UDC Parts 942-04308 942-04308A Mower Blades Replacement for Cub Cadet 42 inch XT1 LT42 Craftsman T110 Troy Bilt Pony LTX1040 942-04308-X 942-04312 with 6 Point Star Hole/High Lift Mulching 2 Pack

What It Is

This is a set of two high-lift mulching blades designed to replace OEM blades on 42-inch cutting decks from Cub Cadet, Craftsman, and Troy-Bilt. The high-lift design increases airflow for better mulching and bagging performance.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits only 42-inch decks (do not use on 46-inch or 54-inch).
• Blade hole pattern: Requires a 6-point star center hole (common on stamped-steel spindles). If your spindle uses a round hole or diamond pattern, these won’t fit.
• OEM replacements: Directly replaces Cub Cadet 942-04308, 942-04308A, 942-04312, and Craftsman/Troy-Bilt equivalents. Cross-check your model number against the list in the title.
• Measure your blade: Confirm length is 21.25 inches, center hole is star-shaped, and thickness is roughly 0.17 inches.

Key Things to Know

• High-lift vs. standard: These blades create more suction, improving mulching and bagging but may reduce engine RPM on thick grass. Not ideal for low-horsepower mowers.
• Installation: Straightforward – remove the old blade, clean the spindle, and torque the bolt to 70–90 ft-lbs. Use a blade removal tool to prevent spinning.
• Sharpness out of box: Lightly sharpened; expect better performance after a few cuts. Resharpen after 25 hours of use.
• Common gotcha: The star hole may be slightly tight on some spindles. Sand the hole edges lightly if needed – do not force it.

Should You Buy It

If you own a 42-inch Cub Cadet XT1, Craftsman T110, or Troy-Bilt Pony and need reliable mulching blades that bag well, this is a solid, affordable choice. Avoid if your deck uses round-hole blades or if you primarily side-discharge on tough terrain.