137380 One (1) 50" Deck Rebuild Kit Fits Craftsman Decks

What It Is

This 50-inch deck rebuild kit (part #137380) replaces all critical wear components on Craftsman 50-inch mower decks—spindles, bearings, pulleys, and hardware. It’s designed for restoring cutting performance on mid-to-large lawn tractors, not zero-turn or walk-behind mowers.

Fitment & Compatibility

Before buying, confirm your deck is exactly 50 inches (measure blade tip to blade tip). This kit fits Craftsman models with stamped steel 50-inch decks, typically found on LT1000, LT2000, and GT3000 series tractors built from the early 2000s through 2010s. It is not compatible with Husqvarna, MTD, or John Deere decks. Check your mower’s model number (under seat or on frame) against the kit’s OEM cross-reference: replaces Craftsman part #s 532137380, 137380, and 532188580. Measure spindle bolt pattern (3-bolt, 4-inch center) and pulley diameter (4.5-inch) to be safe.

Key Things to Know

• Quality: Kit includes OEM-grade spindles, sealed bearings, and a belt. Some users report bearings last 2–3 seasons with regular use.
• Installation difficulty: Moderate. Requires removing the deck, pulling old spindles, pressing out bearings, and reassembling. Expect 2–3 hours with basic tools (socket set, hammer, punch, press or C-clamp).
• Common gotchas: The included hardware may not match all deck variations—keep original bolts. Spindle shafts can seize; use penetrating oil and a puller. Do not overtighten spindle nuts (torque to 30–35 ft-lbs).
• Missing parts: Kit does not include blade bolts or a new deck belt—check those separately.

Should You Buy It

Yes, if you own a Craftsman 50-inch deck tractor with worn spindles (vibration, uneven cut, or metal-on-metal noise) and want a complete, time-saving rebuild in one box. Skip if your deck is smaller or from another brand, or if you only need one spindle—buying individual parts is cheaper then.