Stens 350-149 AYP 421825 Medium-Lift Blade,Black

What It Is

The Stens 350-149 is a medium-lift replacement blade designed primarily for AYP (American Yard Products) and Electrolux lawn tractors, matching OEM part 421825. It’s suited for mulching and bagging on residential mowers with 42-inch cutting decks.

Fitment & Compatibility

Before buying, verify three things:

• Deck size: This blade fits 42-inch decks only. Measure your deck’s cutting width; it won’t work on 36-inch or 48-inch decks.
• OEM cross-reference: Confirmed fits AYP/Electrolux models using OEM 421825, 138416, or 144141. Also works with Craftsman, Husqvarna, Poulan, and Murray tractors from the 2000s–2010s. Check your owner’s manual or current blade part number.
• Measurements: Blade length is 20.5 inches, center hole is 5/8-inch diameter, and thickness is 0.1875 inches. Confirm these match your existing blade—especially the hole size and drive pin pattern (some AYP decks use a two-pin star pattern; this blade uses a single oval hole). If your deck has a different mount, it won’t fit.

Key Things to Know

• Quality: Stens is a reputable aftermarket brand. This blade is made from hardened steel and holds an edge well for residential use, but it’s not as thick as OEM heavy-duty options—avoid for rocky or debris-heavy terrain.
• Installation difficulty: Easy if you have a socket wrench and blade removal tool. Torque the blade bolt to 30–40 ft-lbs. Use thread locker if your deck vibrates heavily.
• Common gotcha: The medium-lift design creates decent airflow for bagging but isn’t ideal for high-volume mulching. If you mulch thick clippings, you may need a high-lift blade.
• Balance: After installation, check blade balance with a balancer. Stens blades are usually pre-balanced, but always verify to prevent deck vibration.

Should You Buy It

Buy this blade if you have an AYP-based 42-inch lawn tractor (Craftsman, Husqvarna, Poulan) and need a reliable, affordable replacement for bagging or light mulching. It’s a solid value for regular residential mowing, but skip it if you require heavy-duty mulching or have a non-AYP deck with a different blade mount.