GKN Loebro 304203 CV Joint Boot Kit

OE-Quality CV Joint Boot Kit

GKN Loebro 304203 is an OE-quality TPE CV joint boot kit built for driveline repairs where exact fit matters. It is designed for Volkswagen and Audi applications that use a solid thermoplastic elastomer boot, helping protect the joint from contamination and heat-related wear.

For vehicles such as the Volkswagen Tiguan, Audi RS3, and Audi A3 Quattro, the correct boot profile is critical. GKN Automotive specifies the right material and dimensions for the joint, making this boot kit a direct-fit service part for the listed positions.

Key Features

• OE-quality replacement boot kit from GKN Loebro
• Thermoplastic elastomer (TPE) construction for heat resistance
• Solid boot design with black finish
• Joint end inside diameter: 3.937 in.
• Shaft end inside diameter: 1.062 in.
• Vented boot: No
• Interchange reference: 1K0498201
• Part number: 304203

Detailed Description

This CV joint boot kit is engineered for driveline and axle service where the original boot has torn, slipped, or become porous. The TPE material is used on many modern driveline assemblies because it handles elevated operating temperatures and torque loads better than conventional boot materials. When the original driveshaft uses a TPE boot, matching the replacement material and fit is important for proper sealing and long-term protection.

Part number 304203 is listed for a wide range of Volkswagen and Audi rear inner, front inner, and rear inner applications, including Volkswagen Tiguan, Volkswagen Golf, Volkswagen Jetta, Audi TT Quattro, Audi TTS Quattro, and Audi A3 Quattro. This part cross-references 1K0498201 for the same application.

What It Helps Fix

• Torn CV boot causing grease loss
• Slipped boot that no longer seals the joint
• Porous boot material allowing contamination into the joint
• Heat-related boot deterioration on high-torque drivetrains
• Noise or vibration caused by a damaged boot and contaminated joint

Installation Notes and Tips

Verify the joint end and shaft end diameters before installation, and confirm the vehicle position exactly matches the listing. This boot kit is intended for specific Audi and Volkswagen driveline configurations, including rear right inner, rear left inner, front right inner, front left inner, rear inner, and front inner applications. Use the vehicle notes carefully on models such as the 2018-2021 Volkswagen Tiguan, 2017-2020 Audi RS3, and 2017-2018 Audi A3 Sportback e-tron.

For best results, inspect the CV joint for wear or contamination before fitting the new boot. If the joint has been exposed to dirt or grease loss for an extended period, replacement of the joint may also be required.

Quality Assurance

GKN Automotive is a global driveline supplier known for OE-level fit and material selection. This boot kit follows the brand’s TPE boot specification for applications that require the correct replacement profile and temperature resistance.