BMW E39 E46 E53 330d 530d 3.0d Diesel M57 Engine Cylinder Head 7788581 7788580

BMW E39 E46 E53 330d 530d 3.0d Diesel M57 Engine Cylinder Head is an original diesel engine cylinder head designed for M57 units in BMW 3.0d models. This component is sourced from a vehicle dismantling process, allowing for an economical yet technically sound repair of the powertrain in 330d and 530d family vehicles, as well as selected X5 E53 versions.

Specifications and technical data

• SKU: 7794920
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7794920
• Substitutable numbers: 11127794920, 7794920, 11127786363 11127788582, 11122248981 11122246876, 7786363 7788582, 2248981 2246876, 7788581 7788580, ŁS
• Fuel type: Diesel
• Category: Cylinder Heads & Valve Covers

Purpose and compatibility with the M57 engine

The presented cylinder head belongs to the Cylinder Heads category and is structurally matched to the M57 inline-six diesel engine used in the BMW 3 Series E39/E46, 5 Series E39, and the E53 SUV with the 3.0d designation. By maintaining the factory geometry of the intake and exhaust ports, as well as the correct positioning of the valve seats, the component ensures the proper operation of the power unit after professional installation.

Technical characteristics and role in the powertrain

The cylinder head in the M57 Diesel unit is responsible for the tightness of the combustion chamber, valve operation, as well as proper cooling and lubrication of the upper part of the engine. As an original BMW part, the offered component maintains:

• factory layout of oil and cooling channels,
• precise valve and seat guidance,
• adequate structural rigidity under the high boost pressure typical for diesel engines.

Such parameters are crucial for repairs following overheating, cracking, or wear of the original cylinder head, where compliance with factory tolerances is required.

Benefits of using an original BMW cylinder head

Using a used, original BMW cylinder head in an M57 engine allows for maintaining the consistency of the entire powertrain. In practice, this means:

• reliable installation compatibility with the engine block, accessories, and timing system,
• preservation of the diesel unit's stock performance parameters,
• the possibility of an economical repair without the need for a costly engine replacement.

For workshops specializing in BMW and private users, this is a solution that allows restoring engine efficiency while maintaining the manufacturer's original specifications.

Condition, verification, and service application

The component is sourced from a dismantled vehicle, which allows for reuse in the engine repair process after prior workshop processing (surfacing, leak testing, potential regeneration of seats and guides – in accordance with the procedure adopted by the given service). This type of cylinder head is particularly useful in situations where the original element has suffered mechanical or thermal damage and is no longer suitable for further operation.

Part selection by numbers and integration with other components

The cylinder head has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification in BMW catalogs and service systems. This allows the workshop to verify compatibility with a specific version of the M57 engine, avoiding problems with fitting accessories, manifolds, or the injection system. This information is particularly important when working with different power variants of 3.0d units.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as complete cylinder heads, components prepared for regeneration, or additional mounting components, check the available parts in the BMW Cylinder Heads category.

For those interested in deepening their knowledge regarding the selection of used turbocharging system components, engine interfaces, and practical aspects of installation, the article Go-Kart Feeling XXL: used N18 turbocharger versus B48 – what to choose for a Mini Cooper S? may be helpful, as it discusses key issues related to choosing OEM components in advanced power units.