137153 139573 158818 Drive Belt 1/2" X 83" Fits for Craftsman AYP Poulan Husqvarna Lawn Mower Belt

What It Is

This is a 1/2" wide by 83" long drive belt designed for riding lawn mowers and zero-turn mowers from Craftsman, AYP, Poulan, and Husqvarna. It transfers power from the engine pulley to the transmission or deck, enabling blade and drive engagement.

Fitment & Compatibility

• Measure first: Confirm your old belt is exactly 1/2" wide and 83" long (end-to-end, not around). A half-inch off can cause slipping or poor engagement.
• Cross-reference OEM numbers: This belt replaces Craftsman 137153, 139573, 158818, and equivalent AYP/Poulan/Husqvarna part numbers. Check your owner’s manual or the existing belt’s stamped number.
• Deck size not a direct indicator: This belt fits various deck sizes (42", 46", 48", 50") depending on the specific model. Always verify by belt length, not deck size.
• Aftermarket vs OEM: This is an aftermarket belt. It meets OEM specs but may have slight differences in material or construction. It’s a common, reliable replacement for worn OEM belts.
• Check pulley condition: Worn or misaligned pulleys can cause premature belt failure. Inspect for cracks, rust, or wobble before installing.

Key Things to Know

• Quality: Made from standard rubber/cord material. Rated for residential use; not ideal for heavy commercial or constant wet/muddy conditions.
• Installation difficulty: Moderate. You’ll need to remove the mower deck or use a belt routing diagram (found online or in your manual). A belt tensioner tool helps.
• Common gotcha: If the belt is too tight or too loose after installation, re-check routing. Some models require specific belt guides or idler pulley positions.
• Durability: Expect 1–2 seasons of normal residential use. Inspect periodically for fraying or glazing.

Should You Buy It

If you need a direct, budget-friendly replacement for a worn 1/2" x 83" drive belt on a Craftsman, AYP, Poulan, or Husqvarna riding mower, this is a solid choice. It’s well-reviewed and fits common residential models. Avoid if you need a heavy-duty or commercial-grade belt.