Spindle Assembly 618-04608 / 918-0671 for Cub Cadet GT1554 LGT1054

Overview

This aftermarket 618-04608 spindle assembly is a replacement-style mower deck spindle assembly for select Cub Cadet, MTD, Troy-Bilt, White Outdoor, Columbia, and related MTD-built 54-inch mower deck applications.

This listing is organized around the 618-04608 / 918-0671 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 with pulley
• Product Type: Spindle Assembly
• Lead Part Number: 618-04608
• Also Replaces: 618-04608A, 618-0671, 618-0671B, 618-0671D, 918-04608A, 918-0671, 918-0671B, 918-0671D
• Common Deck Reference: 54 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 618-04608 spindle assembly is used on select 54-inch MTD-built garden tractor and lawn tractor mower decks.

Cub Cadet 54-inch model references include:

• GT 1554 garden tractor, including 14AK13BK709, 14AK13BK710, 14AK13BK756, and 14RK13BK756 model paths
• LGT 1054 lawn tractor, including 13AK92AK056, 13W793AK009, 13W793AK056, 13WK92AK009, and 13WK92AK010 model paths
• LGTX 1054 lawn tractor, including 13AZ92AK056, 13YZ92AK010, and 13YZ92AK056 model paths

Additional 54-inch MTD-built references include:

• White Outdoor GT-954, model 14AA815K790
• Columbia Q 816 K, Q 81 GK, V-series, and related 54-inch garden tractor paths
• Troy-Bilt Big Red 54-inch garden tractor, model 14AQ81TK766
• Huskee / MTD Gold 54-inch garden tractor references, including 14AP805K730 and 14AA815K004 model paths

Verify your part numbers before ordering.

Replaces OEM Part Numbers

• MTD / Cub Cadet / Troy-Bilt / White Outdoor / Columbia: 618-04608, 618-04608A, 618-0671, 618-0671B, 618-0671D, 918-04608A, 918-0671, 918-0671B, 918-0671D

Aftermarket Cross-Reference Numbers

• Spindle Cross-Reference: 285-859
• Idler Pulley Cross-Reference: 280-646
• Deck Belt Cross-Reference: 265-264

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: 618-04608, 618-04608A, 618-0671, 618-0671B, 618-0671D, 918-04608A, 918-0671, 918-0671B, 918-0671D
• Aftermarket Spindle Cross-Reference: 285-859
• Blade Numbers: 490-110-M117, 742-0677, 742-0677A, 742-0677B, 942-0677, 942-0677A, 942-0677B, 112-0931, 98024, 335-855
• Idler Pulley Numbers: 753-08068A, 753-08171, 756-04129, 756-04129B, 756-04129C, 956-04129, 956-04129C, 756-05042, 280-646
• Deck Belt Numbers: 954-0642, 754-0642, 112-0933, 265-264

Single Spindle Specifications

• Spindle Part Number: 618-04608
• Also Replaces: 618-04608A, 618-0671, 618-0671B, 618-0671D, 918-04608A, 918-0671, 918-0671B, 918-0671D
• Deck Size Reference: 54 inch
• Spindle Height: 197 mm / 7.76 inches
• Pulley Width: 25 mm / 0.98 inch
• Pulley Outer Diameter: 137 mm / 5.39 inches

Optional Package Component Specifications

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

• Blade Length: 466.7 mm / 18.37 inches
• Blade Width: 79.3 mm / 3.12 inches
• Blade Thickness: 4.2 mm / 0.165 inch
• Idler Pulley Width: 26.4 mm
• Idler Pulley Inner Diameter: 9.6 mm
• Idler Pulley Outer Diameter: 123.8 mm
• Deck Belt Overall Length: 3505.2 mm
• Deck Belt Width: 15.87 mm
• Deck Belt Height: 11.81 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
• Pulley, blade, idler, or belt system is worn, damaged, or no longer tracking correctly
• Original spindle number matches one of the listed 618 / 918 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, 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 618-04608. This listing also references 618-04608A, 618-0671, 618-0671B, 618-0671D, 918-04608A, 918-0671, 918-0671B, and 918-0671D 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 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.