GKN Loebro 300506 CV Joint Boot Kit - Rear Left Inner or Rear Right Inner

OE-Quality CV Boot Kit for BMW Axles

GKN Loebro 300506 is a premium OE-quality CV joint boot kit built for precise driveline service. It is designed for the rear inner CV joint on select BMW Z3 and BMW 325i/325is applications, where exact boot fit and correct material are critical to protecting the joint from contamination and grease loss.

For BMW Z3 rear inner CV boot replacement or BMW 325i rear inner CV boot service, this GKN Loebro 300506 kit follows the original-style fit and material requirements used on the vehicle.

Key Features

• OE-quality CV joint boot kit from GKN Loebro
• Rubber boot construction with a solid, black design
• Joint end inside diameter: 3.937 in.
• Shaft end inside diameter: 0.905 in.
• Single-rib boot profile
• Non-vented boot design
• Engineered for rear right inner and rear left inner positions
• Part number 300506 for catalog and service identification

Detailed Description

GKN Loebro 300506 is a CV joint boot kit for driveline repair where the original boot has torn, slipped, or deteriorated. The boot is the barrier that keeps grease in the joint and road debris out, so correct sizing and material selection matter. This kit is intended for applications that require a rubber, solid boot with the listed diameters and rib configuration, helping maintain the original joint protection on BMW driveline assemblies.

This part cross-references BMW OE numbers 33 21 1 226 264 and 33 21 9 067 814 for the same application. Use part number 300506 when matching the correct replacement for the specified rear inner positions on BMW Z3 and BMW 325i/325is vehicles.

What It Helps Address

• Torn CV boot causing grease leakage
• Slipped boot that no longer seals the joint
• Contamination entering the CV joint
• Noise or vibration related to boot failure and joint wear
• Need for an exact-fit rear inner BMW CV boot replacement

Installation Notes and Tips

Confirm the joint end and shaft end diameters before installation, and match the boot material to the original driveshaft specification. GKN notes that TPE-equipped shafts require the matching TPE replacement boot kit, so verify the original boot material before ordering. Clean the joint thoroughly before reassembly and inspect the CV joint for wear or damage before installing the new boot.

Compatible With 1997-2002 BMW Z3, rear right inner and rear left inner; 1995 BMW 325i, rear right inner and rear left inner; 1995 BMW 325is, rear right inner and rear left inner.

Quality Assurance

GKN Loebro supplies OE-quality driveline components through GKN Automotive, a global leader in drive systems. Part number 300506 is built to the dimensional and material requirements needed for professional CV boot repair on the listed BMW applications.