Stens 532421176 Lawn Mower Blade Adapter with Pulley

The Stens 532421176 is a replacement blade adapter with integrated pulley designed for walk-behind lawn mowers. This critical component attaches the mower blade to the engine crankshaft while also serving as the drive pulley for self-propelled models.

Key Features:

• Direct replacement for OEM part numbers 421176, 189179, 532189179, and 532085543
• Compatible with Husqvarna, Craftsman, Poulan, Poulan Pro, AYP, Roper, and Weed Eater lawn mowers
• Integrated pulley design for self-propelled drive systems
• 25mm (1 inch) crankshaft diameter fitment
• Durable metal construction for long service life

This blade adapter is commonly replaced when worn, damaged, or when the blade becomes loose or unbalanced. Installation requires removing the blade bolt, old adapter, and belt (on self-propelled models), then installing the new adapter onto the clean engine shaft. Proper torque specification is approximately 35 ft-lbs for the blade mounting bolt.

Note: Some installations may require minor modification to the plastic belt guard for proper clearance. Always consult your equipment's owner manual for proper part identification and installation procedures.