ATP Parts B-398 Transmission Oil Filter

BMW Transmission Oil Filter Replacement

ATP Parts B-398 is a premium replacement transmission oil filter for select BMW applications. Built as an exact-fit replacement, it is made for drivers servicing the transmission on BMW 323i, 328i, 330i, X3, and X5 models from the late 1990s through 2006.

ATP Parts Premium Replacement focuses on direct-fit service parts for routine maintenance and repair. This transmission filter follows that approach with application-specific fitment for BMW automatic transmission service.

Key Features

• Transmission oil filter for BMW automatic transmission service
• ATP Parts Premium Replacement line
• Exact-fit replacement part for listed applications
• Part number B-398 for catalog and service reference
• Fits select BMW 323i, 328i, 330i, 325i, 330Ci, X3, X5, Z3, 528i, and 530i applications

Detailed Description

ATP Parts B-398 is a transmission oil filter engineered for exact-fit replacement on listed BMW models. It is intended for transmission maintenance where a worn or restricted filter is being replaced during service. This part number, B-398, is listed across multiple BMW 3 Series, 5 Series, X3, X5, and Z3 applications, including 1999-2006 BMW 323i, 328i, 325i, 330i, 330Ci, 530i, 528i, X3, and X5 coverage.

Some listed applications note no gasket included; if an OE-type reusable gasket is needed, order 749531. This part cross-references BMW service applications that use the same filter style for the listed vehicles.

Common Problems This Part Can Address

• Restricted transmission fluid flow from a clogged filter
• Transmission service needs during fluid and filter maintenance
• Filter replacement after high-mileage operation
• Service on BMW automatic transmissions with the listed fitments
• Restoring proper filtration during transmission pan service

Installation Notes and Tips

Verify the vehicle year, model, and transmission service configuration before ordering. Review the fitment notes carefully, especially the applications that specify no gasket and require OE-type reusable gasket 749531. Clean the transmission pan and mating surfaces during installation, and follow the vehicle service procedure for fluid level checks after reassembly.

• Fits 2004-2006 BMW 330Ci, N/A
• Fits 2006 BMW 330xi, N/A; no gasket, if you need OE type reusable gasket order 749531
• Fits 2004-2006 BMW X3, N/A
• Fits 2001-2006 BMW X5, N/A
• Fits 2004-2005 BMW 325Ci, N/A
• Fits 2004-2005 BMW 325i, N/A
• Fits 2005 BMW 325xi, N/A; no gasket, if you need OE type reusable gasket order 749531
• Fits 2004-2005 BMW 330i, N/A
• Fits 2001-2005 BMW 330xi, N/A
• Fits 2001-2004 BMW 325xi, N/A
• Fits 2003 BMW 330Ci, N/A; no gasket, if you need OE type reusable gasket order 749531
• Fits 2003 BMW 330i, N/A; no gasket, if you need OE type reusable gasket order 749531
• Fits 2001 BMW 530i, N/A
• Fits 2001 BMW Z3, N/A
• Fits 2000 BMW 323Ci, N/A
• Fits 1999-2000 BMW 323i, N/A
• Fits 2000 BMW 328Ci, N/A
• Fits 1999-2000 BMW 328i, N/A
• Fits 2000 BMW 528i, N/A
• Fits 1999 BMW 323is, N/A; no gasket, if you need OE type reusable gasket order 749531
• Fits 1999 BMW 328is, N/A; no gasket, if you need OE type reusable gasket order 749531

Quality Assurance

ATP Parts describes this Premium Replacement component as an exact-fit, no-compromise replacement part. B-398 is built to match the listed BMW transmission applications for service-focused repair work.