Power Steering & Gearbox

Eliminate loose on-center play, highway wandering, and steering box fluid leaks on your 2001–2004 Chevy Silverado or GMC Sierra 2500HD/3500HD with our selection of LB7 Duramax power steering gearboxes. After decades of road vibration, heavy towing, and turning oversized wheel and tire packages, the factory GM steering gearbox develops severe internal worm gear wear and loose sector shaft tolerances that no front-end alignment can correct. Upgrading to a premium, blueprinted, or quick-ratio steering gear replaces worn internal bearings and custom-fits oversized ball bearings into the worm track to restore razor-sharp steering feedback and rock-solid tracking. We stock heavy-duty remanufactured and upgraded replacement steering gearboxes, frame reinforcement hardware, and high-pressure fluid lines from top brands like RedHead Steering Gears and PSC Motorsports. Browse our complete inventory of direct-fit LB7 steering gearboxes below to restore tight, effortless control behind the wheel.