[REPLACES PART NUMBER]: 756 04129b Idler Pulley Replaces Craftsman 753-08171, 756-04129, 756-04129b Idler Pulley 4.25, 753-08068, 753-08068A, 756-04129C, Rotary 12675, Oregon 34-204, 78-065, 280-646 [SPECIFICATION]: Specification of 756-04129 Idler Pulley: Outer Diameter: 4-7/8", Flat Outer Diameter: 4-1/4", Flat-Width: 3/4", Overall Width: 1-1/8", Bore: 3/8", Offset: 1/16"; Hardware for 756-04129 Idler Pulley: Hex Bolt: 3/8-16 x 1-3/4, Flat Washer: 0.407x0.812x0.13, Flanged Nylon Lock Nut: 3/8-16 [DOUBLRE SEALED BEARINGS]: The bearing used in the idler pulley is equipped with a double sealing design, This dual-seal construction effectively retains lubrication within the bearing, thereby extending the service life and ensuring smooth operation. Additionally, the bearing has been pre-greased before sealing, meaning it comes ready for use without the need for additional lubrication during installation or early operation. [FITMENTS]: Fits for Yard Man RZT-42, RZT42, RZT-50, RZT-54, Rzt50, PGT9000, PYT9000, T1000, Troy-Bilt Big Red Gt50, Big Red Gt54, Big Red Horse, Bronco, Colt Xp, GT50, GT54, Horse, Horse XP, Mustang 42 Xp, Mustang 46 Xp, Mustang 50 Xp, Mustang 54 Xp, Mustang Colt Rzt 42, Mustang Rzt 50, Mustang XP, Mustang XP RZT50, Pony, Range, Rzt 42, RZT 50, Super Bronco, TB2142, TB2246, TB2450, TB2654, TB42, TBWC33XP, Thouroghbred, Tuffy, ZT42 Lawn Tractors [FITMENTS]: Fits for MTD 17-Z-Series, C76GF, C79GF, CC760, CC760ES, GT-950H, GT-954, GT-954H, LT1500, LT-1700, LT2000, LT-2000, LT-2200, LT2500, LT3812, LT-4600H, LT-5000, LT538G, LT-542G, LT542H, LT-542H, LT-546G, LT-942G, LT-942H, LT-946G, LT-946H, LT-950H, M79GF, P91GS, P91GT, PGT9000, PYT9000, Q92GP, RZT42, RZT-42, RZT50, RZT-50, RZT54, T1000, T1200, T1400, V76GF, V90GS, V91GS Lawn Tractors [FITMENTS]: Fits for Cub Cadet MM60RSe, RZT-L46, RZT-S50, RZT-S54, GT2554, RZT50, Huskee LT3800, LT4200, Murray M19546, M200-46, M1642, M175-42, M195-42, M155-42, RZT-42, MZ210-42 Tractors, MTD YT4220, YT4220SE, YT4622SE, YT542K, YT542KH, YT942KH, YT946KH, YT950KH, ZT42, ZT-42, ZT-4200, ZT50, ZT-50, ZT-5000, ZT54, ZT-54, ZT-L50, ZTL7000, ZTL8000, ZT-S46, RZT Zero-Turn Tractors 753-08171 Idler Pulley Replaces 753-08068, 753-08068A, 756-04129, 756-04129B, 756-04129C, 75604129B, YS-756-04129