Aeagle 618-06989 918-06989 Spindle Assembly Fit for 46" Deck MTD T1600 T1500 LT 4600 T1700 T1900 CLT46CVT TB46 Troy Bilt Horse 46 XP (2 Pack)

What It Is

This is a replacement spindle assembly (2-pack) for 46-inch cutting decks on select MTD, Troy-Bilt, and Craftsman lawn tractors. It connects the blade to the deck’s drive system, enabling blade rotation for cutting grass.

Fitment & Compatibility

• Deck size: Fits only 46-inch decks. Measure your deck width before ordering.
• Compatible models: MTD T1600, T1500, LT 4600, T1700, T1900, CLT46CVT, TB46; Troy-Bilt Horse 46 XP. Also fits some Craftsman LT models with 46-inch decks using MTD-style spindles.
• OEM cross-reference: Replaces OEM part numbers 618-06989 and 918-06989. Check your existing spindle for these numbers.
• Measurements: Verify spindle shaft diameter (typically 5/8-inch) and bolt pattern (4 bolts, 3-inch center-to-center). Measure your old spindle’s housing height to ensure clearance under the deck.
• Aftermarket note: Aeagle is a third-party brand. Confirm your deck uses the standard MTD square or round spindle housing (these are square).

Key Things to Know

• Build quality: Customers report solid steel housing and sealed bearings. Should last 2-3 seasons with normal use.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle, and transferring the pulley and blade. Basic hand tools and a jack/stand needed.
• Common gotcha: Pulley nut and blade bolt may be reverse-threaded on some MTD decks. Check before forcing.
• 2-pack value: Buying as a pair saves ~$10 versus single units. Replace both at once to avoid uneven wear.

Should You Buy It

If you own a 46-inch MTD, Troy-Bilt, or compatible Craftsman tractor and need a reliable, budget-friendly spindle replacement, this 2-pack is a solid choice. It’s well-reviewed, fits correctly with minor mechanical skill, and saves money over OEM parts. Not for other deck sizes or brands like John Deere.