Spindle Assembly 61543800 / 51510000 for Ariens Gravely Zoom ZT

Overview

This aftermarket 61543800 / 51510000 spindle assembly is a replacement-style mower deck spindle assembly for select Ariens and Gravely Zoom, Mini Zoom, ZT, and related mower deck applications.

This listing is organized around the 61543800 / 51510000 spindle path. Some package options may include additional deck repair components such as a spindle pulley, but the lead replacement path is the spindle assembly.

Key Features

• Aftermarket replacement-style mower deck spindle assembly
• Product Type: Spindle Assembly
• Lead Part Numbers: 61543800, 51510000
• Also Replaces: 61527600
• Common Application Path: Ariens Zoom / Mini Zoom and Gravely ZT mower deck spindle family
• Optional package variants may include spindle pulleys
• Organized by spindle or mandrel part number first to reduce fitment confusion

Compatible Brands & Model Series

This 61543800 / 51510000 spindle assembly is used on select Ariens and Gravely mower deck applications.

Ariens model-series references include:

• Ariens Zoom mower deck references
• Ariens Mini Zoom mower deck references

Gravely model-series references include:

• Gravely ZT mower deck references
• Gravely ZT XL mower deck references

Verify your part numbers before ordering.

Replaces OEM Part Numbers

• Ariens / Gravely: 61543800, 51510000, 61527600

Aftermarket Cross-Reference Numbers

• Stens: 285-354
• Oregon: 82-040

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: 61543800, 51510000, 61527600
• Spindle Pulley Numbers: 07330267, 01610300

Single Spindle Specifications

• Spindle Part Number: 61543800
• Also Replaces: 51510000, 61527600
• Spindle Height Reference: 107 mm / 4-1/4 inches
• Mounting Hole Distance Reference: 88 mm / 3.46 inches

Optional Package Component Specifications

The following specifications apply to optional package variants that include a spindle pulley.

• Spindle Pulley Numbers: 07330267, 01610300
• Pulley Inner Diameter: 25.4 mm / 1 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 is worn, damaged, or no longer tracking the belt correctly
• Original spindle number matches 61543800, 51510000, or 61527600

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 and pulley 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 Ariens / Gravely part-number path when the physical fitment details match.

What are the lead part numbers for this listing?

The lead spindle numbers are 61543800 and 51510000. This listing also references 61527600 in the same spindle path.

Are 07330267 and 01610300 spindle numbers?

No. Those are spindle pulley numbers and should not be treated as spindle assembly replacement numbers.

Do all package options include the pulley?

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 spindle and pulley 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.