8TEN LawnRAZOR Mower Blade for Murray MK Mower 20 inch Deck 43865E701 471548MA 71548E701 71548E701MA (Mulching)
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🛒 See Price on AmazonWhat It Is
The 8TEN LawnRAZOR Mower Blade is a mulching blade designed for 20-inch Murray MK mowers, replacing OEM part numbers 43865E701, 471548MA, 71548E701, and 71548E701MA. It’s intended to cut grass into fine clippings that decompose quickly, returning nutrients to the lawn.
Fitment & Compatibility
Before buying, verify your mower has a 20-inch cutting deck (measure from blade tip to tip). This blade fits Murray MK series models specifically, not all Murray mowers. Check your old blade for OEM numbers listed above. The blade is aftermarket, not OEM Murray, but matches the original dimensions: 20-inch length, 0.25-inch thickness, 0.75-inch center hole, and a 2.0-inch offset. If your blade has a different hole or offset, it won’t fit. Confirm the blade’s center hole diameter and offset by measuring your current blade.
Key Things to Know
- Mulching vs. standard: This blade has a curved, high-lift design to recirculate clippings. It works best without a bag or side discharge—use a mulching plug if your mower has one.
- Installation: Easy swap with a socket wrench. Torque the blade bolt to 30-40 ft-lbs (check your mower manual). The blade is sharp out of the box; handle with gloves.
- Durability: Heat-treated steel, but aftermarket blades may wear faster than OEM. Expect 15-20 hours of use before dulling, depending on grass conditions.
- Gotcha: Some users report needing to rebalance the blade with a balancer before first use—vibration can loosen bolts. Also, double-check deck clearance; this blade’s offset may be slightly taller than OEM, risking deck contact on uneven ground.
Should You Buy It
If you own a 20-inch Murray MK mower and want an affordable mulching blade with solid reviews (4.7 stars), this is a good choice. It’s ideal for homeowners who prioritize fine clippings over bagging and don’t mind a quick install. Avoid if you need OEM precision for commercial use or have a non-MK Murray model.
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