Murray 42 Lawn Mower Blade Belt '90-'96 37X75MA

What It Is

The Murray 37X75MA is a replacement blade belt designed to drive the blades on 42-inch Murray riding mowers and lawn tractors from 1990 to 1996. It’s a standard V-belt that connects the engine pulley to the spindle pulleys under the deck.

Fitment & Compatibility

Before buying, confirm your mower has a 42-inch cutting deck and was built between 1990 and 1996. This belt fits most Murray models from that era with a 42-inch deck (e.g., 42 Series, 42500 Series), but it’s not universal for all Murray mowers. Measure your existing belt length—the 37X75MA is 75 inches long and 3/8-inch wide. If your belt is longer or shorter, this won’t work. Check the OEM part number: Murray 7375MA or 37X75MA. Aftermarket versions are common but verify the cross-reference matches your model number. Look up your tractor’s model number (under the seat or on the frame) and confirm it’s listed in the belt’s compatibility chart.

Key Things to Buy

• Quality: Most aftermarket belts are rubber or Kevlar-reinforced. OEM belts are usually more durable, but this aftermarket option holds up well for light to medium use. Inspect for fraying or cracks before installation.
• Installation difficulty: Moderate. You’ll need to remove the deck or at least the belt guard. A belt tensioner tool or a pry bar helps. Expect 30-60 minutes if you’re handy.
• Common gotchas: The belt routing is specific—wrong path causes slipping or blade failure. Take a photo before removal. Also, the belt may be slightly tight; don’t force it—check pulley alignment.
• Wear signs: Replace if the belt is glazed, cracked, or has visible wear. A slipping belt under load is a clear sign it’s time to swap.

Should You Buy It

If you own a 1990-1996 Murray 42-inch riding mower and need a reliable, budget-friendly replacement for the original belt, this is a solid choice. It’s not for heavy commercial use, but for home lawn care, it offers good value and fitment accuracy. For non-Murray or different deck sizes, skip it.