942-04308 Mower Blade Replaces for 42" Cut for MTD/Cub Cadet/Troy Bilt 742-04308, 742-04312, 942-04312, 742-0616, 942-0616 RZT-L RZT-S LTX1040 LTX1042, 2 Pack

What It Is

This is a 2-pack of aftermarket 42-inch mower blades designed to replace OEM blades on select MTD, Cub Cadet, and Troy-Bilt zero-turn and lawn tractor models. They are for standard mulching or bagging use on residential 42" cutting decks.

Fitment & Compatibility

• Deck size: Must have a 42-inch cutting deck. Measure your blade length before ordering – these are typically 20.5 inches long, 2.5 inches wide, with a 1-inch center hole and 0.5-inch offset.
• OEM replacements: Fits Cub Cadet 742-04308, 742-04312, 942-04312, 742-0616, 942-0616. Also replaces MTD/Troy-Bilt numbers.
• Common models: Works on RZT-L, RZT-S, LTX1040, LTX1042, and similar 42" MTD-platform tractors. Not for 46" or 50" decks.
• Check your spindle: Ensure your mower uses a single-bolt blade mount (not a star or keyed pattern). Verify blade thickness matches – these are 0.25 inch.

Key Things to Know

• Sharpness out of box: Blades come sharp but may need a quick touch-up for best cut. Some users report they aren’t as sharp as OEM.
• Installation: Easy bolt-on job with a socket wrench. Use a block of wood to prevent blade spin. Torque to 40-50 ft-lbs. Always sharpen new blades before first use.
• Balance: They are balanced from the factory, but double-check with a blade balancer after sharpening. Unbalanced blades cause vibration and spindle wear.
• Durability: Made from hardened steel but thinner than some OEM blades. Expect shorter life in rocky or sandy soil – check for bending after heavy use.

Should You Buy It

Good buy if you own a 42" MTD/Cub Cadet/Troy-Bilt mower and want a budget-friendly 2-pack for regular residential mowing. Not ideal for commercial use or rough terrain where thicker OEM blades last longer. If you need a quick, low-cost replacement for a single season, this works.