ACEBRI 742-05510-L 742P05510-L 46 inch Mower Blades for Cub Cadet MTD XT1-LT46 ZT1-46 XT2-LX46, ZTS1-46, Replace 742P05510-L, 490-110-C199, 2 Pack（Compatible with S-Shaped Center，Length 23 1/4）

What It Is

This is a 2-pack of aftermarket 46-inch mower blades designed for Cub Cadet and MTD zero-turn and lawn tractors with a 46-inch cutting deck. They replace OEM part 742-05510-L and are intended for mulching or standard bagging/discharge use on residential lawns.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: Must be exactly 46 inches (models like XT1-LT46, ZT1-46, XT2-LX46, ZTS1-46).
• Center hole shape: These have an S-shaped center hole (also called “star” or “twin-hole”). This is critical—square or oval holes won’t fit.
• Blade length: 23 1/4 inches from tip to tip. Measure your current blade; if it’s 23 1/4” with an S-center, these will match.
• OEM cross-reference: Replaces 742P05510-L and 490-110-C199. Not compatible with decks using a different hole pattern (e.g., 42-inch or 50-inch decks).

Key Things to Know

• Quality: Aftermarket blades, typically heat-treated steel. Expect similar lifespan to OEM (1-2 seasons for average use), but check for warping or dullness out of the box.
• Installation: Easy—remove the center bolt, swap blades, and torque to spec (usually 50-60 ft-lbs). Use a blade lock or block of wood to prevent spinning.
• Common gotcha: The S-shaped center must align with the spindle’s drive pins. If the blade doesn’t sit flat, you may have a different spindle design.
• Balance: Aftermarket blades sometimes need balancing. A simple blade balancer ($10) can prevent vibration and spindle damage.

Should You Buy It

If you own a Cub Cadet or MTD 46-inch deck tractor with an S-shaped center hole and want a budget-friendly replacement for OEM 742-05510-L, this is a solid choice. It’s ideal for homeowners doing routine blade swaps—just confirm the hole shape and length before purchase. Not recommended for commercial use or decks with non-S centers.