Genuine 12311718712 Engine Oil Filter Adapter O-Ring

Engine Oil Filter Adapter O-Ring for BMW and Land Rover

This Genuine engine oil filter adapter O-ring seals the oil filter connection flange or engine support area on select BMW and Land Rover applications. Part number 12311718712 is used on multiple V8-equipped models where a precise seal is needed to help maintain proper oil control.

Key Features

• Genuine OE-style engine oil filter adapter O-ring
• Part number 12311718712
• 22 x 4 mm sealing size noted in fitment data
• Used on BMW 540i, M5, X5, Z8, 740i, 740iL, 840Ci, and 530i applications
• Also listed for 2003-2005 Land Rover Range Rover

Detailed Description

Built for specific engine sealing locations, this O-ring is listed for BMW and Land Rover vehicles that use a 22 x 4 mm oil filter adapter seal. Depending on the application, it installs behind the engine support or behind the oil filter connection flange. If you are servicing an oil leak at the adapter housing, replacing the seal with the correct Genuine part number 12311718712 helps restore the original sealing interface.

This part cross-references no additional part numbers in the provided data. For fitment-focused searches, it matches BMW 540i oil filter adapter O-ring applications, BMW M5 oil filter connection flange seal applications, and Land Rover Range Rover engine oil filter adapter seal applications.

What It Helps Address

• Oil seepage at the oil filter adapter or connection flange
• Leaks from a hardened or flattened O-ring seal
• Loss of sealing at the engine support-mounted adapter area
• Service replacement during oil filter housing maintenance
• Correcting fitment issues caused by using the wrong seal size

Installation Notes and Tips

Confirm the seal size and mounting location before installation. Clean the mating surfaces thoroughly, inspect the adapter housing for damage, and replace the O-ring only after verifying the application by year, make, and model. This part is listed for Fits 1993-2005 BMW and 2003-2005 Land Rover applications in the provided fitment data, including BMW 540i, M5, X5, Z8, 740i, 740iL, 840Ci, and 530i models.

Quality Assurance

Genuine parts are specified to match the original equipment application and dimensions called out in the fitment data. Part number 12311718712 is cataloged for direct-use sealing applications on the listed BMW and Land Rover vehicles.