942-04125 & 942-04124 Lawn Mower Blade Kit, Compatible with Cub Cad et/MTD/Troy Bilt 46" Deck, Replacement Blades Fit for LT1045 LT1046 i1046 Mower, Replace 742-04124 742-04125 742-0612, 3 Blades

What It Is

This is a 3-blade replacement kit for 46-inch cutting decks, designed for Cub Cadet, MTD, and Troy-Bilt lawn tractors. It’s made for mid-duty residential mowing—mulching, bagging, or side-discharge—on a 46" deck.

Fitment & Compatibility

Critical checks before buying:

• Deck size must be exactly 46 inches (measure deck width, not mower model). This kit will not fit 42" or 50" decks.
• Cross-reference your OEM part numbers: 742-04124, 742-04125, or 742-0612. These replace the original Cub Cadet/MTD blades.
• Common compatible models include LT1045, LT1046, i1046, and many other 46" deck tractors from Cub Cadet, MTD, Troy-Bilt, Yard-Man, and Huskee. Double-check your mower’s model/serial tag.
• Physical specs: Each blade is about 16.5 inches long, with a 5-point star center hole and 0.25" pin hole. Ensure your spindle matches the star pattern (most MTD/Cub spindles do).

Key Things to Know

• Quality vs OEM: These are aftermarket blades (likely hardened steel) at a fraction of OEM cost. Expect good cut quality but potentially shorter edge life than factory blades.
• Installation difficulty: Easy—just lift the deck, remove the center bolt (left-hand thread on some models), swap blades, and torque to 40-50 ft-lbs. A blade removal tool helps.
• Common gotcha: The blade orientation matters—the lift wing (curved edge) must face upward toward the deck. Installing upside down ruins cut and can damage the spindle.
• Sharpness out of box: They’re sharp enough for grass but may need a quick file touch-up for best performance. Not for rocks or heavy debris.

Should You Buy It

Buy this kit if you own a 46" Cub Cadet/MTD/Troy-Bilt tractor and want a budget-friendly blade replacement for regular grass cutting. It’s a solid value for the price, but if you mow tough terrain or demand OEM-grade longevity, stick with factory blades.