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Cardone 20-59400 Power Steering Pump
Reliable Power Steering Pump for Cadillac, Oldsmobile, Pontiac
The Cardone Power Steering Pump 20-59400 is designed to restore smooth steering performance in select Cadillac, Oldsmobile, and Pontiac vehicles. This remanufactured pump offers a durable cast iron housing and precise fitment for models like the Aurora, Bonneville, DeVille, and Seville.
- Remanufactured power steering pump with cast iron housing
- Compatible with Cadillac Aurora, Oldsmobile Bonneville, Pontiac DeVille, and Seville
- Includes hydraulic pump, instruction sheet, and sealing kit
- Features O-ring hose port and threaded outlet attachment
- Press-on pulley attachment type (pulley not included)
- Power steering outlet thread size 16x1.5, inlet hose barb attachment
- Reservoir included; remote reservoir and reservoir cap not included
About the Cardone Power Steering Pump Line
The Cardone Power Steering Pump line focuses on remanufactured components engineered to meet or exceed original equipment specifications. This product line emphasizes durability and precise fitment, ensuring reliable hydraulic pressure delivery for power steering systems. The 20-59400 pump is part of this line, providing a cost-effective replacement option with included sealing kits and installation instructions to facilitate proper setup.
Product Details and Specifications
This power steering pump features a robust cast iron housing for long-lasting performance under demanding conditions. The pump uses an O-ring type hose port and a threaded outlet attachment sized at 16x1.5, designed to connect securely with the vehicle’s power steering system. The inlet attachment is a hose barb type, and the pump includes one outlet port. The pulley attaches via a press-on method; however, the pulley itself is not included. The package contains the hydraulic pump, a sealing kit, and an instruction sheet to assist with installation. The reservoir is included with the pump, but no remote reservoir or reservoir cap is provided.
Common Applications and Problem Solving
- Restores power assist in Cadillac Aurora, Oldsmobile Bonneville, Pontiac DeVille, and Seville models
- Eliminates whining noises caused by air or contamination in the power steering system
- Addresses hard steering issues, especially when assist is only present at higher engine RPMs
- Replaces worn or damaged pumps to prevent fluid leaks and maintain hydraulic pressure
- Helps resolve steering difficulties related to cracked or damaged pulleys (pulley replacement may be required separately)
Installation Notes and Tips
When installing the Cardone 20-59400 power steering pump, ensure the system is properly flushed to remove contamination that can cause premature pump failure. The press-on pulley attachment requires careful handling to avoid shaft damage. Since the pulley is not included, reuse the original pulley if it is in good condition or source a replacement separately. The included sealing kit should be used to prevent leaks at connection points. Check for air in the system after installation to avoid whining noises and ensure smooth steering operation.
Quality Assurance and Warranty
This remanufactured power steering pump undergoes thorough testing to meet functional standards comparable to original equipment. Cardone provides a warranty on this product to cover defects in materials and workmanship, supporting reliability and customer confidence. For specific warranty details, refer to Cardone’s official documentation.
| Brand | Cardone |
|---|---|
| Part Number | 20-59400 |
| Position | Power Steering Pump |
| E-Waste | No |
| Hose Port Type | O-Ring |
| Housing Material | Cast Iron |
| Mounting Hardware Included | No |
| Package Contents | Hydraulic Pump; Instruction Sheet; Sealing Kit |
| Power Steering Outlet ID Size | 0 |
| Power Steering Outlet Thread Size | 16x1.5 |
| Power Steering Pump Inlet Attachement Type | Hose Barb |
| Power Steering Pump Outlet Attachment Type | Threaded |
| Power Steering Reservoir Cap Included | No |
| Product Condition | Remanufactured |
| Pulley Attachement Type | Press-On |
| Pulley Included | No |
| Remote Reservoir | No |
| Reservoir Included | Yes |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2005 | Pontiac | Bonneville | 4.6L | V8 | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
| 2004 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2004 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2004 | Pontiac | Bonneville | 4.6L | V8 | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
| 2003 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2003 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2003 | Oldsmobile | Aurora | 4.0L | V8 | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
| 2002 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2002 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2002 | Oldsmobile | Aurora | 4.0L | V8 | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
| 2001 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2001 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2001 | Oldsmobile | Aurora | 4.0L | V8 | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
| 2000 | Cadillac | DeVille | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 2000 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 1999 | Cadillac | DeVille | N/A | Reservoir Included; with DeVille Livery Package (W20); In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1999 | Cadillac | DeVille | N/A | with Trailer Towing (V92) Package; Reservoir Included; In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1999 | Cadillac | DeVille | N/A | with Hearse Conversion Package (B9Q); Reservoir Included; In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1999 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump | ||
| 1998 | Cadillac | DeVille | N/A | Reservoir Included; with DeVille Livery Package (W20); In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1998 | Cadillac | DeVille | N/A | with Trailer Towing (V92) Package; Reservoir Included; In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1998 | Cadillac | DeVille | N/A | with Hearse Conversion Package (B9Q); Reservoir Included; In-Line Filter available; without Aftermarket Filtration Improvement; For warranty purposes it is recommended to always install a filter and to use suggested OE Fluid and flush the system; Option Codes are on the Service Parts Identification Sticker; Power Steering Pump | ||
| 1998 | Cadillac | Seville | N/A | Reservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.