Spindle Assembly AM105409 for John Deere 48-Inch / 46-Inch / 38-Inch Deck

Overview

This aftermarket AM105409 spindle assembly is a replacement-style mower deck spindle for select John Deere lawn tractor and front mower applications.

This listing is organized around the AM105409 spindle path. Some package variants may include additional deck repair components such as blades, pulleys, or a deck belt, but the lead replacement path is the AM105409 spindle assembly.

Verify your part numbers before ordering.

Key Features

• Aftermarket replacement-style mower deck spindle assembly
• Product Type: Spindle Assembly
• Lead Part Number: AM105409
• Common Deck References: 38 inch, 46 inch, and 48 inch decks in supplier data
• Organized by spindle or mandrel part number first to reduce fitment confusion
• Optional package variants may include spindle, blade, pulley, and belt components

Compatible Brands & Model Series

Supplier listing data associates the AM105409 spindle assembly with select John Deere mower deck applications.

Compatible model references found in supplier data include:

• John Deere 116 / 116H / 185: 38-inch and 46-inch deck references
• John Deere 180: 38-inch, 46-inch, and 48-inch deck references
• John Deere 240 / 245 / 260 / 265 / 280 / 320: 46-inch deck references
• John Deere F510 / F525: 46-inch deck references

Model and deck references come from supplier listing data. Verify your original spindle number, mower model, and deck configuration before ordering.

Replaces OEM Part Numbers

• John Deere: AM105409

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: AM105409
• Blade Numbers: AM31100, M41967, M127466
• Pulley Numbers: AM107468, AM35862, AM37249, AM37442
• Belt Numbers: M84136

Single Spindle Specifications

• Spindle Part Number: AM105409
• Deck Size Reference: 46 inch
• Length: 122 mm / 4.80 inches
• Width: 115.6 mm / 4.55 inches
• Height: 115.6 mm / 4.55 inches

Optional Kit Component Specifications

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

• Spindle Height: 122 mm
• Spindle Diameter: 115.6 mm
• Blade Length: 406 mm
• Blade Height: 51 mm
• Blade Width: 5 mm
• Blade Center Hole Diameter: 17 mm
• Pulley Inner Diameter: 16 mm
• Pulley Outer Diameter: 108.3 mm
• Pulley Belt Width: 20 mm
• Pulley Width: 25.1 mm
• Deck Belt Overall Length: 2565 mm
• Deck Belt Width: 12.7 mm

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
• Uneven cutting caused by worn spindle bearings or spindle housing wear
• Original spindle number matches AM105409

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 package options to reduce duplicate listings and buyer confusion
• 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 John Deere 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 for this listing is AM105409.

Do all variants include blades, pulleys, and a belt?

No. Package contents vary by selected variant. 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 your original spindle number and confirm your mower model, deck setup, pulley layout, and belt path before ordering.