Mercedes W204 W212 Rear Differential Diff 2043502104 A2043502104 2,65 WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Mercedes W204 W212 Rear Differential Diff 2043502104 A2043502104 2,65 WARRANTY is an original drivetrain component from the Differentials category, designed for installation on the rear axle. This is a solution for users expecting stable torque transfer, predictable vehicle handling, and compliance with Mercedes factory specifications.

Specifications and technical data

• SKU: A2043500414
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043500414
• Substitutable numbers: A2043500414, A 204 350 04 14, A2043502104, A 204 350 21 04, A2043502404, A 204 350 24 04
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear axle is a drivetrain component responsible for torque distribution between the rear wheels and ensuring the correct final drive ratio. The 2.65 ratio promotes smoother engine operation at higher speeds, which translates into a comfortable, fluid ride and stable vehicle behavior on the road.

Its rear-mounted position means the differential works directly with the rear axle half-shafts, being responsible for:

• efficient power transfer to the rear wheels,
• proper operation of the drivetrain during cornering,
• maintaining the correct acceleration characteristics and engine RPM.

Benefits of using an original Mercedes differential

The original differential dedicated to the W204 and W212 series ensures factory fitment to the suspension design and Mercedes drivetrain. Thanks to this:

• compatibility with factory mounting points is maintained,
• there is no need for structural modifications,
• the drivetrain operates within the parameters intended by the manufacturer.

This solution is particularly beneficial for repairs where consistency of the axle ratio with the installed transmission and vehicle control software is crucial.

Use in service practice

The rear axle with a 2.65 ratio will work well both for standard replacement of a damaged differential and for deliberate modification of drive characteristics towards a calmer, more economical ride. In service practice, this means:

• the ability to restore proper drivetrain operation after a failure,
• reduction of unwanted noises resulting from wear of the old axle,
• maintaining predictable vehicle behavior in various road conditions.

The item from the Differentials category is essential for safety and driving comfort, which is why its selection should be based on compliance with manufacturer markings and gear ratio parameters.

Characteristics of the used product

The offered differential is a used component, which in workshop practice often represents a reasonable compromise between repair costs and maintaining the vehicle's original design. This type of component allows you to:

• lower the cost of restoring drivetrain efficiency,
• maintain the original Mercedes technical specification,
• preserve compatibility with other drivetrain components.

Before installation, standard workshop verification is recommended to confirm tightness, the absence of excessive play, and correct operation of the mechanism throughout the full RPM range.

Gear ratio selection and additional materials

When replacing the rear axle, it is crucial to match the gear ratio to the installed transmission, wheel size, and expected driving style. Proper selection helps avoid problems with electronic system operation and incorrect engine RPM at a given speed.

To better understand the relationship between differential ratio, acceleration characteristics, and driving comfort, it is worth checking out our expert guide: Dismantled drive axles and differentials – how to choose ratios for your driving style. The article discusses definitions, configuration examples, and practical tips on selecting used components.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other components from the same group, such as differential housings, drive shafts, or additional mounting elements, check out the available parts in the Mercedes Differentials category.