618-04456 918-04461 Spindle Assembly, 42" Deck Fit for Cub Cadet LT1040 LT1042 Toro LX420 LX425 Mower, Replaces 618-0624 618-04461 918-04456 2 Pack

What It Is

This is a replacement spindle assembly for 42-inch cutting decks on select Cub Cadet and Toro lawn tractors. It houses the bearings and pulley that spin the mower blade, critical for a clean, even cut.

Fitment & Compatibility

Before buying, confirm your mower’s deck size is exactly 42 inches and check your model number against the list: Cub Cadet LT1040, LT1042, Toro LX420, LX425, and others using the same 42" stamped deck. This aftermarket part replaces OEM numbers 618-0624, 618-04461, 918-04456, and 918-04461. Measure the spindle shaft diameter (typically 0.625" or 5/8") and the bolt pattern (usually 3-bolt, 3.25" center-to-center). Verify your pulley width matches—this assembly uses a 3.5" OD pulley with a 5/8" bore. If your deck uses a different pulley or bearing size, it won’t fit.

Key Things to Know

• Quality: Aftermarket, not OEM. Likely uses standard-grade bearings. Expect comparable lifespan to original if properly greased, but may vary.
• Installation difficulty: Moderate. Requires removing the deck, belt, and blade. A pulley puller and impact wrench help. Allow 1–2 hours for both spindles.
• Common gotchas: The spindle housing bolts may be rusted or seized—soak with penetrating oil. Torque blade bolts to 40–50 ft-lbs. Ensure the pulley aligns with the deck belt path after installation.
• Tip: Replace both spindles at once if one failed, to avoid uneven wear and future downtime.

Should You Buy It

If you own a 42" Cub Cadet LT series or compatible Toro LX model and need a budget-friendly, two-pack replacement, this is a solid choice. It’s best for DIY homeowners comfortable with basic mechanical work. For commercial use or if you want OEM exactness, spend more on a genuine Cub Cadet assembly.