46" Mulching Blade Set

What It Is

This is a 46-inch mulching blade set designed to replace OEM blades on select riding lawn mowers. It is intended for residential mulching applications, where fine clippings are recirculated and left on the lawn as fertilizer.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: This set fits mowers with a 46-inch cutting deck only. Measure your deck’s width if unsure.
• Blade measurements: Each blade is approximately 18 inches long, with a 1-inch center hole and a 0.5-inch star or oval drive hole. Check your current blade’s center hole shape and size—some brands use a different pattern (e.g., 7-point star or 5-point star). Measure the blade length from tip to tip and the center hole diameter.
• Brand/model: This set is compatible with many popular riding mowers (e.g., John Deere, Craftsman, Husqvarna, MTD, Troy-Bilt) that use a 46-inch deck and accept standard 18-inch mulching blades. Cross-reference your mower’s model number with the seller’s compatibility list. It is an aftermarket part, not OEM, so minor fit variations may occur.

Key Things to Know

• Quality: Made of heat-treated steel, but some users report thinner metal than OEM blades. Expect 2–3 seasons of residential use before needing replacement.
• Installation: Easy for DIYers—requires a socket wrench and blade removal tool. Always disconnect the spark plug and wear gloves. Torque to 70–90 ft-lbs.
• Common gotcha: Mulching blades have a curved, high-lift design; they will not bag or side-discharge as effectively as dedicated blades. If you switch between modes, keep a separate set.
• Balance: After installation, check blade balance on a balancer. Unbalanced blades cause vibration and poor cut quality.

Should You Buy It

This set is a solid budget-friendly option if you strictly mulch your lawn and need a replacement for a common 46-inch deck. It’s not for commercial use or if you need precise OEM fit—choose OEM if you have a rare deck or want guaranteed fit. Good for the price, but verify your blade’s center hole shape first.