Hihitomorrow Spindle Assembly 50051388 w/ Pull Sheave 50074053 — Fits Bush Hog FTH/ATH/TD Series, Corrosion-Resistant

Hihitomorrow’s Complete Spindle Assembly 50051388 with Pull Sheave 50074053 is a full replacement kit—pulley, hardware, and mounting bolts included—made to restore cutting performance on compatible Bush Hog finish mowers and rotary cutters.

If your Bush Hog mower or rotary cutter is showing worn spindle components, this ready-to-install kit gives you everything needed to replace the entire spindle and pull sheave in one purchase. Manufactured from treated steel and copper alloys, the assembly resists rust and corrosion and matches the fit and function of the OEM 50051388 part number (replaces obsolete 88757). The kit is designed for several Bush Hog families including FTH, ATH, RDTH, EFM and TD series, and works on many common deck widths and rotary cutter models.

Which Bush Hog models will this spindle assembly fit?

This kit fits a range of Bush Hog finish mower and rotary cutter models where part 50051388 is specified. It supports multiple deck sizes and both finish mower and cutter platforms, making it a versatile replacement option for fleet and homeowner equipment.

• Finish mowers: ATH600, ATH720, EFM480, EFM600, RDTH60, RDTH72
• Zero-turn HDE series with 49", 55", 61" decks
• Rotary cutters: FTH480, FTH600, FTH720; TD-1500, TD-1700 and tri-deck configurations

What parts are included and how does it simplify replacement?

The kit arrives as a complete spindle assembly with the pull sheave 50074053 and all the fasteners you’ll need to reassemble the deck. Because the key components and hardware are packaged together, it removes guesswork about which washers, nuts, and bolts are required and speeds installation.

• Complete spindle housing and shaft ready to mount
• 50074053 pull sheave, pulley shaft key, pulley washer and pulley nut
• Bottom washer set, beveled/indented washers, blade bolt and three mounting bolts

How durable is this replacement compared to the original?

Materials and surface treatments are chosen to mirror OEM durability: copper and steel components plus anti-rust/anti-corrosion treatment extend service life under heavy use. Regular maintenance like lubrication and blade balance will maximize longevity and restore cutting quality.

• Constructed from quality copper and steel alloys
• Anti-rust and anti-corrosion treatment on exposed parts
• Supplied hardware sized to original specifications for correct torqueing

How do I know this is the right replacement for my mower?

Confirm compatibility by matching your machine’s model and the OEM part number—this assembly replaces Bush Hog 50051388 and the obsolete 88757. If your mower uses those numbers or is listed among the supported models, this kit is intended to be a direct swap.

• Replaces OEM part number: 50051388 (replaces obsolete 88757)
• Check your mower manual or spindle housing stamping for part reference
• Contact support if you need help verifying fitment before purchase

Who is this for: This spindle assembly kit is built for farm and landscaping professionals, maintenance shops, and homeowners who maintain Bush Hog finish mowers and rotary cutters. It’s especially useful for anyone wanting a single-purchase solution that includes the pulley, sheave, and all necessary hardware to get a deck back into service quickly and correctly.