Nissens 90657 Automatic Transmission Oil Cooler

Nissens 90657 Automatic Transmission Oil Cooler

The Nissens 90657 automatic transmission oil cooler is built with an aluminum core and integrated seal for direct-fit service on select BMW applications. It is a practical replacement for vehicles that need stable transmission fluid temperature control, including BMW X3, 325Ci, 330Ci, 325i, 325xi, 330i, 330xi, Z4, 328Ci, and 328i models.

Key Features

• Aluminum construction for efficient heat transfer and corrosion resistance
• Core dimensions: 6.4600 length, 3.1100 height, and 3.07 width
• 11-row core design
• 0.55 inlet diameter and 0.55 outlet diameter
• Gasket or seal included for service replacement
• Part number 90657 for easy identification

Detailed Description

Nissens 90657 is an automatic transmission oil cooler developed for BMW cooling-system service where transmission fluid temperature control is critical. Nissens focuses on thermal and engine-efficiency components, and this cooler reflects that approach with a compact aluminum core and OE-style fitment details. It cross-references BMW 17221436258 and URO 17227505826 for the same application. This part number 90657 is a direct replacement choice for BMW X3, 325Ci, 330Ci, 325i, 325xi, 330i, 330xi, Z4, 328Ci, and 328i coverage listed below.

What It Helps Address

• Transmission fluid overheating
• Heat-related transmission performance loss
• Fluid temperature instability during stop-and-go driving
• Cooling-system service needs on BMW automatic transmission applications
• Leak concerns at the cooler sealing surface when the seal is replaced

Installation Notes and Fitment

Fits 2008-2010 BMW X3, N/A.

Fits 2004-2006 BMW X3, N/A.

Fits 2001-2006 BMW 325Ci, N/A.

Fits 2001-2006 BMW 330Ci, N/A.

Fits 2001-2005 BMW 325i, N/A.

Fits 2001-2005 BMW 325xi, N/A.

Fits 2001-2005 BMW 330i, N/A.

Fits 2001-2005 BMW 330xi, N/A.

Fits 2003-2005 BMW Z4, N/A.

Fits 2000 BMW 328Ci, N/A.

Fits 2000 BMW 328i, N/A.

Confirm cooler dimensions, inlet and outlet size, and seal condition before installation. Clean mating surfaces thoroughly and inspect transmission lines and surrounding cooling components during replacement.

Quality Assurance

Nissens is a market-leading manufacturer of thermal management components, and its products are developed and manufactured to consistent quality standards under the Genuine Nissens Quality approach.