One New Aftermarket Replacement Transmission Filter Kit for Hydro-Gear ZT-5400 / ZT-4400 Transaxles - Fits Scag, Gravely, Bad Boy, and Ferris Zero-Turn Mowers

This aftermarket replacement transmission filter kit services the Hydro-Gear ZT-5400 and ZT-4400 series transaxle assemblies used across a wide range of commercial zero-turn mowers from Scag, Gravely, Bad Boy, and Ferris. The kit helps remove contaminants from the hydraulic fluid to protect internal transaxle components and maintain smooth hydrostatic drive performance. Kit includes the transmission filter and an O-Ring for a complete service.

Specifications

• Height: 2-5/8"
• I.D.: 1/2"
• O.D.: 2-5/8"
• Includes: Filter and O-Ring
• Fits: Hydro-Gear ZT-5400 and ZT-4400 transaxle assemblies

Compatible Models

Scag: Most Cheetah series zero-turn mowers with ZT-5400 transaxles

Gravely: 992184, 992185, 992186, 992187, 992197, 992198, 992200, 992201, 992203, 992204, 992205, 992206, 992207, 992224, 992225, 992230, 992231, 992232, 992233, 992234, 992235

Ferris: Most F210Z, F320Z, IS2100Z, IS3200Z (ZT540 transaxle assemblies)

Bad Boy: Zero-turn mowers equipped with ZT4400 transaxle assemblies

Replaces Part Number(s):

Hydro-Gear: 71943 | Scag: HG71943 | Gravely: 21548300 | Ferris: 5101987X2, 5101987X2YP | Bad Boy: 063-1070-00

Aftermarket Interchange Numbers

Husqvarna 576127201; Stens 120-888; Rotary 16018; Hydro-Gear 72537 (related ZT-4400 application - verify fitment)

New aftermarket replacement part - not remanufactured, not used.