Hydro-Gear 72979 Fan & Pulley Kit – 7" Cooling Fan & 4.5" Drive Pulley for ZT-2800, ZT-3100 & ZT-3200 Transmissions

Part Number: 72979
Category: Hydro-Gear Lawn & Garden Equipment Replacement Parts
Type: Replacement Hydrostatic Transmission Cooling Fan & Drive Pulley Kit

The Hydro-Gear 72979 Fan & Pulley Kit is a genuine OEM replacement assembly designed for compatible Hydro-Gear ZT-2800, ZT-3100, and ZT-3200 hydrostatic transmissions used in zero-turn lawn mowers. Featuring a 7-inch cooling fan with ten blades and a 4.5-inch cupped drive pulley, this kit supports proper transmission cooling and belt-driven operation. The fan circulates air around the transmission to help reduce heat buildup, while the pulley transfers power from the mower's drive belt to the transmission input shaft. The Hydro-Gear 72979 provides a dependable replacement for worn, cracked, broken, or damaged fan and pulley components.

Product Specifications

• Part Number: 72979

• Brand: Hydro-Gear

• Product Type: Fan & Pulley Kit

• Component Type: Hydrostatic Transmission Cooling & Drive Assembly

• Part Classification: Genuine OEM Replacement Kit

• Compatible Transmission Series: Select ZT-2800, ZT-3100 & ZT-3200

• Cooling Fan Diameter: 7"

• Cooling Fan Blade Count: 10

• Drive Pulley Diameter: 4.5"

• Pulley Design: Cupped

• Drive Pulley Part Number: 53804

• Retaining Nut Part Number: 44133

• Retaining Nut Thread Size: 1/2"-20

• Washer Part Number: 51523

• Related Pulley Hub Kit: 73048

• Cub Cadet OEM Reference: HG-72979

• Replaces Cub Cadet References: 602094 & 602094P

• Application: Hydrostatic Transmission Cooling & Drive Maintenance

• Quantity: 1 Fan & Pulley Kit

• Condition: New

Features & Benefits

• Genuine Hydro-Gear 72979 replacement fan and pulley kit

• Designed for compatible ZT-2800, ZT-3100, and ZT-3200 transmissions

• Features a 7-inch cooling fan with ten blades

• Includes a 4.5-inch cupped drive pulley

• Helps maintain airflow around the hydrostatic transmission

• Supports proper belt-driven transmission operation

• Provides replacement mounting and retention components

• OEM construction supports proper fit in specified transmission configurations

• Replaces worn, cracked, damaged, or broken fan and pulley assemblies

Applications

• Select Hydro-Gear ZT-2800 hydrostatic transmissions

• Compatible Hydro-Gear ZT-3100 transmissions

• Select Hydro-Gear ZT-3200 transmissions

• Compatible Cub Cadet Ultima ZT3 zero-turn mowers

• Select Cub Cadet Ultima ZTX4 and ZTX5 models

• Compatible Cub Cadet Ultima ZTXS configurations

• Select Cub Cadet PRO X 400 commercial mowers

• Hydrostatic transmission cooling fan replacement

• Transmission input pulley maintenance

• Equipment specifying Hydro-Gear 72979 fan and pulley kits

Important Information

• Verify Hydro-Gear part number 72979 before ordering.

• This listing includes one replacement fan and pulley kit, not a complete hydrostatic transmission.

• Features a 7-inch, 10-blade cooling fan and 4.5-inch cupped pulley.

• Associated components include pulley 53804, retaining nut 44133, and washer 51523.

• Pulley hub kit 73048 is a related service component; confirm its inclusion before ordering.

• Cub Cadet identifies this kit as HG-72979, replacing 602094 and 602094P.

• Not every ZT-2800, ZT-3100, or ZT-3200 transmission uses the same fan and pulley configuration.

• Confirm compatibility using the complete Hydro-Gear transmission model and specification number.

• Do not confuse this kit with Hydro-Gear 72972, 72975, or 72983.

• Inspect the drive belt, input shaft, pulley hub, and mounting hardware before installation.

• Shut off the engine, remove the ignition key, and allow all moving components to stop before servicing.

• Follow the transmission manufacturer's installation and tightening torque specifications.