8TEN Spindle for Cub Cadet 50-Inch Deck — Fits 618-05016/918-05016, Includes Blade Hardware, 5-7/16" Pulley

8TEN replacement spindle designed to fit Cub Cadet 50-inch decks, compatible with OEM part numbers 618-05016 and 918-05016 for reliable blade mounting and belt alignment.

When a worn spindle causes vibration, poor cut quality, or squealing from your 50-inch mower deck, replacing it with a correctly matched spindle restores performance and extends deck life. This 8TEN spindle is engineered to match key dimensions and fitments of popular Cub Cadet and MTD models from the 2011–2014 era, including several LTX and YT series tractors. It ships complete with blade mounting hardware to make installation straightforward for mechanically inclined owners and service technicians.

Will this spindle fit my Cub Cadet or MTD mower?

Yes — this spindle is manufactured to be compatible with multiple OEM part numbers used by Cub Cadet and MTD. Verify your current spindle part number or tractor model and year to confirm fit before ordering.

• Replaces Cub Cadet 618-05016 and 918-05016.
• Also cross-references MTD numbers 618-04825, 618-04825A/B, 918-04825 series.
• Compatible with MTD Columbia YT950H and Cub Cadet models like LTX1050 and YT950KH (2011–2014).

What are the physical specifications and included parts?

The spindle matches the essential dimensions required for safe blade clearance and belt routing on 50-inch decks. It includes the blade mounting fasteners so you won't need to source extra hardware for reassembly.

• Overall spindle height: 4 5/8 inches.
• Pulley outer diameter: 5 7/16 inches to align with deck belts.
• Ships with blade mounting hardware for direct replacement.

How difficult is installation and what should I prepare?

Installation is moderate: you should be comfortable lifting the deck, supporting the tractor safely, and using basic hand tools. Removing the old spindle and installing the new unit typically takes under an hour per spindle for someone with standard mechanical experience.

• Required tools: socket set, torque wrench, breaker bar, and safety stands.
• Recommend replacing blades and checking belt condition while the deck is accessible.
• Torque blade hardware to factory specs and verify pulley alignment after installation.

How will replacing the spindle affect mower performance?

A correctly matched spindle reduces vibration, improves blade tracking, and helps maintain an even cutting height across the deck. It also prevents premature wear of belts and other deck components by restoring proper pulley geometry.

• Reduces wobble and vibration felt through the deck and chassis.
• Restores correct belt tension and pulley alignment to extend belt life.
• Improves cut quality by stabilizing blade rotation and deck balance.

Who this product is for: The 8TEN 50-inch spindle is intended for owners and operators of compatible Cub Cadet and MTD lawn tractors—especially those with LTX1050, SLTX1050, YT950KH and similar models from 2011–2014—who need a dependable, OEM-cross-reference replacement. It's also a practical choice for small repair shops and lawn care professionals seeking a cost-effective spindle that includes mounting hardware and matches original dimensions for an accurate repair.