Atlantic Automotive Enterprises 5590N Power Steering Pump

OE-Style Power Steering Pump for Highlander

Atlantic Automotive Enterprises New Power Steering Pump, part number 5590N, is an application-specific hydraulic replacement for select Toyota Highlander models. It is built with OE-quality components and tested in the USA under load to verify hydraulic operation and fitment.

• 100% hydraulically tested under load in the USA
• Pulley included and preinstalled
• Return pipe included and preinstalled
• Heat-treated upgraded shaft for added durability
• No core charge

Product Details

The AAE New Power Steering Pump line is focused on direct-fit hydraulic steering service parts that match original equipment requirements for operation and installation. Part number 5590N is supplied as an application-specific unit for 2001-2007 Toyota Highlander models, with the pulley and return pipe already installed. This power steering pump is also cross-referenced to Toyota OE numbers 4431017060 and 4431028240 for the same application.

Common Steering Issues Addressed

• Hard steering effort at low speeds
• Whining or groaning noise from the power steering system
• Fluid leakage from a worn pump assembly
• Loss of hydraulic assist during turns
• Rough pump operation caused by internal wear

Installation Notes

For best results, flush the steering system before installation and refill with an OE-approved power steering fluid. Confirm that the reservoir, sensor, and return pipe configuration matches the vehicle before installation. This part is listed for 2001-2007 Toyota Highlander, N/A position, with notes for new, w/pulley, w/o reservoir, w/return pipe, and w/sensor.

Quality Assurance

Each 5590N pump is inspected and tested before shipment, including hydraulic testing under load in the USA. AAE backs this power steering pump with a 24-month or 24,000-mile warranty.