Atlantic Automotive Enterprises 4578 Rack and Pinion Assembly

Remanufactured Manual Steering Rack for Sienna

Restore steering response with this remanufactured manual rack and pinion assembly from Atlantic Automotive Enterprises. Part number 4578 is built for select Toyota Sienna applications and includes inner tie rods for a direct replacement solution.

Key Features

• Application-specific rack and pinion assembly for select Toyota Sienna models
• Manufactured Again Certified quality process
• 100% hydraulically tested for pressure and flow
• Remanufactured with OE-grade, high-temperature seals and O-rings
• Electrostatically painted with automotive-grade finish for corrosion resistance
• Supplied with inner tie rods and new bellows secured by OE stainless steel clamps

Product Details

Atlantic Automotive Enterprises remanufactures this manual steering rack and pinion in the USA using OE components selected for fit and durability. The unit is designed for vehicles that use a manual rack with an Electric Power Steering column, a common setup on import applications. For 2011-2020 Toyota Sienna models, part number 4578 provides a direct replacement option when the original rack shows wear, leaks, or steering looseness. This part cross-references Toyota 4551008010 for the same application.

Common Steering Issues It Can Address

• Excessive steering play or vague on-center feel
• Fluid leakage or seal wear in the rack assembly
• Noisy or rough steering operation
• Damaged bellows or contamination entering the rack
• Wear in inner tie rods affecting steering precision

Installation Notes

Verify vehicle application before installation and compare the original rack configuration to part number 4578. Inspect related steering components, alignment settings, and EPS column condition during service. After installation, a professional wheel alignment is recommended to restore proper steering geometry.

Quality Assurance

Each unit is hydraulically tested for pressure and flow, remanufactured with OE-grade sealing components, and finished with automotive-grade electrostatic paint. Atlantic Automotive Enterprises backs this rack and pinion with a 24-month or 24,000-mile warranty.