50 Inch Deck Spindle Assembly Fit for Cub Cadet XT1 XT2 LT50 LX50 XT2 LX50 XT1 LT50 MTD CYT5023SE Lawn Mower Replaces 618-06981 918-06981 (3 Pack)

What It Is

This is a 3-pack of spindle assemblies for 50-inch cutting decks used on Cub Cadet XT1, XT2, LX50, LT50, and MTD CYT5023SE series lawn tractors. The spindle houses the bearing that rotates the blade at high speed; a worn or damaged spindle causes excessive vibration, uneven cuts, and blade wobble. This set is designed as a direct replacement for OEM part numbers 618-06981 and 918-06981.

Fitment & Compatibility

Before buying, confirm these three things:

1. Deck width: Must be exactly 50 inches. Measure blade tip to blade tip or check your mower’s deck model number (e.g., 50C, 50D).
2. OEM part cross-reference: Verify your current spindle’s part number matches 618-06981 or 918-06981. This is stamped on the spindle housing or listed in your owner’s manual.
3. Physical dimensions: This assembly uses a 5/8-inch hex shaft and a 3-bolt mounting pattern (bolt center-to-center approx. 3.25 inches). Measure your old spindle’s shaft diameter, bolt spacing, and overall height (roughly 5.5 inches) to ensure a match.

Known compatible models (not exhaustive): Cub Cadet XT1 LT50, XT1 LT46 (with 50" deck), XT2 LX50, XT2 LT50, MTD CYT5023SE, and similar 2015–2023 models with 50-inch fabricated or stamped decks.

Key Things to Know

• Quality: Made from cast iron housing with sealed ball bearings. Most users report it’s comparable to OEM Cub Cadet spindles at a lower price. Check for metal debris or rough rotation out of the box.
• Installation difficulty: Moderate. Requires removing the deck, old spindle, and blade. You’ll need a socket set, torque wrench (blade bolt torque ~70–90 ft-lbs), and possibly a puller for stubborn spindles. Plan 1–2 hours for all three.
• Common gotchas: The included bolts may be SAE or metric; verify thread pitch (usually 5/16-18 or 3/8-16) before installing. Grease zerk fittings are not present on most aftermarket spindles; if your OEM had one, you’ll lose the ability to re-grease.
• Warranty: Typically 1–2 years from the seller. Inspect for cracks or misaligned bearings immediately upon arrival.

Should You Buy It

If you own a Cub Cadet or MTD with a 50-inch deck and need to replace one or more spindles due to vibration or blade wobble, this 3-pack offers good value at roughly $21 per spindle. It’s a solid choice for DIY homeowners who want OEM-level fit without paying dealer prices. Not ideal for commercial use or if you require greasable spindles.