Reman Horton DM Advantage 2 speed fan drive and clutch assy, 6.61 diameter 8PK serpentine pulley, 9.57 overall length, 2.05 belt groove location, 3.5 bolt circle, 2.56 dia fan pilot, 1.07 long 3/8-24 fan studs, 2.21 high vertical mounting distance from top to bottom mounting holes, 3.54 wide horizontal mounting distance from bottom left to right mounting holes, 4 bolt mounting, 13.78 fan center; Horton rebuild use 995543 and 995566 kits for complete rebuild or Kit Masters rebuild kit 24-256; on/off variation options - new Horton 99A9502 or reman Kit Masters 99502-2