143" x 1/2" Mower Belt for John Deere M155525 M123281 M154601 GX10176 Ariens 07241600 7241600 Sabre 1646HS 1846HV 2046HV Scotts S2046 S2546

What It Is

This is a 143-inch long, 1/2-inch wide V-belt that drives the mower deck blades on select John Deere, Ariens, Sabre, and Scotts lawn tractors. It’s designed for 46-inch and 54-inch cutting decks on gas-powered zero-turn and riding mowers.

Fitment & Compatibility

• Measure your old belt: Length must be exactly 143" and width 1/2". Use a tape measure (not string) for accuracy.
• Cross-reference OEM numbers: Fits John Deere M155525, M123281, M154601, GX10176; Ariens 07241600/7241600; Sabre 1646HS, 1846HV, 2046HV; Scotts S2046, S2546.
• Check deck size: Works with 46" and 54" decks only. Not for 42" or 48" decks.
• Aftermarket vs OEM: This is a Scotts-branded aftermarket belt, not genuine John Deere. It may vary slightly in rubber hardness or stretch over time.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt guard and tensioner. Have a wrench and a belt installation tool (or a long screwdriver) handy.
• Common gotcha: The belt routing diagram is often missing from aftermarket packaging. Snap a photo of your old belt’s path before removing it.
• Quality vs price: At $27.99, it’s cheaper than OEM ($40–$60). Some users report shorter lifespan (1–2 seasons vs 3–4 for OEM) under heavy use.
• Tension check: If the belt slips or squeals after install, adjust the tensioner pulley. A loose belt will wear faster and damage pulleys.

Should You Buy It

Buy this if you need a budget-friendly replacement for a 143" x 1/2" belt on a 46" or 54" deck and are comfortable with basic deck maintenance. Skip it if you want maximum durability for commercial use or prefer OEM fitment—spend the extra $15–$30 on a genuine John Deere belt.