Prothane 4-1006 Polyurethane Leaf Spring Eye Shackle Bushing Kit

The Prothane 4-1006 is a premium polyurethane leaf spring eye and shackle bushing kit designed to replace worn, deteriorated OEM rubber bushings in leaf spring suspensions. In leaf spring-type suspensions, significant forces are concentrated at the pivot points and shackles, making the condition of these bushings critical to suspension performance and vehicle control.

Stock rubber bushings are prone to premature failure from road grime, wear, and heavy load cycling. Once they degrade, the effectiveness of the entire leaf spring assembly is compromised. Prothane's premium-grade polyurethane formula is engineered to withstand these stresses and resist contamination from road debris, delivering long-lasting performance well beyond what OEM rubber can offer.

Key Features:

• Premium-grade polyurethane construction for superior durability over OEM rubber
• Resistant to road grime, oils, and environmental contaminants
• Precision-fabricated sleeves and hardware included for a perfect fit
• Available in red or black — both are the same durometer/hardness
• Black bushings include a small amount of graphite to aid in noise reduction
• Includes Prothane Super Grease for proper installation lubrication
• Lifetime warranty against defects in materials and workmanship for original purchaser

Proper lubrication during installation is essential — apply the included Super Grease thoroughly to each bushing to ensure quiet, squeak-free operation. All precision-fabricated sleeves and related hardware are included to ensure a direct-fit installation.