Murray 40 Lawn Mower Blade Belt '90-'97 37X62MA

What It Is

The Murray 37X62MA is a replacement blade drive belt for 40-inch lawn mower decks, specifically designed to transfer power from the engine pulley to the blade spindles. It fits select Murray riding mowers and tractors manufactured between 1990 and 1997.

Fitment & Compatibility

Before buying, verify your mower’s deck size is exactly 40 inches (not 38 or 42). This belt is OEM-equivalent for Murray part number 37X62MA and also replaces 3762MA, 3762X62MA, and 725-0451. It fits Murray models like 40500, 40506, 40508, and 40510 series from the early-to-mid 90s. Measure your old belt length: it should be 62.0 inches outside circumference and 1/2 inch wide. Cross-reference with your mower’s model number (not the engine number) under the seat or on the frame. Not compatible with newer Murray decks or non-Murray brands without adapter kits.

Key Things to Buy

• Quality vs. OEM: Aftermarket belts in this price range often match OEM specs but may wear faster on uneven pulleys. Expect 2-3 seasons with normal use.
• Installation difficulty: Moderate. You’ll need to remove the deck, release the idler pulley tension, and route the belt around all three spindles and the engine pulley. A diagram inside the deck cover helps—take a photo before removing the old one.
• Common gotcha: The belt must seat fully in all pulley grooves. A misrouted belt will slip or throw off balance, causing uneven cutting or belt snap. Check for worn spindles or bent pulleys before installing.
• Aftermarket fit: Some aftermarket versions are slightly thicker, causing tight routing or premature wear. Stick with belts labeled as direct replacements for 37X62MA.

Should You Buy It

If you own a 1990–1997 Murray 40-inch riding mower and need a reliable, budget-friendly blade belt replacement, this is a solid choice. It’s well-reviewed for fit and durability on original Murray decks. Avoid it if your deck is a different size, your model is newer than 1997, or if you have a non-Murray brand without adapter pulleys.