54" Deck 618-04126A Spindle Rebuild Kit for Cub Cadet SLT1554(Only Model 13AK11BK009 13AK11BK010) SLTX1054 SLT 5400 (13AP62TK090)-2008, for 618-04126 Spindle, 1 138" 5/8" Belt 754-0642

What It Is

This is a spindle rebuild kit for 54-inch Cub Cadet mower decks, designed to replace worn bearings and seals in the 618-04126 spindle assembly. It includes a 1 1/8" x 5/8" belt (part 754-0642) and is intended for specific SLT and 5400 series tractors from the late 2000s.

Fitment & Compatibility

Before buying, verify your mower’s model number exactly—this kit only fits Cub Cadet SLT1554 (models 13AK11BK009 and 13AK11BK010), SLTX1054, and SLT 5400 (model 13AP62TK090, 2008). Your deck must be 54 inches. The spindle part number should be 618-04126 (check the existing spindle housing for a stamped number). This is an aftermarket kit, not OEM Cub Cadet, so confirm the belt dimensions: 1 1/8" wide and 5/8" thick (measure your old belt if possible). It will not fit other deck sizes or non-listed models.

Key Things to Know

• Quality: Aftermarket bearings may have slightly shorter lifespan than OEM, but this kit is rated 4.4/5 and is a budget-friendly fix for worn spindles.
• Installation difficulty: Moderate—you’ll need to remove the deck, disassemble the spindle housing, press out old bearings, and install new ones. A bearing puller and press are helpful.
• Common gotchas: The belt included is a specific 1 1/8" x 5/8" size; ensure your deck uses this—not all 54" Cub Cadet decks do. Also, the kit rebuilds one spindle only; if multiple spindles are bad, you’ll need multiple kits.
• Check for additional wear: Inspect the spindle shaft and housing for damage before installing; if they’re scored or bent, a full spindle assembly may be needed instead.

Should You Buy It

Buy this kit if you have one of the listed Cub Cadet models with a 54-inch deck and a noisy or wobbly 618-04126 spindle, and you’re comfortable with a moderate DIY repair. It’s a cost-effective fix for a single spindle, but if you need OEM longevity or have multiple failed spindles, consider a full OEM spindle assembly instead.