46 inch Mower Deck Rebuild Kit for MTD Craftsman T1600 T1900 Troy Bilt Bronco Horse XP 13AL78KT066 Lawn Mower Include 2 Spindle 618-06989 918-06989 2 Blade 742-04244 742-04290 1 Belt 754-04219 Review

Overview

If your MTD-built lawn tractor (Craftsman T1600/T1900, Troy-Bilt Bronco, or Horse XP) has started vibrating like a paint mixer or leaving uncut strips in its wake, this 46-inch deck rebuild kit is your ticket to a smooth, even cut. Designed for the DIY homeowner who wants to restore factory-level performance without buying a new mower, this kit bundles two spindles, two blades, and a drive belt into one convenient package. It’s a complete, cost-effective solution for decks that have logged a few hundred hours and are overdue for serious maintenance.

Who Should Buy This

• Homeowners with 1–3 acre lawns who own a 46-inch MTD or Craftsman tractor and have noticed uneven cutting, excessive vibration, or belt wear. If your deck has 200+ hours, this kit is a no-brainer.
• DIY mechanics who prefer one-stop shopping instead of hunting down individual spindles, blades, and a belt. This bundle saves you the hassle of cross-referencing multiple part numbers.
• Budget-conscious owners who want to extend their tractor’s life for under $90. A new deck assembly can cost $400+; this rebuild kit is a fraction of that.
• Owners of Troy-Bilt Bronco or Horse XP tractors with 13AL78KT066 or similar model numbers. This kit is specifically engineered for these chassis, so fitment is nearly guaranteed.

Key Features Breakdown

• 2 Spindles (Parts 618-06989 / 918-06989): These are the heart of the rebuild. Worn spindle bearings cause wobbling blades, which tear grass instead of cutting it cleanly. The included spindles come pre-greased and with new bearings, so you eliminate vibration and get a precise, scissor-like cut. They’re direct replacements for OEM parts, meaning no drilling or modification.
• 2 Blades (Parts 742-04244 / 742-04290): These are high-lift blades designed for bagging and side-discharge performance. They’re 46-inch deck specific, so they match the exact length and mounting pattern. Sharp new blades improve cut quality and reduce engine strain—dull blades are the #1 cause of brown-tipped grass.
• 1 Belt (Part 754-04219): The drive belt is often overlooked in a rebuild, but a stretched or glazed belt slips under load, robbing you of blade speed. This belt is a direct fit for the 46-inch deck’s engagement system. Replacing it alongside the spindles ensures the whole driveline operates with consistent tension.
• Complete Kit Approach: Instead of buying parts piecemeal, this bundle ensures everything is compatible. No guessing if the belt matches the spindles or if the blades fit the new spindle hubs.

Pros

1. Perfect fit for common MTD platforms. Owners of Craftsman T1600, T1900, and Troy-Bilt Bronco models report bolt-on installation with zero modifications. The spindles align with existing deck holes, and the belt routes exactly like the original.
2. Eliminates vibration immediately. Worn spindles are the main culprit behind a shaking deck. Users note a night-and-day difference after swapping these in—smooth operation at full throttle.
3. Saves money vs. buying OEM parts individually. A single OEM spindle can cost $35–$50. This kit gives you two spindles, two blades, and a belt for $88—that’s roughly the price of one spindle at a dealer.
4. Restores cutting performance. Dull blades and wobbly spindles leave uncut grass. With fresh blades and tight spindles, you’ll get a clean, even cut even in thick fescue or Bermuda.
5. Pre-lubricated spindles. No need to pack grease or worry about dry bearings. They’re ready to install out of the box.
6. Solid value for the DIYer. If you can turn a wrench and have a socket set, you can do this job in under two hours. It’s one of the most impactful maintenance tasks for a mid-life tractor.

Cons

1. Not an OEM-branded kit. While the parts are functionally identical to Craftsman/Troy-Bilt originals, some purists prefer factory packaging. The spindles and blades are aftermarket replacements, so quality control can vary slightly between batches.
2. Blades may need balancing. A few users report that the included blades are slightly out of balance out of the box. A $10 blade balancer and a quick file job solves this, but it’s an extra step you don’t get with premium blades.
3. Belt length can be finicky on older decks. If your deck has significant wear or bent pulleys, the belt may feel tight or loose. This isn’t a kit flaw, but it means you might need to inspect your pulley condition before installing.
4. No installation hardware included. You’ll reuse your existing bolts, washers, and lock nuts. If your hardware is rusted or stripped, you’ll need to source replacements separately.

Bottom Line

This 46-inch deck rebuild kit is the smartest $88 you’ll spend on an aging MTD or Craftsman tractor. It directly addresses the three most common failure points—wobbly spindles, dull blades, and a slipping belt—in one tidy package. If you’re comfortable with basic mechanical work (removing the deck, swapping spindles, and routing a belt), you can bring a tired mower back to life in an afternoon. It’s not for someone who wants OEM packaging or who has a severely bent deck shell, but for the vast majority of homeowners with a T1600, T1900, Bronco, or Horse XP, this kit delivers exceptional value. Strongly recommended for anyone wanting to avoid a $400+ deck replacement.

Frequently Asked Questions

Q: Will this fit my Craftsman T1600 with a 46-inch deck?
A: Yes, it’s designed specifically for MTD-built tractors with 46-inch decks, including the Craftsman T1600 and T1900. Double-check your model number (e.g., 13AL78KT066) to confirm, but this is a direct replacement for the factory spindles, blades, and belt.

Q: Do I need to replace all three spindles? This kit only includes two.
A: Most 46-inch decks have two spindles (left and right) and a center idler pulley that doesn’t wear the same way. The kit covers the two main cutting spindles, which are the ones that cause vibration and cut quality issues. If your center pulley is noisy, you’ll need to buy that separately.

Q: How hard is the installation?
A: It’s a moderate DIY job. You’ll need to remove the mower deck from the tractor, flip it over, and un