Description
Product Overview
Part Name: Rear Differential Transfer Case Assembly
Part Numbers: 0CQ525010S / 0CQ907554D / AP0155
Vehicle Compatibility: Audi A3, S3 & Q2 Cars (2015–2020) with Quattro/all-wheel-drive systems using a 0CQ-series rear differential carrier and matching Haldex control unit.
Configuration: Complete rear differential transfer case assembly designed as a direct-fit replacement, with integrated housing, gears and electronic control interface for compatible Audi AWD applications.
Function: Transfers torque to the rear axle and manages torque distribution in the AWD system to maintain traction, reduce wheel slip and support stable handling under varying road conditions.
Technical Specifications
Type: Rear Differential Transfer Case Assembly (AWD / Quattro)
Material: Differential housing with internal gearsets, bearings and electronic interface (construction varies by manufacturer)
Application: Direct-fit replacement for Audi A3, S3 & Q2 Cars (2015–2020) where 0CQ525010S and 0CQ907554D/AP0155 are specified on the original rear differential module.
Cross-Reference: 0CQ525010S / 0CQ907554D / AP0155
Installation: Installs in place of the existing rear differential transfer case; professional installation recommended for correct mounting, fluid fill and AWD system calibration.
Service Interval: Replace during AWD/drivetrain repair when symptoms appear (noise, vibration, leaks, warning lights or loss of rear drive).
Delivery & Availability
Stock Options: Available
Delivery Time: 3–7 days internationally
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