918-0671 618-04608 Spindle Assembly Fits 54 inch Deck for Cub Cadet LGT1054 GT1554 RZT-54, for MTD Gold, for Troy-Bilt TB2654, Replaces 618-04608A 918-04608A Spindle 618-0671 618-0671B 918-0671B

What It Is

This is a complete spindle assembly for 54-inch cutting decks on select Cub Cadet, MTD Gold, and Troy-Bilt lawn tractors. It houses the pulley and bearings that spin the mower blade, and it’s a direct replacement for a worn or failed OEM spindle.

Fitment & Compatibility

Before buying, confirm your deck is exactly 54 inches—this part will not work on 42, 46, or 50-inch decks. It fits Cub Cadet models LGT1054, GT1554, and RZT-54, plus Troy-Bilt TB2654 and MTD Gold tractors with a 54-inch fabricated deck. This assembly replaces OEM numbers 618-04608A, 918-04608A, 618-0671, 618-0671B, and 918-0671B. Measure the bolt pattern center-to-center (typically 3.5 inches) and the spindle shaft diameter (usually 0.75 inch) to match your existing unit. If your deck uses a different pulley offset or shaft length, this will not fit.

Key Things to Know

• Build quality: Aftermarket spindle; some users report slightly thinner metal than OEM, but it holds up well for residential use.
• Installation difficulty: Moderate—requires removing the deck, belt, pulley, and blade. Have a socket set, torque wrench, and penetrating oil on hand for rusted bolts.
• Common gotcha: The spindle may not come pre-greased. Apply a high-temperature bearing grease before installation to extend life.
• Check blade orientation: The spindle is handed (left or right on some decks). Verify you’re replacing the correct position—mixing sides can cause belt misalignment.

Should You Buy It

If you need a budget-friendly replacement for a failed spindle on a 54-inch Cub Cadet, Troy-Bilt, or MTD Gold tractor and don’t mind a bit of DIY labor, this is a solid choice. It’s not built for heavy commercial use, but for residential mowing, it delivers reliable performance at half the OEM price.