Homeβ€Ί Steering > Steering, Gear and Related Componentsβ€Ί BBB Industries N503-0121 Steering Gear
Part #: N503-0121

BBB Industries N503-0121 Steering Gear

New Steering Gear
128 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement β€” Bolt-on fit, no modifications needed
New Steering Gear
Fitment: Chevrolet and GMC, Blazer, V1500 Suburban, V2500 Suburban, V3500, Jimmy, V10 Suburban, V20 Suburban, V30, V10, V20, V1500, V2500, K10, K10 Suburban, K20, K20 Suburban, K30, K5 Blazer, K1500, K1500 Suburban, K2500, K2500 Suburban, and K3500
Easy Returns β€” Return within 60 days for a full refund
Fast Shipping β€” Most orders ship same business day before 1pm CST

Overview of BBB Industries New Steering Gear N503-0121

The BBB Industries New Steering Gear N503-0121 is designed for reliable steering performance in Chevrolet and GMC trucks and SUVs. This electric steering gear is engineered to meet the specifications of various models including the Blazer, K10, K20, K1500, and their Suburban variants.

  • Output shaft diameter: 1.25 inches (31.75 mm)
  • Input shaft diameter: 0.72 inches (18.29 mm)
  • Input shaft spline count: 26 splines
  • Output shaft spline count: 9 splines
  • Inlet size: M18x1.50
  • Outlet size: M16x1.50
  • Pressure port thread size: M18x1.50
  • Return port thread size: M16x1.50
  • Number of mounting holes: 4
  • Turns lock to lock: 3.375
  • Installation kit included
  • Electric steering gear, new condition

About the New Steering Gear Product Line

The BBB Industries New Steering Gear product line focuses on delivering brand-new steering components that meet or exceed OEM specifications. This line is tailored for electric steering systems, providing precise fitment and reliable operation for Chevrolet and GMC vehicles. The N503-0121 part is part of this line, ensuring compatibility and quality for your steering system replacement needs.

Detailed Product Description

This steering gear unit features a 1.25-inch output shaft diameter and a 0.72-inch input shaft diameter, designed to match the original equipment on select Chevrolet and GMC trucks and SUVs. The 26-spline input shaft and 9-spline output shaft ensure secure engagement and smooth steering response. Thread sizes for inlet, outlet, pressure, and return ports are standardized at M18x1.50 and M16x1.50, facilitating proper hydraulic connections. With four mounting holes and a lock-to-lock turn ratio of 3.375, this steering gear provides precise control and durability. The included installation kit simplifies the replacement process.

Common Applications and Issues Addressed

  • Restores steering control in Chevrolet Blazer and GMC Jimmy models
  • Replaces worn or leaking steering gears in K-series trucks (K10, K20, K1500, K2500, K3500)
  • Solves issues related to loose or unresponsive steering
  • Addresses hydraulic leaks from pressure or return ports
  • Improves steering feel and reduces play in older steering systems

Installation Notes and Tips

  • Verify compatibility with your specific Chevrolet or GMC model before installation
  • Use the included installation kit for proper mounting and sealing
  • Ensure hydraulic lines match the M18x1.50 and M16x1.50 thread sizes
  • Check steering linkage alignment after installation
  • Follow manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

BBB Industries provides this New Steering Gear N503-0121 as a brand-new component manufactured to meet OEM standards. The product includes an installation kit to facilitate proper setup. While specific warranty details are not provided here, BBB Industries typically offers coverage against defects in materials and workmanship. For exact warranty terms, consult the product documentation or BBB Industries directly.

BrandBBB Industries
Part NumberN503-0121
PositionNew Steering Gear
Inlet SizeM18X1.50
Input Shaft Diameter0.72
Input Shaft Diameter18.29
Input Shaft Spline Count26
Installation Kit IncludedYes
Manual or PowerElectric
New or RemanufacturedNew
Number of Mounting Holes4
Outlet SizeM16X1.50
Output Shaft Diameter1.25
Output Shaft Diameter31.75
Output Shaft Spline Count9
Pressure Port Thread SizeM18X1.50
Return Port Thread SizeM16X1.50
Turns Lock To Lock3.375

This part fits 128 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
1991ChevroletBlazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991ChevroletV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991ChevroletV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991ChevroletV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991GMCV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991GMCV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1991GMCV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990ChevroletBlazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990ChevroletV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990ChevroletV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990ChevroletV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990GMCV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990GMCV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1990GMCV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989ChevroletBlazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989ChevroletV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989ChevroletV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989ChevroletV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989GMCV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989GMCV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1989GMCV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988ChevroletBlazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988ChevroletV10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988ChevroletV20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988ChevroletV30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988GMCV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988GMCV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1988GMCV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletBlazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletV10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletV10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletV20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletV20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987ChevroletV30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCV1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCV1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCV2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCV2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1987GMCV3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1986GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1985GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1984GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1983GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1982GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1981GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK10 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK20N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK20 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK30N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980ChevroletK5 Blazer4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCJimmy4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCK1500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCK1500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCK2500N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCK2500 Suburban4WDN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1980GMCK3500N/ACompatible with vehicles equipped with power steering.; New Steering Gear

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

193213697846959

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.