BBB Industries N503-0190 Steering Gear
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BBB Industries
 New Steering Gear

BBB Industries N503-0190 Steering Gear

Brand BBB Industries N503-0190
Output Shaft Diameter 1.65
Output Shaft Diameter 41.91
Input Shaft Diameter 0.65
Input Shaft Diameter 16.51
Inlet Size M18x1.50
Installation Kit Included Yes
Manual or Power Electric
New or Remanufactured New
Number of Mounting Holes 3
Outlet Size M16x1.50
Output Shaft Spline Count 40
Pressure Port Thread Size M18x1.50
Return Port Thread Size M16x1.50
Turns Lock To Lock 3.62 or 3.5
Product line New Steering Gear
Fits Chevrolet and GMC · 44 vehicles

New steering gear. A fresh replacement for restoring precise steering response.

Electric assist. Built for electric steering systems.

Installation kit included. Everything needed for a smoother replacement job.

Cross-references 19153560, 19256662 and 19327584 for the same application. See all 13.

$626.23Free shipping
In stock · usually ships same day before 1pm CST
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Order total $626.23
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Steering Gear options

New Steering Gear for Silverado and Sierra HD

BBB Industries New Steering Gear N503-0190 is a new electric steering gear built for heavy-duty GM trucks that need precise steering response and OE-style fitment. It is engineered for 2011-2021 Chevrolet Silverado 2500 HD and 3500 HD, plus GMC Sierra 2500 HD and 3500 HD applications with power steering and without Variable Assisted Steering (RPO NV8).

Key Features

  • Brand: BBB Industries New Steering Gear
  • Part number: N503-0190
  • Electric steering gear for power steering applications
  • New, not remanufactured
  • Installation kit included
  • 3 mounting holes for direct replacement fitment
  • Input shaft diameter: 0.65 in. / 16.51 mm
  • Output shaft diameter: 1.65 in. / 41.91 mm
  • Output shaft spline count: 40
  • Pressure port thread size: M18x1.50
  • Return port thread size: M16x1.50
  • Turns lock to lock: 3.62 or 3.5

Product Details

The BBB Industries New Steering Gear line focuses on replacement steering components built for direct-fit service on late-model and earlier heavy-duty GM trucks. This N503-0190 steering gear is specified for Chevrolet Silverado HD and GMC Sierra HD platforms, with fitment covering 2011-2015 power steering trucks and 2016-2021 models without Variable Assisted Steering. For buyers searching for a steering gear for 2016-2020 Chevrolet Silverado 2500 HD, 2016-2020 GMC Sierra 3500 HD, or a 2021 Silverado 2500 HD steering gear, this part matches the listed application details and port/thread specifications.

This part cross-references OE numbers such as 19153560 and 19256662 for the same application.

What It Helps Address

  • Excessive steering play or loose steering feel
  • Hard steering response in power steering systems
  • Internal wear in the steering gear assembly
  • Fluid leakage at the pressure or return ports
  • Steering gear replacement needs on Silverado HD and Sierra HD trucks

Installation Notes and Tips

Verify that the vehicle is equipped with power steering and does not use Variable Assisted Steering (RPO NV8) before ordering. Confirm the inlet and outlet thread sizes, mounting-hole count, and shaft dimensions against the original unit. After installation, inspect the steering linkage, align the front end as needed, and bleed the power steering system according to service procedures. The included installation kit supports a complete replacement process, but all vehicle-specific checks should be completed before final assembly.

Quality Assurance

This BBB Industries steering gear is supplied as a new component for service replacement on Chevrolet Silverado HD and GMC Sierra HD trucks. Part number N503-0190 is built to match the listed fitment and dimensional requirements for the specified applications.

Related reading

This part fits 44 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2021ChevroletSilverado 2500 HDN/Aw/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2021ChevroletSilverado 3500 HDN/Aw/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2021GMCSierra 2500 HDN/Aw/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2021GMCSierra 3500 HDN/Aw/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2020ChevroletSilverado 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2020ChevroletSilverado 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2020GMCSierra 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2020GMCSierra 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2019ChevroletSilverado 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2019ChevroletSilverado 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2019GMCSierra 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2019GMCSierra 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2018ChevroletSilverado 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2018ChevroletSilverado 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2018GMCSierra 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2018GMCSierra 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2017ChevroletSilverado 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2017ChevroletSilverado 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2017GMCSierra 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2017GMCSierra 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2016ChevroletSilverado 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2016ChevroletSilverado 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2016GMCSierra 2500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2016GMCSierra 3500 HDN/APower Steering; w/o Variable Assisted Steering (Exc. RPO Code NV8); New Steering Gear
2015ChevroletSilverado 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2015ChevroletSilverado 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2015GMCSierra 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2015GMCSierra 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2014ChevroletSilverado 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2014ChevroletSilverado 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2014GMCSierra 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2014GMCSierra 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2013ChevroletSilverado 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2013ChevroletSilverado 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2013GMCSierra 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2013GMCSierra 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2012ChevroletSilverado 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2012ChevroletSilverado 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2012GMCSierra 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2012GMCSierra 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2011ChevroletSilverado 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2011ChevroletSilverado 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2011GMCSierra 2500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
2011GMCSierra 3500 HDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
19153560192566621932758419330691193306922283182022845815229233792292338122980020229800218431566084315661