Cardone 3R-503 Power Steering Reservoir

Overview of Cardone Power Steering Reservoir 3R-503

The Cardone Power Steering Reservoir 3R-503 is designed for select BMW models, including the 1 Series M, 128i, 135i, and M5. This new, remote-mounted reservoir is constructed from durable plastic and comes with a cap included, ensuring reliable fluid containment for your power steering system.

• Compatible with BMW 1 Series M, 128i, 135i, 135is, 323i, 325i, 328i, 328i xDrive, 330i, 335i, 335is, 335i xDrive, M5, M6, and M6 Gran Coupe
• Part number 3R-503 for precise fitment
• Black plastic construction for durability and corrosion resistance
• Includes cap for secure sealing
• Remote mounted design for flexible installation
• Does not include fittings, mounting bracket, or hardware

About the Cardone Power Steering Reservoir Line

The Cardone Power Steering Reservoir product line focuses on providing replacement reservoirs that meet or exceed OEM specifications. These reservoirs are engineered to maintain proper fluid levels and prevent leaks, supporting the overall health of the power steering system. The 3R-503 model is part of this line, offering a reliable solution for BMW vehicles requiring a remote-mounted reservoir.

Detailed Product Description

This power steering reservoir is made from high-quality plastic, designed to resist cracking and leaks that commonly affect older reservoirs. The included cap ensures a tight seal to prevent fluid contamination and foaming caused by trapped air. The remote-mounted design allows for easier access and installation in the engine bay of compatible BMW models. While fittings and mounting hardware are not included, the reservoir is engineered for straightforward replacement in vehicles listed under its fitment.

Common Issues Addressed by This Reservoir

• Leaks caused by cracks in the original reservoir body
• Foaming fluid due to air trapped in the power steering system
• Degraded or damaged reservoirs affecting fluid containment
• Replacement of worn or failing power steering components in BMW 3 Series and M models
• Maintaining proper fluid levels to ensure smooth steering operation

Installation Notes and Tips

When installing the Cardone 3R-503 power steering reservoir, ensure the system is depressurized and the vehicle is cool. Since fittings and mounting hardware are not included, reuse existing components if they are in good condition or source replacements separately. Check for any air trapped in the system after installation to prevent foaming fluid. Follow manufacturer recommendations for hose replacement intervals to maintain system integrity.

Quality Assurance and Warranty

The Cardone Power Steering Reservoir 3R-503 is a new product designed to meet OEM standards for fit and function. Manufactured from durable plastic, it is built to resist common failure modes such as cracking and leaks. While specific warranty details are not provided, Cardone products typically come with a limited warranty covering defects in materials and workmanship.