Prothane 7-1148-BL Front Sway Bar Bushing Kit 26mm Black Polyurethane

The Prothane 7-1148-BL is a front stabilizer bar bushing kit designed to replace deteriorating OEM rubber bushings with high-performance black polyurethane. Upgrading to polyurethane bushings significantly reduces body roll and improves handling precision by holding the sway bar firmly in place — resisting the flex and deformation that cause stock rubber bushings to lose their grip over time.

Unlike factory rubber, Prothane's polyurethane material does not break down from road grime, moisture, or petroleum-based fluids. These bushings maintain their shape and clamping force across the full life of the vehicle, delivering consistent performance whether used for daily driving or spirited performance applications.

Key Features:

• 26mm bore diameter — precision-fit for the OEM front stabilizer bar
• Grooved inner bore designed to retain Prothane Super Grease for quiet, squeak-free operation
• Black polyurethane construction with graphite content to further aid noise reduction
• Firmer than OEM rubber for improved steering response and reduced body roll
• Resistant to oils, road grime, and weathering
• Also compatible with larger-diameter high-performance aftermarket sway bars
• Sold as a kit — includes bushings and Prothane Super Grease lubricant
• Made in the USA
• Lifetime Warranty against defects in materials and workmanship for the original purchaser

Installation requires proper lubrication of the bushing bore using the included Prothane Super Grease. Adequate greasing at installation is the most effective way to ensure quiet, long-lasting operation. This kit is the black (-BL) variant; a red version is also available under a separate part number.