GKN Loebro 306621 CV Joint Boot Kit - Front Outer or Front Right Outer

Overview

GKN Loebro 306621 is a standard replacement CV joint boot kit built for exact fit and reliable joint protection. It is engineered with TPE material and solid boot construction to match the original application requirements on select BMW driveline assemblies.

Fits 2022-2025 BMW M3, front right outer; fits 2022-2025 BMW M4, front right outer; fits 2019-2025 BMW M850i xDrive, front right outer; and additional BMW applications listed below. This part cross-references Dynomax 36442 for the same application.

Key Features

• Standard replacement CV joint boot kit for driveline repair
• TPE boot material for application-specific fit and durability
• Solid boot design with black finish
• Includes grease for service preparation
• Built with a 123 mm length, 3.425 in. joint end ID, and 1.023 in. shaft end ID
• GKN Loebro part number 306621

Product Details

GKN Loebro 306621 is intended for BMW front outer CV joint service where the original boot has torn, slipped, or become porous. The boot kit is matched to the joint design, and the TPE construction is important when the original driveshaft uses a TPE boot. For BMW driveline repairs, correct material selection and exact fit are critical to protecting the joint from contamination and premature wear. The kit includes the service components needed for professional repair work, and the black solid boot design supports a clean OE-style replacement. GKN Loebro 306621 is listed across a wide range of BMW models, including 5 Series, 7 Series, 8 Series, M models, and Alpina applications.

Common Repair Uses

• Restores protection after a torn CV boot
• Addresses grease loss from a slipped boot
• Helps prevent contamination from a porous boot
• Supports repair of worn outer CV joint service points
• Replaces a damaged boot on BMW xDrive driveline assemblies

Installation Notes

Verify the joint end and shaft end dimensions before installation, and confirm the vehicle uses the TPE boot specification. This kit is listed for front right outer and front outer positions only, depending on application. Follow the vehicle service procedure for CV joint cleaning, boot placement, and clamp tension to ensure proper sealing.

Quality Assurance

GKN Loebro is part of GKN Automotive, a global drive systems supplier with OE-quality boot kit engineering. The brand emphasizes exact fit and correct material selection for reliable joint protection in driveline service.