Bendix 816964N is a 1.5 10 spline left hand air brake camshaft, a genuine Bendix part from Pro Gear and Transmission. The slack adjuster turns the camshaft by converting pushrod travel into rotation, and the S-shaped cam end then spreads the brake shoes against the drum. Worn camshaft bushings and other worn foundation brake parts can show up as excessive pushrod stroke, which cuts the braking force available, so camshaft condition is worth checking when stroke runs long. Call us to confirm proper fit for your brakes.A factory handling fee of $20.00 per unit is added at checkout.FeaturesGenuine Bendix partListed as a 1.5 10 spline left hand camshaftAir brake camshaft, part number 816964NTurned by the slack adjuster to push the brake shoes against the drumWorn bushings and foundation parts can show as excessive pushrod strokeTech SpecsSize: 1.5Splines: 10Hand: LeftLength: 12.001Width: 3.95Height: 3.95