GKN Loebro 306373 CV Axle Assembly - Front Left

OE-Style Front Left CV Axle for Mercedes-Benz

The GKN Loebro 306373 is a front left CV axle assembly built with premium OE technology for precise driveline performance. It is specified for select Mercedes-Benz GLA250, CLA250, CLA45 AMG, B250, and GLA45 AMG applications, with a 542 mm overall length and matched joint dimensions for proper fitment.

Key Features

• Part number: 306373
• Front left CV axle assembly
• Overall length: 542 mm
• Inner joint diameter: 98 mm with 27 splines
• Outer joint diameter: 98 mm with 30 splines
• Thread size: M16x1
• OE-focused driveline engineering from GKN Loebro

Detailed Description

GKN Loebro 306373 is engineered for passenger vehicles that demand accurate axle geometry and consistent torque transfer. As a CV axle assembly, it connects the transmission to the wheel hub while allowing suspension travel and steering movement. The 98 mm inner and outer joint diameters, 27-spline inner joint, 30-spline outer joint, and 542 mm length are important details for matching the correct Mercedes-Benz front left application. This part number 306373 is a direct-fit driveline solution for select Mercedes-Benz models, including GLA250, CLA250, CLA45 AMG, B250, and GLA45 AMG.

GKN Automotive supplies axle assemblies and CV joint solutions across combustion, hybrid, and electric drivetrains, with products tuned for passenger cars, light trucks, sports cars, luxury vehicles, and 4x4s. This part cross-references TrakMotive MB-8046 for the same application.

Vehicle Fitment

• Fits 2020 Mercedes-Benz GLA250, front left. Length 542 mm.
• Fits 2015 Mercedes-Benz GLA250, front left. Length 542 mm.
• Fits 2015-2019 Mercedes-Benz B250, front left.
• Fits 2014-2019 Mercedes-Benz CLA250, front left. Length 542 mm.
• Fits 2014-2019 Mercedes-Benz CLA45 AMG, front left. Length 542 mm.
• Fits 2017-2019 Mercedes-Benz GLA250, front left. Without high ground clearance.
• Fits 2015-2019 Mercedes-Benz GLA45 AMG, front left. Length 542 mm.
• Fits 2016 Mercedes-Benz GLA250, front left. To chassis # J; to chassis # L.
• Fits 2013-2014 Mercedes-Benz B250, front left. Length 542 mm.

Common Problems This Part Addresses

• Clicking or popping noises during turns from a worn CV joint
• Vibration or shudder under acceleration from axle wear
• Grease leakage from a damaged axle boot or joint seal
• Excessive driveline play affecting smooth power delivery
• Noise or binding from a fatigued front left axle assembly

Installation Notes and Tips

Confirm the vehicle’s year, model, chassis breakpoints, and suspension configuration before ordering. This axle is specific to the front left position and the listed 542 mm applications, so verify spline count, joint diameter, and thread size against the original part. For Mercedes-Benz GLA250 and related models, check notes such as “without high ground clearance” and chassis limits on the 2016 application before installation.

Quality Assurance

GKN Loebro is part of GKN Automotive, a global driveline supplier known for OE-focused axle and CV joint engineering. The 306373 reflects that OE technology approach, with components tailored to the demands of modern Mercedes-Benz driveline systems.