BMW E90 E91 LCI F10 F11 Oil Filter Housing Cover Support N57 Diesel 7800066

BMW E90 E91 LCI F10 F11 Oil Filter Housing Cover Support N57 Diesel is an original lubrication system component designed for BMW N57 diesel engines. The robust construction of the housing ensures stable mounting of the oil filter cartridge and proper flow of the lubricating medium, which translates into safe engine operation and reduced risk of leaks. This is a practical solution for users who want to maintain factory lubrication system specifications in their BMW.

Specifications and technical data

• SKU: 7800066-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800066
• Substitutable numbers: 7800066, 11427800066
• Fuel type: Diesel
• Part type: Oil Filter
• Category: Oil Filters

Purpose and role in the lubrication system

The oil filter housing on the N57 diesel engine is responsible for the precise routing of oil between the engine block and the filter cartridge. This component:

• stabilizes the position of the oil filter relative to the oil channels in the block,
• ensures a tight connection with seals and oil lines,
• enables proper oil filtration at the correct pressure,
• reduces the risk of pressure drops and uncontrolled leaks. By maintaining the original geometry of the oil channels, the housing works in harmony with the factory lubrication system, which is particularly important in modern BMW diesel engines.

Compatibility with the N57 Diesel engine

The presented housing has been designed to work with Diesel engines from the N57 family, used in BMW 3 Series E90/E91 LCI and 5 Series F10/F11 models. Proper fitment to the engine architecture allows for:

• maintaining the factory oil channel routing,
• correct positioning of sensors and connections (if present in the specific configuration),
• trouble-free installation in place of the original part. Selecting a housing compatible with the specific engine type is crucial for maintaining stable oil pressure and the correct operation of the entire lubrication system.

Characteristics of the used component

The oil filter housing comes from dismantling, which means it is a used part that retains the manufacturer's original specifications. This type of component is particularly attractive to users who:

• are looking for a factory solution at a reasonable price,
• prefer OEM parts over aftermarket replacements with uncertain geometry,
• are planning to service the lubrication system after a failure or during a major engine overhaul. Choosing an original, used housing allows you to maintain the structural integrity of the lubrication system in line with other engine components.

Importance for engine durability and oil cooling system

A functional oil filter housing has a direct impact on engine durability – it is responsible for the proper flow and filtration of oil, and in many configurations, it also works with the oil cooling circuit. Leaks or deformations in this area can lead to:

• oil pressure drops and accelerated wear of moving parts,
• local oil overheating,
• contamination of oil channels with metal shavings and sludge. To better understand how the lubrication and cooling system affects engine lifespan, it is worth checking out our guide: Engine cooling system – overheating, repair, and used radiators.

Support with selection and further system upgrades

When replacing the oil filter housing on an N57 diesel engine, it is worth verifying the condition of the filter cartridge, seals, and other lubrication system components at the same time to avoid the need for re-disassembly in the near future. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as oil filter cartridges, filter housings, or filter seals, check out the available parts in the BMW Oil Filters category. For major service work, such as an engine overhaul or replacement, the following guide on verifying used engines may also be helpful: Buying a used engine: 5 things you must check before installation.