352 131 25 33 Mercedes-Benz Compatible Connecting Rod Bearing

What does a connecting rod bearing do?

The compressor connecting rod bearing plays a critical role in the internal mechanism of an air brake compressor by carrying the rotating motion between the crankshaft and the connecting rod.

Compatibility with Mercedes-Benz vehicles

Designed for heavy commercial vehicle applications, this component is essential for Mercedes-Benz air brake compressors. It absorbs the friction and load generated during the compression stroke, ensuring the piston moves smoothly to maintain steady air supply. When these bearings wear, the compressor may exhibit knocking noises or irregular air pressure generation.

Installation and maintenance guidance

For optimal performance, technicians should inspect these bearings during compressor overhauls. It is often replaced alongside the piston and ring set to ensure long-term reliability. Proper installation ensures the crankshaft rotation remains stable under high-pressure operating conditions.

Troubleshooting compressor performance

If a decrease in air pressure or increased vibration is detected in the braking system, checking the internal compressor components is recommended to prevent further mechanical damage.

OE cross-reference

7400 940 001 (Compressor Connecting Rod Bearing) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 3521312533.