8TEN LawnRAZOR Blade for Cub Cadet Craftsman Troy Bilt CC30E E150 TB30E XP 30-Inch Deck 742-05478 942-05478 Mulching

What It Is

The 8TEN LawnRAZOR Blade is a replacement mulching blade designed for 30-inch cutting decks on select Cub Cadet, Craftsman, and Troy-Bilt walk-behind mowers. It’s intended to chop clippings finely for nutrient recycling, reducing bagging needs.

Fitment & Compatibility

Before buying, verify your mower has a 30-inch deck (measure from outer blade tip to tip—must be exactly 30 inches). This blade replaces OEM part numbers 742-05478 and 942-05478. Compatible models include Cub Cadet CC30E, E150, TB30E, and Craftsman XP 30-inch. Check your mower’s model number (on a sticker under the seat or near the engine) against the manufacturer’s parts list. The blade has a center hole diameter of 1 inch and a 3/4-inch offset—measure your old blade’s length, hole, and offset to confirm. It’s an aftermarket part, not OEM, so fit is tested but not guaranteed for every variant (e.g., some older Craftsman models may differ).

Key Things to Know

• Quality: Made from heat-treated alloy steel; holds an edge decently but may dull faster than OEM blades in sandy or rocky soil.
• Installation: Moderate difficulty—requires a socket wrench and blade removal tool (or block of wood to prevent spinning). Torque bolts to 35-45 ft-lbs.
• Gotchas: Mulching performance improves with sharp blades; consider sharpening every 10-15 hours for best results. The 8TEN blade is slightly lighter than some OEM blades, which may affect balance—always check with a blade balancer after install.
• Warranty: Limited—check seller’s return policy for fitment issues; no universal guarantee.

Should You Buy It

This blade is a solid budget-friendly option if your 30-inch Cub Cadet, Craftsman, or Troy-Bilt mower is used for regular mulching on average lawns. It’s not ideal for heavy-duty commercial use or fine turf where OEM precision matters—stick with OEM for those. For most homeowners, it offers reliable performance at a lower price point.