618-06989 Deck Rebuild Kit for 46 inch MTD Craftsman T1600 T1900, Spindle 918-06989, Blade 742-04244 742-04290, Belt 754-04219 954-04219, fitsTroy Bilt Bronco 13AL78KT066

What It Is

This deck rebuild kit consolidates all wear items for a 46-inch cutting deck on select MTD, Craftsman, and Troy-Bilt lawn tractors. It includes two spindles, two blades, a drive belt, and necessary hardware—designed for a full deck overhaul rather than a single-part replacement.

Fitment & Compatibility

• Deck size: 46 inches, confirmed for Craftsman T1600, T1900, and Troy-Bilt Bronco 13AL78KT066.
• Spindle: Replaces OEM 918-06989 (also fits 918-06989A). Measure spindle housing bolt pattern (typically 4-bolt, 3.5-inch center-to-center) to verify.
• Blades: Uses 742-04244 or 742-04290. Check blade length (20 inches) and center hole diameter (usually 1 inch or 7/16 inch with a star pattern). Compare with your existing blade.
• Belt: Replaces 754-04219 and 954-04219. Measure your old belt length (approx. 96.5 inches) and width (1/2 inch) to confirm.
• Aftermarket note: This is a non-OEM kit. Verify all part numbers against your model’s OEM parts list before buying—especially the belt routing and spindle bearing type.

Key Things to Know

• Quality variance: At a 3.8 rating, some users report spindles failing sooner than OEM. Inspect bearings for smooth rotation before installation.
• Installation difficulty: Moderate. Requires removing the deck, swapping spindles, blades, and belt. Expect 1–2 hours with basic hand tools (socket set, wrench, jack stands).
• Common gotcha: The kit may not include spindle lock nuts or blade bolts—reuse yours or buy separately. Also, blade orientation (sharp edge forward) is critical.
• Belt tension: After installing, check belt tension per your manual. Too tight can damage spindles; too loose causes slipping.

Should You Buy It

This kit is a cost-effective option if you need to replace two spindles, blades, and a belt simultaneously on a 46-inch MTD/Craftsman/Troy-Bilt deck. It’s best for DIYers comfortable with moderate mechanical work and willing to accept aftermarket quality. If you prefer OEM reliability or only need one component, buy individual parts instead.