Aftermarket 311-501-221 Rear Axle Castle Nut M24 x 1.5 Thread 36mm

The Aftermarket 311-501-221 is a slotted rear axle castle nut designed as a direct replacement for the original Volkswagen part number 311-501-221. This critical fastener secures the rear axle to the brake drum or rotor, preventing it from loosening during operation.

Key Specifications:

• Thread Size: M24 x 1.5
• Wrench Size: 36mm socket required for installation
• Design: Slotted castle nut with flanged shoulder design
• Material: Forged steel construction for strength and durability
• Includes slots for cotter pin installation (cotter pin sold separately)

Features and Benefits:

• Direct replacement for OEM part number 311-501-221
• Flanged design provides extra strength and secure mounting
• Slotted castle design allows proper cotter pin safety retention
• Must be torqued to proper specifications to prevent brake drum loosening
• Essential component for safe rear axle and brake assembly

This rear axle nut is compatible with various Volkswagen air-cooled models including Type 1 (Beetle), Type 3 (Fastback/Squareback), Karmann Ghia, Thing, and Bus applications. Proper installation requires a 36mm socket and torquing to manufacturer specifications for safe operation.