532139573 Deck Belt 1/2" x 83" Primary Mower Belt Replacement for 139573, Compatible with Husqvarna, Poulan, AYP Riding Lawn Mower GT190 GTH220 GTH2250 GTH2550XP and More

What It Is

The 532139573 is a primary deck drive belt (1/2" wide, 83" long) that transfers power from the engine pulley to the mower deck spindles. It’s designed for mid-to-large riding mowers—typically 42–54 inch decks—used on residential properties.

Fitment & Compatibility

Before buying, verify three things:

• OEM part number: 532139573 (also listed as 139573). This belt is an OEM Husqvarna replacement, not a universal aftermarket belt—fitment is exact.
• Measure your old belt: 1/2" width x 83" length. If your old belt is 1/2" x 82" or 84", this won’t work.
• Deck size: Works with 42", 46", 48", 50", and 54" decks on specific models. Common compatible models: Husqvarna GT190, GTH220, GTH2250, GTH2550XP; Poulan PPB42, PB46; AYP (American Yard Products) mowers. Check your model number’s parts diagram—some decks use a different primary belt length.

Not compatible with zero-turn mowers, older 38" decks, or models requiring a 3/8" wide belt.

Key Things to Know

• Quality: OEM Husqvarna belt—good tension, resists cracking and stretching. Expect 2–3 seasons with normal use.
• Installation: Moderate difficulty. Requires removing the deck or using a spring tool to release tension. Route belt around all three spindles and the engine pulley in the correct pattern (check your deck diagram—routing varies by model).
• Common gotcha: If your deck has a tensioner pulley, ensure it moves freely before installing the new belt. A stuck tensioner will wear the belt quickly.
• Price/value: $11.99 is fair for an OEM belt—aftermarket belts at similar price may wear faster.

Should You Buy It

Yes, if you need a direct OEM replacement for a Husqvarna, Poulan, or AYP riding mower with a 1/2" x 83" primary belt. Avoid if your deck requires a different length or width, or if you’re after a budget aftermarket belt. For the price, this is a reliable, drop-in fix.