Fismiuta 42-inch 6-Star Mulching Mower Blades for Cub Cadet & Troy-Bilt — 40MnB Boron Steel, Heat-Treated

Fismiuta 42" 6-star mulching blades (model 942-04308 / 742-04312 compatible) are heavy-duty replacement blades engineered to fit 42-inch Cub Cadet, Troy-Bilt and Craftsman riding mowers with a 6-point star center hole.

These blades are built from industrial 40MnB boron steel, fully heat-treated and powder-coated to improve impact resistance, rust protection, and edge retention. They’re designed for medium-lift airflow that produces a consistent cut and effective mulching, bagging, or side discharge on 42" decks. Before ordering, check your mower’s SKU or existing blade part number to confirm the 6-point star center matches your machine.

Will these blades fit my Cub Cadet XT1-42, LT42 or similar 42" mower?

Yes, these blades are made to replace many common OEM numbers for 42" decks that use a 6-star center hole. Compatibility covers several Cub Cadet, Troy-Bilt and Craftsman models listed by OEM part numbers.

• Compatible OEM references: 742-04308, 742-04308A, 942-04308, 942-04308A, 742-04312, 942-04312 and related part numbers.
• Fits 42" cutting decks that use the 6-point star center mounting pattern.
• Confirm your mower’s blade SKU or remove an old blade to match the center hole style before purchase.

How do these blades improve cutting and mulching performance?

The blades feature a medium-lift aerodynamic profile that creates strong airflow beneath the deck, standing grass upright for a precise, single-pass cut. That same airflow helps finely recut clippings for better mulching and fills the bag efficiently when bagging.

• Medium-lift design produces a vacuum vortex for cleaner shearing and improved mulching.
• Sharper edge geometry reduces tearing and promotes healthier-looking grass.
• Improved bag fill rates, even in denser or slightly damp conditions.

Are these blades durable enough for rough yards with hidden rocks or roots?

Fismiuta blades are forged from 40MnB boron steel and undergo full-body heat treatment to raise toughness and impact resistance. They are designed to resist common failures like snapping on impact, which helps protect both the blade and the mower’s spindle.

• Industrial-grade boron steel construction for higher toughness.
• 35% greater impact resistance compared with many basic carbon-steel replacements.
• Digital dynamic balancing minimizes vibration and reduces stress on the mower.

What maintenance and longevity benefits do these blades offer?

These blades are finished with a heavy-duty powder coat that reduces corrosion and wear from wet grass, debris, and UV exposure. The edge profile is engineered for longer sharpness retention, so you sharpen less frequently and maintain a healthy cut.

• Powder coating provides extended rust resistance and abrasion protection.
• Superior edge retention means fewer resharpening cycles over a season.
• Balanced blades reduce vibration, protecting the mower’s motor and bearings.

Who is this for? These Fismiuta 42" 6-star blades suit homeowners and landscapers who need a rugged, OEM-compatible replacement for Cub Cadet, Troy-Bilt, and Craftsman 42" riding mowers. They’re ideal if you want improved mulching, cleaner cuts in a single pass, reduced vibration, and greater resistance to impacts from stones or roots. Verify the 6-point star center hole and matching OEM numbers on your mower before ordering to ensure proper fit and performance.