameter: 1/2″Anchor Bracket Style: ClampBracket Number: 42710497OEM Part Number: 409-10602Grease Fitting Location: 242Grease Fitting Type: 65Additional InformationNote: 40010055 for opposite side.