Fitment:
Differential assembly compatible with CLA/W117 CLA 250
Differential assembly compatible with CLA/W117 CLA 220
Differential assembly compatible with CLA/W117 CLA 45
Differential assembly compatible with GLA/W156 GLA 200
Differential assembly compatible with GLA/W156 GLA 220
Differential assembly compatible with A/W176 A 200
Differential assembly compatible with A/W176 A 250
Differential assembly compatible with A/W176 A 45
Differential assembly compatible with B/W246 B 220
Differential assembly compatible with B/W246 B 250
Differential assembly compatible with B/W246 GLA 250 2.0L L4 2014-2020
Differential assembly compatible with B/W246 GLA 45 2.0L L4 2014-2020
Differential assembly compatible with B/W246 A 45 2013-2018

Symptoms Indicating Replacement Need:
Persistent Noise: A constant whining, howling, or grinding noise from the rear axle, especially during cornering or acceleration
Major Fluid Leak: Significant gear oil seepage from the housing seams or axle seals that cannot be resolved by seal replacement alone
Vibration and Driveability Issues: Resonant vibrations at certain speeds or a feeling of binding in the rear drive
When these symptoms appear, replacing the entire unit with an new assembly is often more efficient and reliable than attempting to repair individual internal gears

Product Features:
Complete Unit Design: Provides a fully assembled drive unit, greatly simplifying the repair process and reducing the risk of secondary failures due to improper component matching
Pre-adjusted & Tested: Critical parameters like gear backlash are pre-set at the factory, ensuring proper meshing and smooth driver