Nissens 90863 Automatic Transmission Oil Cooler

Nissens 90863 Automatic Transmission Oil Cooler

The Nissens 90863 automatic transmission oil cooler is an aluminum thermal component built for Mercedes-Benz hybrid and gasoline applications that require stable transmission fluid temperature control. It is a direct-fit option for select Mercedes-Benz GLC350e, S560e, C350e, S450, and S550e models.

Key Features

• Aluminum construction for efficient heat transfer and corrosion resistance
• Core dimensions: 5.9100 in. length, 4.2900 in. width, 4.0900 in. height
• 15-row core design for transmission fluid cooling performance
• Inlet diameter: 0.66 in.; outlet diameter: 0.39 in.
• Direct replacement for Mercedes-Benz applications listed below
• Part number 90863 for accurate catalog matching

Product Details

Nissens 90863 is an automatic transmission oil cooler engineered as part of the brand’s thermal management lineup. Nissens develops and manufactures cooling components to high quality standards, with ongoing product development to support changing vehicle technology. This cooler uses an aluminum core and compact dimensions to fit the specified Mercedes-Benz applications while helping manage transmission fluid temperature under normal driving and load conditions. Cross-reference part numbers include 0995001300 and A0995001300 for the same application.

Vehicle Fitment

• Fits 2018-2020 Mercedes-Benz GLC350e, N/A
• Fits 2019-2020 Mercedes-Benz S560e, N/A
• Fits 2016-2018 Mercedes-Benz C350e, N/A
• Fits 2018 Mercedes-Benz S450, N/A
• Fits 2015-2017 Mercedes-Benz S550e, N/A

Common Issues This Part May Address

• Transmission fluid running hotter than normal
• Cooling circuit damage or leakage at the oil cooler
• Reduced transmission temperature control during stop-and-go driving
• Need for a replacement on a Mercedes-Benz GLC350e, S560e, C350e, S450, or S550e

Installation Notes

Verify the inlet and outlet diameters, core dimensions, and OE cross-reference before installation. Inspect surrounding transmission cooler lines and seals during service, since gasket or seal is not included. Confirm vehicle-specific routing and mounting points on the Mercedes-Benz application before final assembly.

Quality Assurance

Nissens positions this cooler within its Genuine Nissens Quality standard, reflecting the company’s focus on thermal and engine efficiency components for the aftermarket. Part number 90863 is manufactured to support the listed Mercedes-Benz fitments with application-specific dimensions and materials.