Maxpower 336139 Secondary Belt for Craftsman, Husqvarna, Poulan Replaces OEM #'s 144959, 532144959, PP12012, 531307218

What It Is

The Maxpower 336139 is a secondary drive belt for riding lawn mowers with 42-inch or 46-inch decks, commonly used on Craftsman, Husqvarna, and Poulan models. It transfers power from the engine to the deck blades via the blade spindle pulley system.

Fitment & Compatibility

Before buying, verify your mower’s deck size (typically 42" or 46") and check your OEM part number against the replacements listed: 144959, 532144959, PP12012, or 531307218. This is a secondary belt—do not confuse it with the primary/engine drive belt. Measure your old belt length (roughly 91.5 inches) and width (1/2 inch) to confirm. It fits most Craftsman LT1000/1500/2000 series, Husqvarna GTH/GT series, and Poulan Pro models, but always cross-reference your specific model number on the manufacturer’s site or with a dealer. The aftermarket Maxpower belt is slightly longer than some OEM belts, so check for proper tension after install.

Key Things to Know

• Quality is good for the price – Users report it lasts 1-2 seasons with normal residential use, but not as long as OEM belts under heavy or commercial mowing.
• Installation is moderate – You’ll need to remove the deck and possibly the blade pulleys. Have a socket set and a belt routing diagram handy (check your manual or online).
• Common gotcha – The belt may feel loose initially; it often requires a half-hour of run-in to seat properly. If it still slips, recheck routing or tensioner spring condition.
• Not for zero-turn mowers – This belt is designed for lawn tractors, not ZTR models.

Should You Buy It

If you need a reliable, budget-friendly replacement for a Craftsman, Husqvarna, or Poulan secondary belt and can handle basic deck removal, this is a solid choice. It’s not built for extreme durability, but for typical residential mowing at $18, it offers excellent value and high user satisfaction. Skip it if you want OEM-only parts or mow commercially.