Information?? High quality chassis partseries products. Made with high strength steel tubing for superior strength and durability. Stable performance, reliable quality and long service life Uniform thickness, no blow holes, slag, cracks, tearing, or incomplete fusion. Measured by specialized inspection tools after welding to make sure assemble hole , bushings insert, and installation sizes are proper. Professional InstallerisHighly Recommended(No Instruction Included) Alignment Highly Recommended After Install The Motors Compatible:Repacement of components 1101428. The Motors Work Parameter:Voltage:12V DC Rated:13NM This gear box has a curved linkage assembly “A” is embossed on the linkage arm Replace part number:366043 1101428 676061 379147Compatibility Chart?? For Step Series 22, 23, 28A, 30, 32, 33, 34, 35, 36, 38 and 40 Series Steps With Integrated Motor Gear Linkage (IMGL) Manufactured After 2006Package Content?? 1x RV Gear Box Linkage 1x Motor