GKN Loebro 306421 CV Joint Boot Kit - Front Outer

GKN Loebro 306421 CV Joint Boot Kit

GKN Loebro 306421 is an OE-quality CV joint boot kit built for the front outer position on select Saab 9-3 applications. It uses a solid TPE boot to match the thermal and material requirements of modern driveline joints, helping protect the CV joint from contamination and heat-related wear.

• OE-quality TPE thermoplastic elastomer boot
• Solid black boot design
• Joint end inside diameter: 3.562 in.
• Shaft end inside diameter: 1.437 in.
• Rib quantity: 1
• Vented boot: No
• Fits front outer CV joint applications on Saab 9-3

Fitment Details

Compatible with 2003-2011 Saab 9-3, front outer. Fits 2003-2005 Saab 9-3, front outer; 2006-2007 Saab 9-3, front outer; 2008-2009 Saab 9-3, front outer; 2010 Saab 9-3, front outer; and 2011 Saab 9-3, front outer. This part number, 306421, also cross-references 1603293 and 12793854 for the same application.

What It Helps Repair

• Torn CV boots that expose the joint to dirt and moisture
• Slipped boots that no longer seal the axle properly
• Porous or heat-aged boots that allow grease loss
• Noise and vibration caused by contaminated CV joint components
• Wear on the front outer CV joint from failed boot protection

Installation Notes

Match the replacement boot to the original joint design and dimensions before installation. GKN notes that exact fit is critical, especially when replacing an original TPE boot. Inspect the joint for contamination or damage before fitting the new boot, and follow standard driveline service procedures for cleaning, greasing, and securing the boot in place.

Quality Assurance

GKN Automotive supplies OE-level driveline components and designs these boot kits to meet the material and fit requirements used on original equipment applications. The 306421 boot kit is intended for professional repair work on Saab 9-3 front outer CV joints.