$30.47
$19.99
Product Code: 80-12-020

This spindle assembly fits select Cub Cadet and MTD 50" mower decks, including models from Troy-Bilt, Yard Machines, Yard-Man, and White Outdoor. Built for long-lasting performance, it features a 4-bolt housing, pre-installed pulley, and a 6-point star blade shaft designed for nut-secured blade installation.

Replaces OEM Part Numbers:

Cub Cadet & MTD:

  • 618-04129A

  • 618-04129B

  • 918-04129A

  • 918-04129B

Aftermarket Equivalents:

  • Rotary: 11963

  • Stens: 285-842

  • Sierra: 70-03187

  • Oregon: 82-412

Compatible Models

Cub Cadet:
GT1050, GT1554, LGT1050, LGTX1050, RZT50, RZT54
LT1050 (2007 and earlier), SLT1554 (pre-2007)

MTD:
Yard Machines and Yard-Man models with 50" and 54" decks

White Outdoor:
GT and ZT series with 50" and 54" decks

Troy-Bilt:
Super Bronco 50, Mustang 50, Mustang 54

Key Features:

  • Fits most MTD-manufactured 50" mower decks

  • 6-point star shaft accepts nut-secured blades

  • 4-bolt mounting pattern for easy installation

  • Pulley pre-installed

  • Grease fitting included for maintenance

  • Ideal for zero-turn and lawn tractor applications

Why Choose This Replacement?

  • Built to OEM specs for durability and performance

  • Compatible with a wide range of 50" and 54" decks

  • Easy to install – perfect for DIY repairs and shop rebuilds

  • Trusted across Cub Cadet, MTD, Troy-Bilt, and more

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