8TEN LawnRAZOR Mower Blade Set for Husqvarna 532403107 YTH 21K46 20K46 2246LS 46 Inch Cut Deck (Mulching)

What It Is

This is a set of three mulching blades designed to replace the OEM Husqvarna 532403107 blades on 46-inch cutting decks, used for shredding grass clippings into fine particles that decompose quickly as lawn fertilizer.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Only fits 46-inch cutting decks. Measure your deck width to confirm.
• Model check: Works with Husqvarna YTH 21K46, YTH 20K46, YTH 2246LS, and other 46-inch Husky riders using OEM part 532403107. Also fits some Poulan Pro, Craftsman, and AYP models with the same blade pattern. Cross-reference your owner’s manual or pull your current blade to compare.
• Measurements: Blade length should be 20.5 inches, center hole diameter 0.75 inches, and offset 0.5 inches. Confirm these match your existing blade.
• OEM vs aftermarket: This is an aftermarket set, not Husqvarna OEM. Quality is generally good, but tolerances can vary slightly.

Key Things to Know

• Installation difficulty: Easy—requires a socket wrench and torque wrench. Torque blade bolts to 70-90 ft-lbs. Use thread locker to prevent loosening.
• Mulching vs bagging: These are strictly mulching blades. They do not have a cutting edge for bagging or side discharge. If you frequently bag clippings, consider a different blade type.
• Common gotcha: The blades are sold as a set of three. Do not mix with other blade types on the same deck—balance and cutting quality will suffer.
• Sharpness out of box: Some users report needing to sharpen before first use for optimal cut. Check edge before installing.

Should You Buy It

Buy this set if you have a 46-inch Husqvarna or compatible rider, primarily mulch clippings, and want an affordable alternative to OEM blades with strong user satisfaction. Skip it if you need bagging or side-discharge blades, or if you prefer OEM parts for warranty or strict fitment peace of mind.