CUB CADET 942-0616A 2PK 21.23" Mulching Blade RZT42 XT1-LT42 ZT1-42 42" Deck Mowers

What It Is

This is a 2-pack of OEM Cub Cadet 21.23-inch mulching blades (part #942-0616A) designed for 42-inch deck mowers, including the RZT42, XT1-LT42, and ZT1-42 series. These blades are built to cut and recirculate grass clippings into fine mulch for natural lawn feeding.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Must be a 42-inch deck. These blades are sold as a pair for 42” decks (two blades total). They will not fit 46” or 54” decks.
• Model compatibility: Confirmed fit for Cub Cadet RZT42, XT1-LT42, ZT1-42, and many other 42” deck Cub Cadet models. Check your owner’s manual or current blade part number to confirm.
• OEM vs aftermarket: This is genuine Cub Cadet OEM, not an aftermarket blade. OEM ensures exact dimensions, hole pattern, and balance. Aftermarket blades may vary in thickness, hole size, or lift angle.
• Measurements: Blade length is 21.23 inches (center hole to tip). Center hole diameter is typically 7/8” with a 1” center hole on some models—measure your existing blade’s center hole before ordering.

Key Things to Know

• Quality: OEM blades are made from hardened steel with a precision edge. Expect longer life than cheap aftermarket options, but they will dull faster on sandy or rocky soil.
• Installation difficulty: Moderate. You’ll need a socket wrench, torque wrench (recommended torque: 70-90 ft-lbs), and a blade removal tool or block of wood to prevent spinning. Always disconnect the spark plug first.
• Sharpening: These can be sharpened 1-2 times before replacement is needed. Don’t sharpen beyond the original edge profile—it changes balance and mulching performance.
• Common gotcha: The blades must be installed with the lift wing pointing up toward the deck. Wrong orientation will reduce cutting and mulching effectiveness.

Should You Buy It

Buy this if you own a Cub Cadet 42” deck mower and want guaranteed fit, consistent mulching performance, and OEM durability. It’s the right choice for homeowners who value reliability over saving a few dollars on aftermarket blades. Skip it if you’re on a tight budget or need standard (non-mulching) blades for bagging or side discharge.