The Meritor E-9644 or E9644 is a Mega Plus repair kit for 16.50-inch Q-type steer axle drum brakes. It covers brake widths of 5.00 in. and 6.00 in., and is built for use with relocated return spring shoes and Q Plus camshafts. The kit also fits Hammer Claw camshaft applications. FMSI numbers 4514Q and 4524Q apply. Stainless steel bushings are included, along with a Posi-Plus roller. One installation requirement: the return spring must be installed with the end hook open toward the camshaft head. This kit crosses to a wide range of numbers including Dayton/Batco 08108850, 08111600, and 08111630, Dana/Spicer 81A and HK81XLS, Haldex CQ66887, Leland K292 and K334, Meritor KIT8081 and R508053, and Sirco MF1 and MF2. Call us to confirm proper fit for your application.Interchanges:8235KIT8081AR9644KIT8081ZDRKIT8081ZZCQ66887Automann 100452410BXAutomann 100452411BXAutomann GMF06BWP MK92Dayton Parts Batco 08111600Dayton Parts Batco 08111605Dayton Parts Batco 08111630Dayton Parts Batco 08111635Gorilla GBH4515QMPower Equipment -PDC 3858PSirco Brake MF2Spicer 81ASpicer HK81XLSStemco BSK1650QFRStemco SK1650QFRUni-Bond HK1657QMUni-Bond HK4524QMVolvo R508053World American Parts WA8081Features16.50 in. steer axle brake application, FMSI 4514Q and 4524QMega Plus kit type with Posi-Plus roller includedStainless steel bushingsCovers 5.00 in. and 6.00 in. brake widthsCompatible with Q Plus and Hammer Claw camshafts; requires relocated return spring shoesCrosses to Dayton/Batco, Dana/Spicer, Haldex, Leland, Sirco, and other major part numbersTech SpecsBrake Diameter: 16.50 in.FMSI: 4514Q, 4524QBushing Type: Stainless SteelKit Type: Mega PlusOE Mfg.: MeritorBrake Width: 5.00 in. & 6.00 in.Application: Steer AxleReplaces: Dayton/Batco 08108850, 08111600, 08111630, Dana/Spicer 81A, Haldex CQ66887, Dana/Spicer HK81XLS, Leland K292, K334, Meritor KIT8081, R508053, Sirco MF1, MF2Parent Description: Meritor Steer Axle BrakeBrake Type: QNotes: Meritor 16.50 in. Steer Axle Brake. For use with relocated return spring shoes and Q Plus camshafts. Can also be used on Hammer Claw camshaft. Important Note: Spring must be installed with end hook open toward camshaft head. Contains Posi-Plus roller.