2 Set 783-06424A-0638 Deck Spindle Pulley Belt Guard Cover Compatible with MTD, Troy-Bilt, Craftsman Riding Lawn Mowers & Tractors with 42" and 46" Decks (Red)

What It Is

This is a set of two red metal belt guard covers (OEM part numbers 783-06424A and 0638) that sit over the deck spindle pulleys on MTD, Troy-Bilt, and Craftsman riding mowers and lawn tractors. They protect the belt from debris and prevent accidental contact with moving pulleys.

Fitment & Compatibility

• Deck size: Designed for 42-inch and 46-inch cutting decks only. Measure your deck width before ordering.
• Brands: Fits most MTD-built models under the Troy-Bilt, Craftsman, Cub Cadet, and Yard Machines brands from the late 2000s to present. Not compatible with John Deere, Husqvarna, or Toro.
• OEM cross-reference: Replaces OEM part numbers 783-06424A and 0638. Check your current guard for these numbers.
• Measurements: Each guard is roughly 6.5 inches long and 2.5 inches wide. Verify bolt hole spacing (typically 3.5 inches center-to-center) matches your spindle.
• Mounting: Uses two bolts per guard (not included). Confirm your deck has threaded holes or uses self-tapping screws.

Key Things to Know

• Quality: Made of stamped steel with a painted red finish. Durable but may chip if overtightened. Aftermarket, not OEM, but reviews indicate good fit.
• Installation: Easy—remove old guard, align new one, and tighten bolts. No special tools needed. Takes 10–15 minutes.
• Common gotcha: Guards may not fit decks with aftermarket spindles or non-standard pulley offsets. If your old guard was plastic, check bolt pattern compatibility.
• Set includes two guards: You get a left and right guard, but some decks only need one. Verify your deck uses two.

Should You Buy It

If you have an MTD-built riding mower with a 42" or 46" deck and your belt guard is broken, missing, or rusted, this is a solid, affordable replacement. It fits most standard setups, installs quickly, and has strong user ratings. Skip it if you have a different brand or a non-standard deck.