Premium OEM-grade connecting rod for Mercedes-Benz OM642 3.0L & OM651 2.2L diesel engines, engineered to exact OE specifications (A6510300020 / A6420303420). Forged from high-strength alloy steel with precision CNC machining for flawless dimensional accuracy and maximum load-bearing capacity. Features micro-polished bearing surfaces and weight-matched design to reduce vibration in high-RPM applications. Direct replacement part for turbocharged diesel engines in Sprinter/Vito/GLK/ML/GL-Class vehicles. Includes factory-calibrated wrist pin bushings and hardened bolt threads for effortless installation. Bulk purchase available with wholesale pricing for repair shops and fleet maintenance.