Cardone 21-5390 Power Steering Pump

Remanufactured Power Steering Pump for Cadillac SRX

Restore hydraulic steering performance with this CARDONE remanufactured power steering pump, part number 21-5390. It is built for 2004-2009 Cadillac SRX applications and is engineered to deliver OE-style fit and dependable steering assist.

The CARDONE Power Steering Pump line focuses on remanufactured OE replacement units that are inspected, upgraded where needed, and tested for hydraulic efficiency. For Cadillac SRX owners searching for a remanufactured power steering pump 21-5390, this unit is built around critical wear components and validated for pressure, flow, valve operation, and steering effort.

Key Features

• Fits 2004-2009 Cadillac SRX, power steering pump application
• Remanufactured Original Equipment design for direct vehicle fit
• All critical components are triple-tested for reliability
• 100% new O-rings and premium HNBR seals help resist leaks and heat breakdown
• Computer-tested final assembly measures pressure, bypass, fluid flow, valve operation, steering effort, and noise
• Shaft surfaces are restored to precise specifications 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 with threaded outlet, 18x1.5 thread size
• Aluminum housing with press-on pulley attachment type

Detailed Description

CARDONE 21-5390 is a remanufactured power steering pump for the Cadillac SRX that follows the original equipment design while incorporating durability-focused updates where applicable. The pump is assembled with tested and calibrated pressure relief valves and is checked for hydraulic efficiency before release. This helps deliver consistent steering assist and stable system operation in daily driving.

This part cross-references Cadillac OE numbers 25754248 and 25770742 for the same application. If you are replacing a worn Cadillac SRX power steering pump, 21-5390 provides the correct remanufactured replacement format for vehicles equipped with a remote reservoir setup.

What It Helps Fix

• Hard steering at low engine speed
• Whining or noisy power steering pump operation
• Loss of hydraulic assist from internal wear
• Leakage from aged seals or O-rings
• Inconsistent steering effort after pump failure

Installation Notes and Tips

Fits 2004-2009 Cadillac SRX, power steering pump. This application uses a remote reservoir, and the reservoir is not included. The pulley is not included and the pulley attachment type is press-on, so the existing pulley must be inspected before reuse. The system should be flushed and filled with OE-specified fluid before startup, and the in-line filter noted for this application should be checked during service. If the original pulley has a loose fit or the shaft was damaged during removal, replace the pulley before installation.

After installation, bleed the system fully and verify fluid level, steering effort, and noise at idle and elevated engine speed. Contamination in the flow control valve bore can cause poor assist, so a clean system is important for proper operation.

Quality Assurance

Every CARDONE remanufactured power steering pump is tested for hydraulic performance, including pressure, bypass, flow, valve function, steering effort, and noise. The remanufacturing process also reduces raw material and energy use compared with producing a new part, while maintaining OE-style fit and function for the Cadillac SRX.