Mercedes W447 119 CDI Rear Axle Differential Diff I=2,93 A4473500814 WARRANTY

Description

Listing details

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

Mercedes W447 119 CDI Rear Axle Differential Diff I=2,93 is a factory-original drivetrain component designed for the rear axle of Mercedes vehicles equipped with a diesel engine and an automatic transmission. It is responsible for the proper distribution of torque to the rear wheels, ensuring stable handling, predictable vehicle behavior, and correct interaction with the drivetrain electronics.

Specifications and technical data

• SKU: A4473500814
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4473500814
• Substitutable numbers: A4473500814, A 447 350 08 14
• Location on the vehicle: Rear
• Fuel type: Diesel
• Gearbox type: Automatic
• Part type: Differential & Housing Assembly
• Category: Differentials

Purpose and technical specifications

The presented differential is designed for installation on the rear axle of W447 family models with the 119 CDI diesel unit and an automatic transmission. The I=2.93 gear ratio is selected for flexibility across the full load range – from city driving and touring to highway conditions, where stability at higher speeds and reasonable fuel consumption are essential.

A differential with this gear ratio supports smooth acceleration, reduces excessive stress on drivetrain components, and allows for consistent operation of driver assistance systems, such as traction control or electronic stability control. This is particularly important in commercial and passenger-delivery vehicles, where the vehicle often operates under variable loads.

Compatibility with diesel engines and automatic transmissions

The differential has been configured to work with a diesel engine that generates high torque at low RPM. As a result, the drivetrain is better adapted to the characteristics of the 119 CDI unit, which translates into more predictable acceleration and a lower risk of wheel slip during sudden acceleration.

In combination with an automatic transmission, a properly selected rear differential ratio contributes to:

• smooth gear shifts and reduced jerking,
• maintaining optimal engine RPM at typical cruising speeds,
• stable vehicle behavior during acceleration and engine braking.

Benefits of using an original rear differential

Using an original rear differential in a W447 119 CDI vehicle allows for the maintenance of factory drivetrain performance parameters. The precise gear geometry and fitment to the rear axle minimize the risk of noise, vibrations, and uneven tire wear. This solution is particularly beneficial for users who expect predictable vehicle behavior in daily operation.

This component from the Differentials category is crucial for the durability of the entire drivetrain – a correctly selected differential reduces stress on half-shafts, bearings, and the automatic transmission, which can reduce maintenance costs in the long run.

Condition, installation, and practical application

The offered differential is a used part, which allows for an economical repair or replacement of a damaged component while maintaining compliance with factory specifications. It is a good solution both in the event of a drivetrain failure and when it is necessary to match the rear axle ratio to a specific vehicle configuration.

Before installation, a standard workshop procedure is recommended: checking for leaks, verifying operating clearances, and changing the transmission oil to the specification recommended by the vehicle manufacturer. A correctly installed differential ensures stable rear axle operation, which is especially important in vehicles used intensively – e.g., in passenger or delivery transport.

Gear ratio selection and technical knowledge

If you want to better understand how the I=2.93 gear ratio affects driving characteristics, fuel consumption, and drivetrain load, it is worth consulting specialized resources. A practical discussion on selecting a drive axle and differential for your driving style, along with examples and FAQs, can be found in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style.

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 drive axles, final drives, or other differentials, check the available parts in the Mercedes Differentials category.