Cardone
Power Steering Pump

Cardone 20-11878 Power Steering Pump

Brand Cardone 20-11878
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
Product line Power Steering Pump
Fits Buick and Oldsmobile · 17 vehicles

OE direct replacement. Remanufactured to meet or exceed original equipment performance.

Cast iron housing. Built for strength and dependable hydraulic operation.

Hydraulic efficiency tested. Every unit is checked for reliable, long-lasting performance.

Cross-references Buick 26008483, Buick 26009089 and Buick 26016158 for the same application. See all 8.

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Cardone Remanufactured Power Steering Pump 20-11878

Restore steering response with the Cardone remanufactured power steering pump 20-11878. Built for direct replacement use on select Buick Century, Buick Skylark, Oldsmobile Cutlass Calais, Oldsmobile Cutlass Ciera, and Oldsmobile Cutlass Cruiser applications, this pump is remanufactured to meet or exceed original equipment performance.

Cardone Power Steering Pump 20-11878 is engineered with updated wear surfaces, tested seals, and calibrated hydraulic components to support consistent steering assist and dependable fluid control.

Key Features

  • Remanufactured Original Equipment-style power steering pump 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 heat-related seal breakdown
  • Computer-tested final assembly for pressure, bypass, fluid flow, valve operation, steering effort, and noise
  • Precision-surfaced shafts to reduce premature seal wear
  • 100% tested and calibrated pressure relief valves
  • Cast iron housing with reservoir included
  • Hydraulic pump, instruction sheet, and sealing kit included

Product Details

This remanufactured pump is built from an original design that is inspected for improvement opportunities during the remanufacturing process. Cardone applies hydraulic efficiency testing to help ensure stable performance, and the unit is assembled with components selected for durability and leak resistance. For Buick Century and Oldsmobile Cutlass Ciera owners searching for a remanufactured power steering pump with reservoir, part number 20-11878 provides a direct-fit service replacement for the listed applications.

This part cross-references Buick and Oldsmobile OE numbers 26016158 and 26019670 for the same application.

What It Helps Fix

  • Hard steering at low speed
  • Loss of power steering assist
  • Whining or noisy pump operation
  • Fluid leakage from worn seals
  • Inconsistent steering effort after pump wear or contamination

Installation Notes

  • Compatible With 1989-1991 Buick Century, 1989-1991 Buick Skylark, 1989-1991 Oldsmobile Cutlass Calais, 1989-1991 Oldsmobile Cutlass Ciera, and 1989-1991 Oldsmobile Cutlass Cruiser, N/A.
  • Reservoir is included; pulley is not included.
  • Uses a hose barb inlet and threaded outlet with 16x1.5 outlet thread size.
  • Flush the steering system before installation and bleed all air from the system after service.
  • Use the OE-specified fluid and inspect for contamination to protect the replacement pump.
  • If the pulley fit is loose, inspect the original pulley and shaft condition before reuse.

Quality Assurance

Cardone remanufactures this pump to OE performance standards and tests all critical hydraulic components before release. The process includes hydraulic efficiency testing and final computer verification to help confirm reliable operation. Cardone also notes that its remanufacturing process reduces energy and raw material use compared with producing a new part.

This part fits 17 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1991BuickCentury3.3LV6N/AReservoir Labeled # WC 26016158; 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; Power Steering Pump
1991BuickCentury3.1LV6N/AReservoir Labeled # WC 26016158; 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; Power Steering Pump
1991BuickSkylark3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1991OldsmobileCutlass Calais3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1991OldsmobileCutlass Ciera3.3LV6N/AReservoir Labeled # WC 26016158; 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; Power Steering Pump
1991OldsmobileCutlass Cruiser3.3LV6N/AReservoir Labeled # WC 26016158; 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; Power Steering Pump
1990BuickCentury3.1LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1990BuickCentury3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1990BuickSkylark3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1990OldsmobileCutlass Calais3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1990OldsmobileCutlass Ciera3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1990OldsmobileCutlass Cruiser3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1989BuickCentury3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1989BuickSkylark3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1989OldsmobileCutlass Calais3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1989OldsmobileCutlass Ciera3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
1989OldsmobileCutlass Cruiser3.3LV6N/AReservoir included, optional filter, OE fluid recommended, system flush required for warranty.; Power Steering Pump
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Buick — 26008483Buick — 26009089Buick — 26016158Buick — 26019670Oldsmobile — 26008483Oldsmobile — 26009089Oldsmobile — 26016158Oldsmobile — 26019670