8TEN LawnRAZOR Blade Set for MTD Cub Cadet 38 inch Deck 742-0323 742-0473 742-0504 942-0504 942-0474 (Notched High Lift)

What It Is

The 8TEN LawnRAZOR Blade Set is a three-blade aftermarket replacement for 38-inch cutting decks on MTD and Cub Cadet lawn tractors. Designed as notched high-lift blades, they improve grass lift and discharge for better mulching and bagging in dense or damp conditions.

Fitment & Compatibility

• Deck size: Fits only 38-inch (96.5 cm) decks. Measure your deck width to confirm—do not assume from model number alone.
• OEM cross-references: Replaces MTD/Cub Cadet part numbers 742-0323, 742-0473, 742-0504, 942-0504, and 942-0474. Check your current blade’s stamped number for an exact match.
• Brand compatibility: Works with most MTD and Cub Cadet tractors using these OEM blades, including select Craftsman, Troy-Bilt, and Yard Machines models with 38-inch decks. Verify your deck’s spindle pattern (3-hole center mount, 5/8-inch center hole) and blade length (approximately 20 inches each).
• Before buying: Remove one existing blade and measure length, center hole diameter, and thickness. Confirm the notch/high-lift profile matches your deck’s discharge design (side or rear). Notched blades are for improved lift; if your deck uses flat or low-lift blades, these may clog.

Key Things to Know

• Quality: 8TEN blades are heat-treated steel with a powder coating for rust resistance. They’re slightly thicker than some OEM blades, which can affect balance—check with a balancer before installing.
• Installation: Straightforward swap using a 15/16-inch socket and torque wrench (35-40 ft-lbs recommended). Use thread locker on the spindle bolts to prevent loosening.
• Common gotchas: The notched design can create more vibration on older spindles with worn bearings. Also, high-lift blades consume more engine power and may leave uncut strips if the deck isn’t level.
• Sharpening: These are not reversible; sharpen only the cutting edge and replace when nicked or worn beyond 1/8 inch.

Should You Buy It

Buy the 8TEN LawnRAZOR set if you need a budget-friendly, durable upgrade for bagging or mulching on a 38-inch MTD/Cub Cadet deck and you’re comfortable with basic blade balancing. Skip it if your deck uses flat blades or you want OEM fit without any vibration risk—stick with genuine Cub Cadet parts for guaranteed compatibility.