42" Deck Rebuild Kit for MTD Cub Cad et Tro y-Bi lt, (2) Spindle 618-04822 (2) Mower Blade 742-04308 (2) 956-04129 Idler Pulley (1) Belt 754-04060, Compatible with RZT L42 S42 SX42 LT1500 LTX1040

What It Is

This 42-inch deck rebuild kit includes two spindles (618-04822), two blades (742-04308), two idler pulleys (956-04129), and one drive belt (754-04060) for MTD, Cub Cadet, Troy-Bilt, and Yard Machines mowers with 42-inch fabricated or stamped decks. It’s designed for homeowners replacing worn-out cutting components as a set rather than piecemeal.

Fitment & Compatibility

Before buying, confirm your deck is exactly 42 inches (cutting width) and that your mower uses MTD-style spindle assemblies. This kit is compatible with RZT L42, S42, SX42, LT1500, and LTX1040 series, plus many other MTD/Cub Cadet/Troy-Bilt models from the early 2000s onward. Check your existing spindle part number—if it’s 618-04822, these drop in. Measure the spindle shaft diameter (typically 5/8 inch) and bolt pattern (usually three bolts). The belt 754-04060 is 1/2 inch wide by 92.5 inches long; verify your old belt’s length and width. Pulleys 956-04129 are 4-inch diameter with a 5/8-inch bore. Blades 742-04308 are 15.5 inches long with a 5-point star center hole. If your mower uses different blade length or spindle shaft, this kit won’t fit.

Key Things to Know

• Quality is mixed: spindles and pulleys are aftermarket steel, but some users report bearing noise within a season. Blades are basic stamped steel—fine for regular grass but dull fast on thick or wet turf.
• Installation is moderate difficulty (2–3 hours). You’ll need wrenches, a socket set, a torque wrench (spindle bolts: 30–40 ft-lb), and likely a puller for old spindles. Deck removal is recommended.
• Common gotcha: the included belt may be slightly tight or loose on some decks. Have a belt tension gauge ready. Also, idler pulley bearings are sealed but not greaseable—replace them as a set if one fails.
• Always check deck spindle housing for cracks or wear before installing new spindles. Bent or worn housing will ruin new parts quickly.

Should You Buy It

If you have a 42-inch MTD/Cub Cadet/Troy-Bilt mower with worn spindles, blades, pulleys, and belt, this kit saves you time and shipping costs versus buying each part separately. It’s a budget-friendly option for homeowners who want a one-and-done refresh and can handle moderate DIY work. But if you mow heavy commercial use or want premium bearings/longer blade life, buy OEM spindles and high-end blades individually.