What do differentials and parts consist of?

Differentials and parts are a set of drivetrain components mounted on the drive axle or in an AWD system. A typical set includes a housing, ring gear, pinion shaft, spider gears, side gears, bearings, and seals. Depending on the car's design, flanges, a speed sensor, and mounting elements are also included. Compatibility is primarily determined by the OEM number, gear ratio, and housing type.

What are differentials and parts used for?

Differentials are used to distribute torque to wheels on the same axle while maintaining a difference in their speed during a turn. This allows the drivetrain to operate smoothly, and tires and half-shafts are not excessively stressed in corners. A functional differential also affects traction, stability, and drivetrain performance. In AWD cars, it additionally cooperates with elements distributing power between axles.

What is the construction and function of differential bearings?

Differential bearings are rolling elements supporting the pinion shaft and the differential carrier. Their task is to maintain the alignment of the gear operation, reduce friction, and transfer loads generated during acceleration and engine braking. Worn bearings can cause whining, play, and an incorrect tooth contact pattern. When selecting, check the seat dimensions, bearing type, and compatibility with the given housing.

How to choose a differential for a specific car version?

It is safest to compare the OEM number, gear ratio designation, drive type, and body/engine version. It is also worth checking the flange diameter, shaft mounting method, presence of a sensor, and housing type. For 4x4 vehicles, compatibility with other drivetrain elements is also important.

What symptoms may indicate wear of the differential or its parts?

The most common symptoms are whining that increases with speed, vibrations during acceleration, clunking when changing loads, and oil leaks around the seals. In practice, it is also worth paying attention to excessive play on the flanges and uneven drivetrain operation in corners. Such signals do not always mean the entire unit is damaged, but they require verification of bearings, gears, and mounts.

How to take care of differentials after installation?

The basis is checking the level and quality of gear oil and regularly checking the housing for leaks. After installation, it is worth observing whether there is any noise, play, or weeping at the seals. It is also good practice to verify cooperating elements such as half-shafts, the drive shaft, and mounts so that the entire system operates without excessive loads.

Differentials and parts

At Global Parts, we offer a wide selection of genuine used car parts, including differentials and parts for many popular car brands, including BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each differential and part we offer undergoes quality control to ensure you receive a top-quality product.

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Mercedes Sprinter W903 Rear Differential Diff A0003500400 741408 34:7

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BMW F20 F21 F30 F31 F32 F34 Rear Differential Diff 3,15 Ratio 7603748 WARRANTY

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Mercedes Sprinter W906 Rear Differential Diff 48:11 4,363 A9063501104 WARRANTY

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

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BMW 5 Series E60 LCI Rear Differential Diff 3,15 Ratio 525i N53 7563457 WARRANTY

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Mercedes ML W164 Front Axle Differential Diff 3,09 Ratio A1643302002 WARRANTY

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Audi Q5 8R 3.0 TDI Quattro Rear Differential Diff 42:9 LAW 0BC500043Q WARRANTY

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BMW E60 520i M54 Rear Axle Differential Diff 3,38 Ratio 7527096 WARRANTY

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Mercedes Vito W639 Rear Differential Diff Axle 3,273 Ratio A6393503214 WARRANTY

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BMW 3 Series E46 Rear Differential Diff 7518806 1428129 3,07 Ratio WARRANTY

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