Cardone 3R-423 Power Steering Reservoir

Power Steering Reservoir for Buick, Oldsmobile, Pontiac

The Cardone 3R-423 power steering reservoir is a direct replacement for vehicles that use a remote or engine-mounted reservoir in the steering system. It is built to OE design standards and includes a reservoir cap for a clean, service-ready installation.

For Buick LeSabre, Park Avenue, Riviera, and Regal, as well as Oldsmobile 88 and LSS and Pontiac Bonneville applications, this reservoir addresses a common source of steering noise, fluid aeration, and pressure loss when the original unit is restricted or leaking.

Key Features

• Cardone Power Steering Reservoir, part number 3R-423
• Designed to match OE fit, function, and performance
• 100% tested for leak-free operation and proper function
• Made from OE-grade plastic for strength and durability
• Resistant to cracking from engine-compartment heat
• Cap included for a complete replacement
• Mounting hardware included; fittings and mounting bracket not included

Detailed Description

The Cardone 3R-423 is a new power steering reservoir engineered as a direct OE-style replacement for select Buick, Oldsmobile, and Pontiac vehicles. It is manufactured to the original design and is 100% tested to help ensure proper fit and function. The reservoir is black, uses plastic construction, and is built to handle the heat and vibration common in the engine bay. This part cross-references Buick, Oldsmobile, and Pontiac OE number 26043363 for the same application.

Cardone’s Power Steering Reservoir line focuses on replacing the reservoir itself when the pump is not the root cause of the problem. That makes this product a practical choice when diagnosing steering noise, foaming fluid, or a leak at the reservoir body or hose connections. Part number 3R-423 is a direct service replacement for the listed applications and is also suitable when replacing the reservoir during a full power steering pump service.

What It Helps Fix

• Power steering fluid foaming caused by trapped air or restricted flow
• Noise that is traced to a clogged or leaking reservoir
• Fluid loss from cracks in the reservoir body
• Pressure issues caused by contamination in the steering system
• Leak points at the reservoir outlet or return hose connections

Installation Notes and Tips

• Confirm reservoir location before service; it may be mounted on the firewall, inner fender, or near the pump depending on the vehicle.
• Inspect return and outlet hoses for cracking, debris, or internal breakdown before installing the new reservoir.
• Bleed air from the power steering system after installation to reduce foaming and cavitation.
• Replace contaminated fluid and follow the vehicle-specific OE service procedure.
• Fits 1996-1999 Buick LeSabre, N/A; Fits 1997-1999 Buick Park Avenue, N/A; Fits 1997-1999 Buick Riviera, N/A; Fits 1995 Buick Riviera, N/A; Fits 1996-1999 Oldsmobile 88, N/A; Fits 1996-1999 Pontiac Bonneville, N/A; Fits 1996-1997 Oldsmobile LSS, N/A; Fits 1996 Buick Regal, N/A, with Variable Effort Steering (NV7); Option Codes are on the Service Parts Identification Sticker.

Quality Assurance

Each Cardone 3R-423 reservoir is 100% tested to verify fit and function before release. The OE-grade material selection and OE-design construction support consistent service performance in the listed Buick, Oldsmobile, and Pontiac applications.