BBB Industries N503-0190 Steering Gear

Overview of BBB Industries New Steering Gear N503-0190

The BBB Industries New Steering Gear N503-0190 is designed for reliable steering performance in heavy-duty Chevrolet and GMC trucks. This electric steering gear is engineered to meet the demands of Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models, providing precise control and durability.

• Output shaft diameter: 1.65 inches (41.91 mm)
• Input shaft diameter: 0.65 inches (16.51 mm)
• Electric power steering gear type
• Inlet size: M18x1.50
• Outlet size: M16x1.50
• Pressure port thread size: M18x1.50
• Return port thread size: M16x1.50
• Number of mounting holes: 3
• Output shaft spline count: 40
• Turns lock to lock: 3.62 or 3.5

Details on the New Steering Gear Product Line

The New Steering Gear line from BBB Industries focuses on delivering brand-new, high-quality steering components designed to restore original steering performance. This product line emphasizes precise fitment and reliable operation for heavy-duty trucks, including electric steering gear assemblies like the N503-0190. Each unit is manufactured to meet or exceed OEM specifications, ensuring compatibility and durability for Chevrolet and GMC heavy-duty models.

Technical Description and Specifications

The N503-0190 steering gear features an electric power steering design tailored for heavy-duty applications. The output shaft diameter measures 1.65 inches (41.91 mm), while the input shaft diameter is 0.65 inches (16.51 mm), providing robust mechanical engagement. The unit includes three mounting holes for secure installation. Thread sizes for the pressure and return ports are M18x1.50 and M16x1.50 respectively, matching OEM hydraulic connections. The output shaft spline count is 40, ensuring proper fit with the steering linkage. The steering gear offers a lock-to-lock turn range of approximately 3.5 to 3.62 turns, supporting responsive steering control in Chevrolet Sierra and Silverado 2500 and 3500 HD trucks.

Common Applications and Problem Resolution

• Replacement for worn or leaking steering gear assemblies in Chevrolet Sierra 2500 HD and 3500 HD
• Restores steering precision in GMC Sierra and Silverado heavy-duty trucks
• Addresses issues with electric power steering failure or inconsistent assist
• Eliminates excessive play or steering wheel vibration caused by damaged gears
• Resolves hydraulic leaks related to pressure and return port seals

Installation Notes and Tips

When installing the BBB Industries New Steering Gear N503-0190, ensure compatibility with Chevrolet and GMC heavy-duty models listed. Verify the three mounting holes align correctly with the vehicle’s frame. Confirm that the input and output shaft diameters match the steering linkage components. Properly torque all fasteners to manufacturer specifications. Bleed the power steering system thoroughly to remove air and ensure smooth operation. Use the correct thread sizes (M18x1.50 and M16x1.50) for pressure and return port fittings to prevent leaks.

Quality Assurance and Warranty

BBB Industries manufactures the New Steering Gear line to meet OEM standards for fit, form, and function. Each steering gear undergoes rigorous quality control to ensure durability and performance. The N503-0190 part is a brand-new unit, not remanufactured, providing reliable service life. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary by region.