942-04308 942-04308-X Mulching Blades Fit for 42'' Mower Deck Troy Bilt Pony Bronco Cub Cadet RZT-L42 XT1 LT42 ZT1 Lawn Mower Replace OEM 942-0616 742-0616 942-04126 742-04126 942-04126-x 4PCS

What It Is

This is a set of four mulching blades designed for 42-inch cutting decks on select Troy-Bilt, Cub Cadet, and Bronco lawn tractors. They replace OEM part numbers 942-0616, 742-0616, 942-04126, 742-04126, and 942-04126-x, and are intended for mulching grass clippings into fine particles that decompose quickly.

Fitment & Compatibility

Before buying, confirm your mower deck measures exactly 42 inches (not 46 or 50). These blades fit Troy-Bilt Pony, Bronco, Cub Cadet RZT-L42, XT1 LT42, ZT1, and similar models with a 42-inch stamped deck. Check your current blade part number—if it matches any of the OEM numbers listed (942-0616, 742-0616, etc.), these are direct replacements. Measure blade length (should be ~21.5 inches center-to-center), width (~2.5 inches), and center hole diameter (~1 inch) to verify. Also ensure your deck uses four blades (some 42-inch decks use two).

Key Things to Know

• Quality: These are aftermarket blades, likely made from hardened steel. At ~$13 per blade, they’re a budget-friendly alternative to OEM, but durability may vary compared to factory parts.
• Installation: Moderate difficulty—you’ll need a socket wrench and jack or ramps to raise the mower. Always disconnect the spark plug and wear gloves.
• Common gotcha: Mulching blades have a curved design; install with the lift wing facing upward toward the deck. Using them for bagging or side discharge will reduce performance.
• Balance check: After installation, spin each blade by hand to ensure it’s not bent or unbalanced. Unbalanced blades cause vibration and premature spindle wear.

Should You Buy It

If you have a compatible 42-inch deck and primarily mulch your grass (not bag or side-discharge), this set offers a solid value—saving ~30-40% vs. OEM blades. The 4.8-star rating suggests good fit and performance for most users, but if you need maximum longevity for heavy commercial use, consider OEM. For residential mulching, this is a practical, cost-effective choice.