Cardone 3R-502 Power Steering Reservoir

Power Steering Reservoir for BMW Applications

Restore proper power steering fluid storage and flow with this Cardone Power Steering Reservoir, part number 3R-502. It is a remote-mounted replacement built for BMW vehicles with the reservoir located away from the pump, including BMW 328i, BMW 335i, and BMW X3 applications.

Key Features

• Fits remote-mounted power steering reservoir applications
• Includes reservoir cap
• Black plastic construction
• Made from O.E.-grade material for strength and durability
• 100% tested for leak-free performance and proper function
• Designed to match O.E. fit, function, and performance
• Reservoirs with integrated filter maintain O.E.-level filtration efficiency
• Resists cracking from engine compartment heat

Product Details

Cardone 3R-502 is a new power steering reservoir for BMW steering systems that use a remote-mounted tank. The reservoir is often overlooked during diagnosis, even though a clogged or cracked unit can contribute to noise, foaming fluid, or reduced steering assist. This replacement follows original equipment design and includes the reservoir cap for a direct service solution on BMW X1, 128i, 135i, 328i, 335i, M3, 323i, 335d, 325i, X3, 328xi, 335xi, 325xi, 330i, and 330xi applications.

This part cross-references BMW 32416851218 for the same application.

Common Problems This Part Can Address

• Power steering fluid leaks from a cracked reservoir body
• Foaming fluid caused by trapped air in the steering system
• Noise related to restricted fluid flow or contamination
• Reduced steering assist from a clogged remote reservoir
• Heat-related deterioration of the reservoir housing

Installation Notes and Tips

Compatible With 2013-2015 BMW X1, N/A; 2008-2013 BMW 128i, N/A, without Active Steering; 2008-2013 BMW 135i, N/A, without Active Steering; 2013 BMW 135is, N/A, without Active Steering; 2007-2013 BMW 328i, N/A, without Active Steering; 2009-2013 BMW 328i xDrive, N/A, without Active Steering; 2007-2013 BMW 335i, N/A, without Active Steering; 2009-2013 BMW 335i xDrive, N/A, without Active Steering; 2011-2013 BMW 335is, N/A, without Active Steering; 2008-2013 BMW M3, N/A; 2006-2011 BMW 323i, N/A, without Active Steering; 2009-2011 BMW 335d, N/A; 2006-2010 BMW 325i, N/A, without Active Steering; 2007-2010 BMW X3, N/A; 2007-2008 BMW 328xi, N/A; 2007-2008 BMW 335xi, N/A; 2006 BMW 325xi, N/A; 2006 BMW 330i, N/A, without Active Steering; 2006 BMW 330xi, N/A.

Before replacement, inspect the return and outlet hoses for cracking, internal breakdown, or contamination. If the fluid is foaming, bleed trapped air from the system after installation and verify fluid condition before returning the vehicle to service.

Quality Assurance

Cardone manufactures this reservoir to O.E. design standards and tests each unit for fit and function. The reservoir is built from O.E.-grade material and is resistant to cracking from engine compartment temperatures, supporting consistent performance in BMW power steering systems.