Prothane 7-213-BL Black Front Control Arm Bushing Kit with Shells 1-3/8 in. OD

The Prothane 7-213-BL is a black polyurethane front control arm bushing kit with shells, designed as a direct performance upgrade over worn or soft factory rubber bushings on 1973–1974 GM vehicles. With a 1-3/8 in. outer diameter, this kit delivers the precise fitment needed to restore and maintain proper front suspension geometry.

Worn rubber control arm bushings allow unwanted flex and movement in the suspension, making it nearly impossible to hold accurate caster and camber alignment settings. Prothane's polyurethane compound resists compression and deflection far better than OEM rubber, providing superior compliance resistance that keeps the control arms properly located under hard cornering, braking, and acceleration loads.

Key Features:

• Polyurethane construction — significantly firmer and more durable than factory rubber
• 1-3/8 in. outer diameter for correct fitment
• Includes metal shells for complete, ready-to-install kit
• Black finish
• Helps maintain accurate alignment settings (caster and camber)
• Improved steering response and handling precision
• Resistant to oil, ozone, and general weathering

Prothane Motion Control is an industry leader in high-performance polyurethane suspension components, engineering bushing kits that deliver measurable handling improvements while maintaining street-friendly durability. The 7-213-BL is a straightforward replacement that restores suspension integrity and keeps your alignment dialed in.