Nissens 996290 Engine Coolant Reservoir

Nissens Engine Coolant Reservoir 996290

The Nissens 996290 engine coolant reservoir is a pressurized expansion tank built for reliable coolant storage and system pressure control. It includes a cap and a level sensor, making it a practical replacement for BMW cooling system service on select 1992-2000 applications.

Key Features

• Plastic coolant reservoir with OE-matching material selection
• Pressurized design for proper cooling system operation
• Cap included for a complete reservoir replacement
• Level sensor included for coolant level monitoring
• 0.50L capacity
• Reinforced fittings and durable welded construction for secure connection points

Product Details

Nissens builds this engine coolant reservoir to match original equipment fit and function, using durable plastics and strengthened welds for dependable sealing and connection integrity. The pre-mounted level sensor and included pressure cap support a straightforward replacement on BMW Z3, 323is, 328is, M3, 323i, 328i, 528i, 320i, 325i, and 325is applications covered by the fitment data. This part number, 996290, is a direct replacement choice for drivers servicing the cooling system on select BMW models.

This part cross-references Gates 23929 for the same application.

What It Helps Fix

• Cracked or leaking coolant reservoir housing
• Faulty coolant level warning readings from a worn sensor
• Loss of cooling system pressure from a damaged tank or cap
• Coolant seepage at weakened fittings or weld points
• Reservoir replacement needs during BMW cooling system repair

Installation Notes and Tips

Verify the reservoir shape, sensor connection, and hose routing against the original unit before installation. Inspect the pressure cap seal, coolant hoses, and mounting points for wear, and replace any damaged related components during service. After installation, refill with the correct coolant mixture and bleed the system according to the vehicle service procedure to remove trapped air.

Quality Assurance

Nissens tests the reservoir and internal components for fit and dependable performance. The OE-style plastic construction, reinforced fittings, and pressure-cap design support consistent cooling system service on compatible BMW applications.

Compatible With

• Fits 1997-2000 BMW Z3
• Fits 1998-1999 BMW 323is
• Fits 1996-1999 BMW 328is
• Fits 1994-1999 BMW M3
• Fits 1998 BMW 323i
• Fits 1996-1998 BMW 328i
• Fits 1997-1998 BMW 528i
• Fits 1992-1995 BMW 320i
• Fits 1992-1995 BMW 325i
• Fits 1992-1995 BMW 325is