490-501-M044 42" Deck Belt Compatible with Troy-Bilt 1747938 GW-1747938, Super Bronco 42 Hydro, TB42, Pony 42X/42T, Horse 42 Hydro, Pony 42, TB1942, TB2246, TB42 Hydro, TB2142

What It Is

This is a 42-inch deck drive belt (OEM cross-reference 1747938 / GW-1747938) that transfers power from the engine pulley to the mower deck spindles on select Troy-Bilt lawn tractors. It’s designed for medium-duty residential mowing on 42-inch cutting decks.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch stamped steel deck and that your model appears in the list above (e.g., Super Bronco 42 Hydro, TB42, Pony 42X/42T, Horse 42 Hydro, TB1942, TB2246, TB42 Hydro, TB2142). Do not rely on brand alone – measure your old belt length (should be roughly 92.5 inches long, 1/2 inch wide). This is an aftermarket belt, not OEM Troy-Bilt. If your deck has a different idler arm setup or you have a fabricated deck, this belt likely won’t fit.

Key Things to Know

• Quality variance: Some users report shorter lifespan (1-2 seasons) compared to OEM belts, especially if you mow thick/wet grass frequently.
• Installation tip: Route the belt exactly as the original – use a diagram or take a photo before removal. The belt tension is critical; too loose and it slips, too tight and it wears pulleys.
• Common gotcha: This belt may be slightly narrower or thinner than OEM. If your deck has heavy rust or worn pulleys, it can cause premature fraying or slipping.
• Return policy: Since it’s aftermarket, check the seller’s return policy before ordering – fitment issues are rare but possible on older deck models.

Should You Buy It

Buy this if you own one of the listed Troy-Bilt models and need a budget-friendly replacement for a season or two of light-to-medium mowing. It’s a solid value at $18.88, but if you mow large lawns in harsh conditions or want maximum durability, spend more on an OEM belt.