NEW OEM Rivian R1T / R1S Electric Power Steering Rack and Pinion PT00439050-D

Restore precise steering control and factory driving performance with the NEW OEM Rivian Electric Power Steering Rack and Pinion Assembly (Part Number: PT00439050-D), engineered specifically for Rivian R1T and R1S vehicles. This genuine Rivian Electric Power Steering (EPS) assembly integrates the steering rack, pinion gear, electric assist motor, and steering control components into a complete OEM steering unit. Designed to deliver responsive steering input, excellent road feedback, and smooth electric steering assistance, the assembly works seamlessly with Rivian's advanced driver assistance systems (ADAS), stability control, and vehicle dynamics management.

Verify vehicle compatibility using the VIN before installation
Follow Rivian-approved steering system service procedures
Disconnect the 12V battery and isolate the high-voltage system as required before servicing
Inspect steering linkage, tie rod ends, steering column, mounting hardware, and suspension components for wear or damage
Install the steering rack using OEM mounting hardware and torque specifications
Connect all electrical connectors and steering components securely
Perform a complete front-end wheel alignment after installation
Calibrate the Electric Power Steering (EPS) system and any related ADAS features using Rivian-approved diagnostic equipment
Test steering operation and verify proper system functionality before returning the vehicle to service
Professional installation by a qualified EV technician is strongly recommended