37X66MA Drive Belt for Murray 037X66MA 37X66 37X66MA Walker 710216 46404x21A 465602x8A Secondary Lawn Mower Blade Belt 1/2" x 47-1/4"

What It Is

This is a secondary drive belt (1/2" wide x 47-1/4" long) that transfers power from the engine pulley to the blade spindle on Murray riding mowers and select Walker models. It’s the belt that spins the blades, not the drive belt for the wheels.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Fits 42-inch and 46-inch Murray decks (e.g., 42" 465602x8A, 46" 46404x21A).
• Model numbers: Check your mower’s model plate for exact OEM numbers: 037X66MA, 37X66MA, 37X66, or cross-references like Walker 710216.
• Measurements: Must be 1/2" wide x 47-1/4" long. If your old belt is slightly different, this won’t work—measure the old belt (lay flat, measure inner circumference) to confirm.

Replaces OEM Murray 037X66MA and Walker 710216. Not for Husqvarna, Craftsman, or MTD unless the deck uses the same belt length.

Key Things to Know

• Quality: Aftermarket belt, not OEM. Many users report it’s slightly thinner or less durable than the original, but fine for light-to-medium use.
• Installation: Easy—remove deck, route belt around pulleys per diagram (usually a spring-loaded idler). No special tools needed, but a belt tension gauge helps.
• Common gotcha: The belt may be too tight or too loose if your deck’s idler pulley is worn. Check pulley condition before installing.
• Life expectancy: Expect 1-2 seasons with normal residential mowing. Heavy or wet grass will shorten it.

Should You Buy It

If you need a budget replacement for a Murray 42" or 46" deck (or compatible Walker) and don’t mow commercially, this belt is a solid value at $8.99. For heavy-duty or frequent mowing, consider an OEM Murray belt for longer life.