618-09260 Spindle Assembly Compatible with Cub-Cadet 42" Deck Mower, 618P09260 Deck Spindle Compatible with MTD Craftsman Troy-Bilt ZT1-42 ZTS1-42 Z5200 42 Inch Deck Zero-Turn Mower

What It Is

This spindle assembly (part number 618-09260 / 618P09260) connects the mower blade to the deck pulley and houses the bearings that allow the blade to spin freely. It’s designed for 42-inch deck zero-turn and riding mowers from Cub Cadet, MTD, Craftsman, and Troy-Bilt, including the ZT1-42, ZTS1-42, and Z5200 series.

Fitment & Compatibility

Before buying, check three things:

• Deck size: Only for 42-inch decks. Will not fit 46-, 50-, or 54-inch decks.
• Model number: Look for a model tag under the seat or on the frame. Compatible with Cub Cadet LTX1042, RZT42, and similar; MTD 13AN77BS099; Craftsman 917.289260; Troy-Bilt 13WQ78BS099. Also fits many zero-turn mowers with 42-inch fabricated or stamped decks.
• OEM vs aftermarket: This is an aftermarket replacement for OEM part 618-09260. Measure the spindle shaft length (typically 3.25 inches) and bolt pattern (two-bolt, 3.0-inch center-to-center) to confirm. Compare to your old spindle before installing—some aftermarket units use slightly different bearing seals.

Key Things to Know

• Quality note: Uses standard sealed ball bearings—adequate for residential use but may wear faster than OEM under heavy commercial mowing. Check for smooth rotation before installing.
• Installation difficulty: Moderate. Requires removing the blade, pulley, and retaining bolts. A puller tool may be needed if the old spindle is seized. Torque the blade bolt to 40–50 ft-lbs.
• Common gotcha: The spindle housing may be slightly shorter or taller than OEM by 1/8 inch. Verify blade clearance with the deck shell before tightening everything down.
• Includes: Spindle assembly only—no pulley, blade, or hardware. Reuse your existing pulley unless it’s worn.

Should You Buy It

If you have a 42-inch residential zero-turn or riding mower from Cub Cadet, MTD, Craftsman, or Troy-Bilt and need a budget-friendly replacement for a worn or noisy spindle, this is a solid choice. It’s not built for heavy commercial use, but for typical homeowner mowing, it will get you back cutting grass quickly without the OEM price tag.