Spindle Assembly 918-04426 / 918-3129B for Cub Cadet 54-Inch Deck

Overview

This aftermarket 918-04426 spindle assembly is a replacement-style mower deck spindle assembly for select Cub Cadet 54-inch lawn tractor, garden tractor, and stamped mower deck applications.

This listing is organized around the 918-04426 spindle path. Some package options may include additional deck repair components such as pulleys and blades, 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: 918-04426
• Common Deck Reference: 54 inch
• Optional package variants may include spindle assemblies, pulleys, and blades
• Organized by spindle or mandrel part number first to reduce fitment confusion

Compatible Brands & Model Series

Supplier listing data associates the 918-04426 spindle assembly with select Cub Cadet 54-inch mower deck applications.

Cub Cadet model references found in supplier data include:

• SLT 1554 54-inch lawn tractor, model references 13AK11CK709, 13AK11CK710, and 13AK11CK712
• GT 2554 54-inch garden tractor, model references 13A-2A7K710, 14A-2A7K010, and 14A-2A7K710, including 2004 and earlier plus 2005-2008 supplier references
• GT 2523-54, model reference 13A-2A8K710
• 295 / 190-295-100 54-inch mower deck attachment references
• 19A40014 / 19A40014100 stamped 54-inch mower deck references, including 2011-2013 and 2015 supplier references

Verify your part numbers before ordering.

Replaces OEM Part Numbers

• Cub Cadet: 918-04426, 918-3129B, 918-3129C, 618-3129B, 618-3129, 618-04217

Optional Package Part Number Breakdown

Supplier listing data references the following part numbers across available package options. Not every package includes every component listed below. Select the variant package that matches the parts needed for your repair.

• Spindle / Mandrel Numbers: 918-04426, 918-3129B, 918-3129C, 618-3129B, 618-3129, 618-04217
• Pulley Numbers: 756-3096
• Blade Numbers: 759-3820, 742P3013A

Single Spindle Specifications

• Spindle Part Number: 918-04426
• Also Replaces: 918-3129B, 918-3129C, 618-3129B, 618-3129, 618-04217
• Deck Size Reference: 54 inch
• Spindle Width: 79.4 mm / 3.12 inches
• Spindle Length: 144 mm / 5.66 inches
• Inner Diameter: 18.6 mm / 0.73 inch

Optional Package Component Specifications

The following specifications were found in supplier data for optional package variants that include additional deck repair components.

• Pulley Part Number: 756-3096
• Pulley Width: 20.5 mm / 0.80 inch
• Pulley Inner Diameter: 19 mm / 0.74 inch
• Pulley Outer Diameter: 128 mm / 5.03 inches
• Blade Part Numbers: 759-3820, 742P3013A
• Blade Length: 469.9 mm / 18.5 inches
• Blade Width: 76.3 mm / 3.0 inches
• Blade Thickness: 4.1 mm / 0.16 inch
• Blade Hole Diameter: 19.3 mm / 0.75 inch

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
• Pulley or blade system is worn, damaged, or no longer tracking correctly
• Original spindle number matches 918-04426 or one of the listed replacement 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, pulley, and blade references for package variants
• U.S.-focused fulfillment options for faster delivery when available

Need Help Confirming Fitment?

Send us your mower model number, deck size, and the part number stamped on your original spindle or mandrel assembly. We can help confirm whether this is the correct replacement path.

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 918-04426. Supplier data also references 918-3129B, 918-3129C, 618-3129B, 618-3129, and 618-04217.

Do all package options include pulleys and blades?

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, and blade path before ordering.