BMW 3 5 6 Series E60 E63 E90 E92 M3 M5 M6 Engine Split Conrod Connecting Rod

BMW 3 5 6 Series E60 E63 E90 E92 M3 M5 M6 Engine Split Conrod Connecting Rod from the BMW Crankshafts range is an original crankshaft assembly component, designed for precise interaction with the crankshaft in BMW power units. This used OEM component ensures factory geometry, proper balancing, and maintenance of engine operating parameters in accordance with the manufacturer's specifications.

Specifications and technical data

• SKU: 7838623
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7838623
• Substitutable numbers: 11247838623, 7838623, KZ
• Category: Crankshafts

Purpose and function in the BMW engine

The presented connecting rod is a component of the crankshaft system used in BMW 3, 5, and 6 Series models, as well as M3, M5, and M6 versions, where precise transfer of forces from the piston to the crankshaft is critical. The split conrod design allows for precise installation on the crankshaft journal, which translates into stable engine operation across the entire RPM range.

By maintaining factory dimensional tolerances and appropriate rigidity, this connecting rod supports proper bearing lubrication, reduces unwanted vibrations, and helps maintain the correct engine operating culture, which is particularly important in the more powerful M variants.

Construction and technical features of the connecting rod

The connecting rod from this group is designed as a high fatigue-resistance component, adapted to operate in engines under high mechanical and thermal loads. The split big end facilitates installation and removal on the crankshaft while maintaining adequate rigidity after tightening.

Original manufacturing ensures:

• correct coaxiality of the piston pin and crankshaft journal,
• stable piston guidance in the cylinder,
• the ability to maintain proper assembly clearances in the crankshaft system,
• compatibility with factory BMW bearings and crankshafts.

As a result, the connecting rod can be used both in standard operation and in units subjected to higher loads, provided that the other system components are selected in accordance with the manufacturer's recommendations.

Application in BMW 3, 5, 6 Series and M models

This crankshaft system component is used in engines installed in BMW 3, 5, and 6 Series, as well as in the sports M3, M5, and M6 variants, where high repeatability of operating parameters is required. Replacing the connecting rod is particularly important during engine overhauls following seizure, bearing damage, or when rebuilding engines operated under high-load conditions.

A properly selected, original connecting rod allows for the restoration of the correct crankshaft system geometry, which has a direct impact on:

• even load distribution on the crankshaft,
• reducing the risk of recurring bearing damage,
• maintaining proper oil pressure at critical lubrication points.

Component condition and benefits of using used parts

The offered connecting rod comes from the used BMW OEM components group, which means it retains its factory material and design specifications while allowing for the optimization of engine overhaul costs compared to purchasing a new component. For workshops specializing in the BMW brand and for informed users, this is a reasonable compromise between quality and budget.

Choosing an original, used connecting rod is particularly beneficial in the case of comprehensive repairs of high-power units, where maintaining the consistency of the entire crankshaft system and compliance with factory design assumptions is crucial.

Compatibility within the BMW crankshaft system

The component has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification and selection for a specific power unit. Before installation, it is recommended to verify compatibility with the engine number and compare it with the removed component to ensure full compatibility within the crankshaft, piston, and bearing assembly.

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other elements from the same group, such as connecting rods, crankshafts, or components working with the crankshaft system, check the available parts in the BMW Crankshafts category.

For a comparison of solutions used in other brands and to optimize engine overhaul costs, you can read an article describing the evolution of Volkswagen engines – Volkswagen 1.9 TDI vs 1.4 TSI – evolution of VW engines and repair costs, which shows how the selection of appropriate used components affects durability and operating economy.