Antanker Spindle Assembly 618-04126 – Replacement for MTD Cub Cadet Troy-Bilt 50-inch Deck Mowers

Overview

The Antanker 618-04126 spindle assembly is designed as a versatile replacement option for a range of OEM part numbers across popular mower lines. It emphasizes easy maintenance, straightforward installation, and compatibility with several deck configurations. The unit is pre-greased and features a dedicated grease fitting, helping you keep the spindle lubricated as part of routine upkeep. It also supports multiple blade center formats to accommodate both 3-point and 6-point star blades, expanding compatibility with existing blade choices.

Key design details help you compare this spindle against your current setup. The design includes a 6-1/3 inch overall height, a 5-3/8 inch pulley diameter, and mounting holes that measure 8 mm. With these dimensions, the spindle aligns with common configurations used on Toro, Cub Cadet, MTD, and Troy-Bilt decks, including several 42-inch and 50-inch models. The included hardware (4 self-tapping screws) makes securing the unit to your mower deck efficient, reducing the need for extra purchases during replacement.

Compatibility snapshot

• Replaces multiple OEM numbers across brands such as MTD, Cub Cadet, Troy-Bilt, and Toro, including several 918-04126/618-04125 variants.
• Fits broader deck options: 42-inch Toro zero-turns, select 50-inch Craftsman riders, Cub Cadet LT 1050 with a 50-inch deck, and 54-inch Troy-Bilt Mustang zero-turn decks (pulley OD 5-3/8 inch).
• Designed to be compatible with both 6-point and 3-point star blade configurations.

What’s built in

• Pre-greased bearings with a zerk fitting for maintenance and longevity.
• Special design that supports 6-point star center holes, enabling use with diverse blade types.
• Mounting holes sized for straightforward installation; includes four self-tapping screws for secure mounting.

Real-world use considerations

For mower owners with a 42-inch Toro ZT or 50-inch deck variants, this spindle can offer a practical replacement option when the original part is worn or unavailable. The combination of a standardized pulley size, blade-center compatibility, and maintenance-friendly fittings makes it a sensible choice for routine deck upkeep. While individual results vary by model and usage, the spindle is positioned as a pragmatic, ready-to-install component for sustaining deck performance without modifying other hardware.

If you’re evaluating a replacement, consider the fitment details (height, pulley diameter, and mounting hole size) and the broad OEM cross-reference to help determine whether this spindle aligns with your mower’s specifications. This can support a smooth replacement process and a potential continuation of routine mowing tasks with minimal downtime.