Hydro-Gear 72881 Transaxle Oil Service Kit (OEM) – ZT-4400 thru ZT-5400

The Hydro-Gear 72881 Transaxle Oil Service Kit is a genuine OEM maintenance kit designed to service Hydro-Gear ZT-4400 through ZT-5400 transaxles. This complete kit provides the correct oil, filters, and sealing O-rings needed for proper hydrostatic transmission maintenance—helping extend transaxle life, improve performance, and protect internal components under heavy-use conditions.

Replaces OEM Part Numbers:

• Hydro-Gear: 72881

• Cub Cadet: HG-72881

Kit Includes

• (10) Quarts Genuine Hydro-Gear Commercial Transaxle Oil

• (2) Genuine Hydro-Gear Commercial Oil Filters

• Filter Cover O-Rings (for proper sealing and leak prevention)

Fits Hydro-Gear Transaxle Models

• ZT-4400

• ZT-5400

Why This Kit Matters

Using the correct OEM-approved oil and filters helps keep the hydraulic system clean and properly lubricated, reducing wear and heat buildup while maintaining smooth and consistent drive operation.

Common Applications

Commonly used on commercial and residential zero-turn mowers from brands such as:
Scag, Hustler, Toro, Exmark, Ferris, Cub Cadet, and more.