Remove and install threaded leaf spring and shackle pin 37121-3420 on Western Star suspensions.

• Manufactured from high-grade steel to prevent the socket from slipping or spinning under extreme loads
• Black oxide oxidize finish for extended durability
• 1/2" Drive

Application

• Commonly found on Western Star suspensions.

WARNING: This product may expose you to chemicals including Nickel, which are known to the State of California to cause cancer, birth defects or other reproductive harm. www.P65Warnings.ca.gov