2 Pack 783-06424A-0637 Black Deck Belt Cover/Deck Spindle Pulley Belt Guard Cover Compatible with MTD Craftsman Troy-Bilt Mowers, Work with Many 42" and 46" Cut Deck Tractors, Replaces 783-06424A

What It Is

This is a pair of black deck belt covers (also called spindle pulley belt guards) that shield the drive belt and pulleys underneath your mower deck. They protect against debris jamming the belt system and reduce the risk of belt derailment during operation. Designed for many 42” and 46” cut deck tractors.

Fitment & Compatibility

Before buying, check these three things:

• Deck size: Works with most 42” and 46” stamped steel decks. Not compatible with fabricated (fab) decks or 48”+ decks.
• Model/brand: Fits many MTD, Craftsman, Troy-Bilt, and Yard Machines tractors from the 2000s–2010s. Common models include Craftsman 917 series, Troy-Bilt TB30/42/46, and MTD 700/800 series.
• OEM number: Replaces OEM 783-06424A. If your original part number is different, measure the mounting hole spacing (typically 3.5” center-to-center) and overall length (about 10”). The guard must sit flush against the deck without rubbing the spindle pulley.

Quick check: Look under your deck—if the cover is cracked or missing, measure the mounting holes and compare to the product listing photos.

Key Things to Know

• Material: Made of black plastic (likely polypropylene or nylon). It’s durable but can crack if overtightened or hit hard. Use hand tools only—don’t impact-drive the bolts.
• Installation: Easy—usually two bolts (often ¼” or 5/16”) hold it. Remove old cover, align new one, and tighten. No special tools needed. Takes about 10 minutes.
• Common gotcha: The cover may sit slightly higher than OEM on some decks. If it rubs the belt or pulley, add a thin washer between the cover and deck to space it out.
• Pack includes two covers (one for each spindle pulley). You may only need one—check if both are missing or damaged.

Should You Buy It

If your mower’s belt guard is cracked, missing, or you’re replacing the belt and want proper protection, this is a solid, budget-friendly option. It fits most common 42”/46” MTD-family tractors, installs easily, and has strong user reviews. Skip it only if your deck is fabricated or uses a non-rectangular guard design.