3-Pack Spindle Assembly 103-8387 / 1-324265 for Exmark Toro 48-Inch Deck

Overview

This aftermarket 103-8387 / 1-324265 spindle assembly 3-pack is a replacement-style mower deck spindle package for select Exmark and Toro commercial walk-behind mower deck applications.

This is one fixed package that includes 3 spindle assemblies with pulleys. Match your original spindle number and pulley number before ordering.

Key Features

• Aftermarket replacement-style 3-pack spindle assembly package
• Product Type: Spindle Assembly
• Lead Spindle Numbers: 103-8387, 1-324265
• Also Replaces: 103-2555
• Related Housing Path: 107-4065, 103-8280, 103-2533, 103-7975
• Related Shaft Path: 1-323529
• Related Pulley Path: 1-403183, 1-303558
• Package Includes: 3 spindle assemblies with pulleys
• Common Deck Reference: 48 inch
• Built around Exmark / Toro Metro, Viking, and commercial walk-behind deck applications
• Organized by complete spindle assembly number first to reduce fitment confusion

Compatible Brands & Model Series

This 103-8387 / 1-324265 spindle assembly 3-pack is associated with select Exmark and Toro commercial mower deck applications using the listed complete spindle assembly path.

Common model-series references include:

• Exmark Metro walk-behind mower deck applications
• Exmark Viking walk-behind mower deck applications
• Exmark Viking Hydro mower deck applications
• Toro commercial walk-behind mower deck applications using the listed spindle and housing paths
• 48-inch deck applications where the original spindle assembly number matches 103-8387, 1-324265, or 103-2555

Verify your part numbers before ordering.

Replaces OEM Part Numbers

• Complete Spindle Assembly Numbers: 103-8387, 1-324265, 103-2555
• Related Housing Numbers: 1-634619, 1-323532, 107-4065, 103-8353, 103-8280, 103-7975, 103-2548, 103-2547, 103-2533
• Related Shaft Number: 1-323529
• Related Pulley Numbers: 1-403183, 1-303558, 1-303535

Part Number Breakdown

Part numbers below are grouped by component type. This listing is built around the complete 103-8387 / 1-324265 spindle assembly path, with related housing, shaft, and pulley references included for fitment review.

• Complete Spindle Assembly Numbers: 103-8387, 1038387, 1-324265, 1324265, 103-2555, 1032555
• Housing Numbers: 1-634619, 1634619, 1-323532, 1323532, 107-4065, 1074065, 103-8353, 1038353, 103-8280, 1038280, 103-7975, 1037975, 103-2548, 1032548, 103-2547, 1032547, 103-2533, 1032533
• Shaft Numbers: 1-323529, 1323529, E323529
• Pulley Numbers: 1-403183, 1403183, E403183, 1-303558, 1303558, E303558, 1-303535, 1303535

Spindle Assembly Specifications

• Complete Spindle Assembly Numbers: 103-8387, 1-324265, 103-2555
• Spindle Height Reference: approximately 3.83 inches on common aftermarket complete spindle data
• Mounting Holes: 6
• Shaft Shape: round / circle path
• Material Reference: steel path on common aftermarket data
• Grease Fitting: no on common complete spindle assembly data
• Pulley Included: yes, when shown in this complete spindle assembly package
• Application Note: Confirm complete spindle assembly number, housing style, shaft setup, pulley fit, mounting hole layout, blade hardware, and belt routing before ordering

Housing Specifications

• Related Housing Numbers: 107-4065, 103-8280, 103-7975, 103-2548, 103-2547, 103-2533, 1-634619, 1-323532
• Housing Height Reference: 3-3/4 inches on common housing-only data
• Housing Inner Diameter Reference: 1 inch on common housing-only data
• Housing Note: These numbers are useful for cross-reference review, but this page should remain led by the complete spindle assembly numbers.

Pulley Specifications

• Related Pulley Numbers: 1-403183, 1-303558, 1-303535
• Pulley Note: Match pulley part number, bore, outer diameter, belt groove, and belt path before ordering.
• Finish Note: Pulley finish or color may vary by supplier batch. Match the part number, dimensions, and belt path instead of ordering by color.

What’s Included

• 3 aftermarket replacement-style spindle assemblies replacing 103-8387 / 1-324265 / 103-2555
• Pulleys included when shown in the product image for the complete spindle assembly package
• Use the product image to confirm exact contents before checkout

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
• Spindle pulley is worn, damaged, bent, or no longer tracking the belt correctly
• Housing, shaft, or bearing area is worn or damaged
• Original complete spindle assembly number matches 103-8387, 1-324265, or 103-2555

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 complete spindle assembly path
• Clear separation between spindle assembly, housing, shaft, and pulley references
• Separate buyer path from the housing-only 107-4065 / 103-8280 listing
• 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 the same as the 107-4065 / 103-8280 spindle housing listing?

No. The 107-4065 / 103-8280 listing is the housing path. This listing is built around the complete 103-8387 / 1-324265 spindle assembly path.

What are the lead part numbers for this listing?

The lead complete spindle assembly numbers are 103-8387, 1-324265, and 103-2555.

Are 107-4065 and 103-8280 complete spindle assembly numbers?

No. Those are related housing numbers. They are important cross-references, but they should not replace 103-8387 as the lead complete spindle assembly number.

What is included with this listing?

This listing includes 3 aftermarket replacement-style spindle assemblies. Pulleys are included when shown in the product image for the complete spindle assembly package.

Should we keep this page if we already have the 107-4065 housing listing?

Yes. This page targets buyers searching for the complete 103-8387 / 1-324265 spindle assembly, while the previous page targets buyers searching for the housing-only 107-4065 / 103-8280 path.

Can I order by deck size only?

No. Deck size alone is not enough. Match the original complete spindle assembly number first, then confirm housing path, shaft setup, pulley number, mounting pattern, blade hardware, and belt routing before ordering.