Front Differential Carrier Assembly 3.73 Ratio For BMW X3 2011-2017 31507592002

Front Differential Carrier Assembly for BMW X3

This front differential carrier assembly is a 3.73 ratio unit that transfers engine torque to the front wheels on compatible BMW X3 models, cross-referenced to OEM part number 31507592002.

Overview

This front differential carrier assembly is built for BMW X3 2011-2017 models that require a 3.73 ratio front axle drive unit. The carrier assembly houses the ring and pinion gears and delivers power to the front wheels for dependable all-wheel-drive traction. It is intended for drivers replacing a worn, noisy, or damaged front differential on their X3.

Built For Performance

• 3.73 ratio gearing matched to the factory front axle specification
• Assembled carrier with ring and pinion installed for direct replacement
• Reference OEM part number 31507592002 for fitment verification
• Sealed housing helps retain lubricant and keep contaminants out
• Balanced internal components for smooth power delivery
• Built to withstand continuous AWD drivetrain load

Fits These Machines

• for BMW X3 2011
• for BMW X3 2012
• for BMW X3 2013
• for BMW X3 2014
• for BMW X3 2015
• for BMW X3 2016
• for BMW X3 2017

On-The-Job Use

• Front axle differential replacement on all-wheel-drive X3 models
• Restoring front wheel traction when the original carrier fails
• Addressing growling or whining noises coming from the front differential
• Routine drivetrain repair in a shop or home garage

Specs At A Glance

Good To Know

Q: How do I confirm this carrier fits my X3? A: Verify the 3.73 ratio and that your X3 falls within the 2011-2017 range, and check the OEM number 31507592002 against your existing unit. Serial number and drivetrain configuration can affect fit, so confirm before ordering.

Q: Does this come fully assembled? A: The carrier is supplied as an assembled unit with the ring and pinion in place for direct installation. Reuse or replace mounting hardware and fluids as your service procedure requires.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.