BIG BORE XD® Steering Gear (Standard)| 1999-2010 GM/GMC Sierra 2500HD/3500HD

Features:

• Heavy-duty 45mm sector shaft
• Reduces steering gear deflection
• Helps prevent common seal failures
• Upgraded roller bearings improve durability
• Built for oversized tires
• Ideal for lifted truck applications
• Handles demanding off-road use
• Uses all-new components
• Works with factory pitman arm
• Available for Cylinder Assist systems
• Fits 1999-2010 GM 2500 and 3500
  

Take The Slop Out Of Your Steering For Good

If your factory steering has started to feel loose or struggles to keep up with larger tires, this PSC BIG BORE XD Steering Gear is the upgrade that changes the entire driving experience. Built specifically for 1999-2010 GM and GMC 2500HD, 3500HD, and Hummer H2 applications, it replaces one of the most common weak points in the steering system with a far stronger design. The oversized 45mm sector shaft provides the added strength needed to resist flex under heavy loads, giving you a more confident feel behind the wheel. Additionally, upgraded roller bearings help improve long term durability while reducing the wear that often leads to premature steering gear failure. Every unit is built using all new components instead of remanufactured parts, so you are starting with fresh, high quality internals designed for dependable performance. It also works with the factory 3 spline pitman arm, making it an excellent upgrade without requiring unnecessary changes to your existing steering setup. Whether your truck spends its weekends on rocky trails or simply carries oversized tires every day, this steering gear delivers the strength and confidence your truck deserves.

Engineered To Handle Serious Steering Demands

PSC designed the BIG BORE XD Steering Gear to solve the durability issues that have affected factory steering boxes for years. At the heart of the assembly is a heavy duty 45mm sector shaft that significantly increases strength compared to the original design while helping minimize steering gear deflection. Furthermore, upgraded roller bearings provide smoother support for internal components while improving resistance to the heavy side loads created by larger tires and lifted suspensions. Customers can choose between a standard steering gear or the SG038R version, which includes the proper ports for PSC Cylinder Assist system plumbing. The gear is constructed entirely from new components and is never assembled using remanufactured parts, ensuring consistent quality throughout the unit. It is designed to work with the factory 3 spline pitman arm, simplifying installation while maintaining proper compatibility with the original steering linkage. Once installed with a properly flushed and bled power steering system, this steering gear is ready to deliver the reliable steering performance needed for demanding street, towing, and off road use.

Fitment: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GM Sierra 2500HD/3500HD

Notes:

• Fits 1999-2010 GM 2500 and 3500 4x4 models.
• Also compatible with applicable Hummer H2 models.
• Designed for the factory 3-spline pitman arm.
• Choose the standard or Cylinder Assist version.
• SG038R is intended for PSC Cylinder Assist systems.
• Cylinder Assist models include ram assist plumbing ports.
• Properly flush the power steering system before installation.
• Bleed the system thoroughly after installation.
• Confirm vehicle fitment before placing your order.
• Package includes one BIG BORE XD steering gear.