BCQNXX mulching mower blades 42-inch replacement 2-pack for Cub Cadet Troy-Bilt MTD Craftsman — hardened steel, 7/8" diamond-hole

BCQNXX 742P05177A-X mulching mower blades are a two-blade replacement set designed to restore clean, consistent cutting on 42-inch decks for select Cub Cadet, Troy-Bilt, MTD and Craftsman machines.

These aftermarket blades are engineered to match the dimensions and hole pattern of the OEM 742P05177A-X (also referenced as 742-05177A-X and several 490-110- series numbers), offering a cost-effective way to refresh worn or damaged cutting edges on 42" zero-turn and garden-tractor decks. Each package contains two blades sized for common 42" decks, made from hardened steel and shaped for mulching performance where clippings are recut and dispersed beneath the deck.

How do these blades compare to the original equipment parts?

The BCQNXX replacements are manufactured to the same critical measurements as the OEM part numbers they substitute, including length, width, thickness and the 7/8" center hole diameter. They use the diamond hole pattern compatible with many S-pattern spindles so fitment is straightforward for the listed models.

• Exact blade dimensions: 21-1/4" long, 2-9/16" wide, 0.135" thick.
• Center hole: 7/8" and diamond-hole layout for spindle compatibility.
• Sold as a 2-pack to refresh both sides of a 42" deck in one purchase.

Will these blades improve mulching and grass discharge?

The blades are shaped to promote mulching by re-cutting clippings multiple times before they drop, which helps produce finer clippings that decompose more quickly into turf. Proper installation and sharp edges are necessary for best results; dull or bent blades reduce performance and can tear instead of cut grass.

• Mulch-style cutting geometry for smaller clippings and even dispersion.
• High-carbon/hardened steel construction holds a cutting edge longer.
• Replace worn blades regularly to maintain clean cuts and turf health.

Which machines are compatible with this blade set?

These blades are listed as compatible with numerous Cub Cadet, Troy-Bilt, MTD and Craftsman models that use a 42" deck and the matching hole pattern. Always verify your existing part number or blade dimensions before ordering to ensure a precise fit.

• Cub Cadet: Enduro XT1-LT42, XT1-LT42E, XT2-LX42, Ultima ZT1-42, ZT1-42E, ZTS1-42.
• Troy-Bilt: Mustang Z42.
• Craftsman: models like T2200 and Z5200 with 42" decks.

How should I care for and replace these blades safely?

Inspect blades periodically for nicks, bends or dulling; replace them if they are damaged to avoid uneven cuts or mower damage. Always disconnect spark plug and follow manufacturer torque specs when removing or installing blades, and balance new blades to reduce vibration.

• Check blade balance after installation to prevent vibration.
• Sharpen or replace blades when cutting performance declines.
• Use proper personal protective equipment and secure the mower before work.

Who is this for: homeowners and landscapers with 42"-deck Cub Cadet, Troy-Bilt, MTD or Craftsman mowers seeking a reliable, budget-friendly replacement for OEM part numbers such as 742P05177A-X and 742-05177A-X. This 2-pack suits users who want to restore mulching performance and keep mowing operations efficient without buying brand-name originals—provided they confirm fit with their deck and spindle pattern before purchase.