Cardone 21-5304 Power Steering Pump

Remanufactured Power Steering Pump for Nissan

Restore steering assist with this Cardone remanufactured power steering pump, part number 21-5304. It is built to meet or exceed original equipment performance and is engineered for direct fitment on select 2002-2003 Nissan Altima and 2002-2003 Nissan Sentra applications.

• Remanufactured Original Equipment-style replacement for proper vehicle fit
• Triple-tested critical components, including cam packs and spool valves
• 100% new O-rings and premium HNBR seals to help resist leaks and heat breakdown
• Computer-tested final assembly for pressure, bypass, fluid flow, valve operation, steering effort, and noise
• Precision-surfaced shafts to reduce premature seal wear
• Supplied with a hydraulic pump, instruction sheet, and sealing kit
• Remote reservoir design; reservoir not included
• O-ring hose port, threaded outlet, hose barb inlet, and bolt-on pulley attachment

Product Details

Cardone Power Steering Pump 21-5304 is a remanufactured hydraulic pump for Nissan steering systems that require a remote reservoir setup. The aluminum housing, calibrated pressure relief valve, and tested internal components are selected to support consistent hydraulic performance. This part cross-references Nissan 491108J000 for the same application.

Fits 2002-2003 Nissan Altima, N/A. Fits 2002-2003 Nissan Sentra, N/A. For Nissan Altima and Nissan Sentra power steering repair, this pump is a direct replacement option when the original unit has lost pressure, become noisy, or is showing signs of internal wear.

Common Steering Problems This Pump May Address

• Whining or groaning power steering pump noise
• Hard steering at idle or low engine speed
• Uneven or delayed steering assist
• Fluid leakage from worn seals or shaft surfaces
• Pressure loss caused by internal valve or component wear

Installation Notes and Tips

Reservoir is not included, and the vehicle requires an in-line filter, OE fluid, and a full system flush for warranty compliance. Before installation, inspect the pulley fit, flush contamination from the steering system, and bleed all air from the lines. If the pump whines after installation, recheck fluid level and look for foam or air bubbles in the reservoir. Some systems may require vacuum bleeding to remove trapped air.

Quality Assurance

Every Cardone remanufactured power steering pump is built from original design cores that are reviewed for improvement opportunities, with upgrades applied where appropriate. Critical parts are tested, seals are replaced with new HNBR materials, and the finished assembly is hydraulically efficiency tested to help deliver reliable long-term operation. The remanufacturing process also reduces raw material and energy use compared with producing a new part.