Nissens 996155 Engine Coolant Reservoir

Nissens 996155 Engine Coolant Reservoir

The Nissens 996155 engine coolant reservoir is a pressurized plastic expansion tank built for BMW cooling systems that require a 1.20L reservoir with a cap and level sensor. It is engineered for direct replacement use on select BMW X3, X5, 325i, 330i, 330xi, 323i, 328Ci, and 328i applications.

Key Features

• Plastic coolant reservoir construction for OE-style fit and function
• Pressurized design with cap included
• Integrated level sensor included
• 1.20L capacity
• Designed for BMW cooling system applications
• Nissens part number 996155

Product Details

Nissens develops thermal and engine-efficiency components with a focus on consistent manufacturing quality across its aftermarket range. This coolant reservoir is built to match the needs of BMW cooling systems that use a pressurized expansion tank, helping maintain proper coolant volume and system monitoring. The Nissens 996155 is a practical replacement choice for BMW X3 and BMW X5 models, as well as BMW 325i, 330i, 330xi, 323i, 328Ci, and 328i applications listed below.

This part cross-references Standard Ignition CXT100 for the same application.

What This Part Helps Address

• Cracked or leaking coolant reservoir housing
• Low coolant level warnings from a faulty reservoir sensor
• Loss of coolant from a damaged pressurized tank
• Cooling system service needs on BMW X3 and BMW X5 models
• Replacement of an aging expansion tank on BMW 3 Series applications

Fitment

• Fits 2004-2010 BMW X3, N/A
• Fits 2001-2006 BMW X5, N/A
• Fits 2001-2005 BMW 325i, N/A
• Fits 2001-2005 BMW 330i, N/A
• Fits 2001-2005 BMW 330xi, N/A
• Fits 1999-2000 BMW 323i, N/A
• Fits 2000 BMW 328Ci, N/A
• Fits 1999-2000 BMW 328i, N/A

Installation Notes and Quality Assurance

Verify the reservoir shape, cap style, sensor connection, and mounting points against the original part before installation. Transfer or replace any related cooling system components as needed during service, and bleed the system carefully after installation to remove trapped air. Nissens manufactures this reservoir to Genuine Nissens Quality standards, with product development focused on thermal system performance and aftermarket fitment.