Spindle Assembly 618-05016 / 918-04825B for Cub Cadet LTX1050 50-Inch Deck

Overview

This aftermarket 618-05016 spindle assembly is a replacement-style mower deck spindle assembly for select Cub Cadet LTX1050 50-inch lawn tractor mower deck applications.

This listing is organized around the 618-05016 / 918-05016 spindle path. Some package options may include additional deck repair components such as blades, idler pulleys, and a deck belt, but the lead replacement path is the spindle assembly.

Key Features

• Aftermarket replacement-style mower deck spindle assembly
• Product Type: Spindle Assembly
• Lead Part Number: 618-05016
• Also Replaces: 918-05016, 618-04825, 618-04825A, 618-04825B, 918-04825, 918-04825A, 918-04825B
• Common Deck Reference: 50 inch
• Optional package variants may include spindle assemblies, blades, idler pulleys, and deck belt components
• Organized by spindle or mandrel part number first to reduce fitment confusion

Compatible Brands & Model Series

This 618-05016 spindle assembly is associated with select Cub Cadet LTX1050 50-inch mower deck applications.

Cub Cadet model references include:

• LTX 1050 KH, 50-inch lawn tractor, model 13AQ93AP010, 2014
• LTX 1050 KH, 50-inch lawn tractor, model 13WQ93AP009, 2014
• LTX 1050 KH, 50-inch lawn tractor, model 13WQ93AP010, 2014
• LTX 1050 KH, 50-inch lawn tractor, model 13WQ93AP056, 2014
• LTX 1050 KH, 50-inch lawn tractor, model 13WQ93AP210, 2014
• LTX 1050 KW, 50-inch lawn tractor, model 13AI93AP010, 2014

Verify your part numbers before ordering.

Replaces OEM Part Numbers

• Cub Cadet / MTD: 618-05016, 918-05016, 618-04825, 618-04825A, 618-04825B, 918-04825, 918-04825A, 918-04825B

Optional Package Part Number Breakdown

Part numbers below may apply to available package options. Not every package includes every component listed. Select the option that matches the parts needed for your repair.

• Spindle / Mandrel Numbers: 618-05016, 918-05016, 618-04825, 618-04825A, 618-04825B, 918-04825, 918-04825A, 918-04825B
• Blade Numbers: 742-04053, 742-04053A, 742-04053B, 742-04053C, 742-04056, 742-04056A, 742-04056A-0637, 742-04056B, 742-04056B-0637, 742-04056C, 742-04056C-0637, 942-04053, 942-04053A, 942-04053B, 942-04053C, 942-04053H, 942-04056, 942-04056A, 942-04056C, 490-110-C123, 490-110-M126
• Idler Pulley Numbers: 756-05034, 756-05034A
• Deck Belt Numbers: 754-04077, 754-04077A, 954-04077, 954-04077A, 265-196

Alternate Part Number References

• Undashed spindle references: 61804825, 61804825A, 61804825B, 61805016, 91804825, 91804825A, 91804825B, 91805016
• Undashed blade references: 74204053, 74204053A, 74204053B, 74204053C, 74204056, 74204056A, 74204056A0637, 74204056B, 74204056B0637, 74204056C, 74204056C0637, 94204053, 94204053A, 94204053B, 94204053C, 94204053H, 94204056, 94204056A, 94204056C, 490110C123, 490110M126
• Undashed idler pulley references: 75605034, 75605034A
• Undashed belt references: 75404077, 75404077A, 95404077, 95404077A, 265196

Single Spindle Specifications

• Spindle Part Number: 618-05016
• Also Replaces: 918-05016, 618-04825, 618-04825A, 618-04825B, 918-04825, 918-04825A, 918-04825B
• Deck Size Reference: 50 inch
• Height: 171 mm / 6.7 inches
• Mounting Hole Distance: 90.5 mm / 3.58 inches
• Outer Diameter: 140 mm / 5.5 inches
• Material: Aluminum
• Weight Reference: 3 lb 12 oz

Optional Package Component Specifications

The following specifications apply to optional package variants that include blades, idler pulleys, or a deck belt.

• Deck Blade Length: 450.85 mm / 17-3/4 inches
• Deck Blade Width: 63.5 mm / 2.5 inches
• Deck Blade Thickness: 4.30 mm / 0.169 inch
• Deck Blade Inner Diameter: 25.4 mm / 1 inch
• Deck Blade Center Hole: 6-point star
• Idler Pulley Width: 43 mm / 1.69 inches
• Idler Pulley Inner Diameter: 17 mm / 0.67 inch
• Idler Pulley Outer Diameter: 133 mm / 5.23 inches
• Deck Belt Width: 15.87 mm / 0.62 inch
• Deck Belt Overall Length: 3403.6 mm / 134 inches

Common Symptoms / When to Replace

• Mower deck spindle is noisy, loose, seized, or wobbling
• Blade has excessive play at the spindle shaft
• Deck vibration increases during blade engagement
• Blade, idler pulley, or belt system is worn, damaged, or no longer tracking correctly
• Original spindle number matches 618-05016, 918-05016, or one of the listed 618/918-04825 spindle numbers

Quick Ship Fulfillment

This item may ship directly from one of our trusted U.S. distribution partners to help reduce transit time. Packaging, labeling, or warehouse origin may vary, but the part will match the replacement numbers, fitment notes, and specifications shown in this listing.

Why Buy From PTO Direct USA

• Fitment-first product organization by replacement part-number path
• Clear spindle, blade, idler pulley, and belt references for package variants
• U.S.-focused fulfillment options for faster delivery when available

Need a Custom Package?

Need a different combination of parts? Email us the part type and part numbers you need, such as spindle assemblies, blades, belts, pulleys, reinforcement rings, bearings, or hardware. We can review the part-number path and quote a custom package when available.

FAQ

Is this an OEM spindle assembly?

No. This is an aftermarket replacement-style spindle assembly intended to replace the listed part-number path when the physical fitment details match.

What is the lead part number for this listing?

The lead spindle part number is 618-05016. This listing also references 918-05016, 618-04825, 618-04825A, 618-04825B, 918-04825, 918-04825A, and 918-04825B in the same spindle path.

Do all package options include blades, idler pulleys, and a belt?

No. Package contents vary by selected option. Use the variant title and product images to confirm whether you are ordering a single spindle assembly or a larger deck repair package.

Can I order by deck size only?

No. Deck size alone is not enough. Match the original spindle or mandrel number and confirm your mower model, deck setup, pulley layout, mounting pattern, blade path, and belt path before ordering.