Prothane 6-605-BL Black Polyurethane Axle Pivot Bushing Kit Ford Cast Axle

The Prothane 6-605-BL is a black polyurethane axle pivot bushing kit designed as a direct-fit upgrade over worn factory rubber bushings on Ford trucks with cast axle I-beam front suspension. These polyurethane bushings restore proper suspension geometry and help keep the front end tracking straight and true.

Key Features:

• Polyurethane construction — resists deterioration far longer than OEM rubber bushings, delivering extended service life
• Direct replacement fitment — designed to drop in where stock cast axle pivot bushings are located on Ford I-beam front axles
• Reduced deflection — stiffer urethane material minimizes suspension flex, improving handling and alignment stability
• Dual-purpose durability — compliant enough for daily street driving yet tough enough to withstand off-road use
• Black finish — color-matched black urethane (BL suffix); also available in red (6-605)
• Kit includes 2 pieces — complete set for a full axle pivot bushing replacement
• Grease included — kit ships with pre-lube; bushings must be lubricated with PTFE grease (marine grease) at installation to prevent squeaking and ensure long service life

Heavy-duty Ford I-beam front axles place significant stress on the factory rubber axle pivot bushings, causing them to deteriorate prematurely and leading to alignment problems and uneven tire wear. Replacing them with Prothane's specially formulated polyurethane bushings restores suspension control and extends the service interval well beyond what stock rubber can deliver. Proper application of the included PTFE grease at installation is essential for quiet, long-lasting performance.