USA STANDARD GEAR
More Information for USA STANDARD GEAR USA21900
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USA STANDARD GEAR USA21900  
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USA STANDARD GEAR USA21900 Specifications
Inboard End Spline Quantity33
Inboard End TypeSplined
MaterialSteel
Outboard End Spline Quantity21
Outboard End TypeSplined
Intermediate Axle Shaft
Features & Benefits:
  • High-quality materials: Constructed with durable and reliable materials, the YA G19121909 ensures long-lasting performance and peace of mind.
  • Perfect fit: Designed specifically for the GM Clamshell 33spl RH Inner Disconnect Axle, this axle stub guarantees a seamless and precise fit, eliminating any compatibility concerns.
  • Enhanced strength: With its 33-spline count, the YA G19121909 offers exceptional strength and durability, making it capable of handling the toughest driving conditions.
  • Smooth operation: Equipped with a pilot bearing and CV intermediate shaft, this stub axle ensures smooth and efficient power transfer, providing a comfortable driving experience.
  • Reliable performance: Trust in the USA Standard Gear & Axle brand to deliver superior quality and performance. The YA G19121909 is engineered to meet the highest standards and exceed expectations.
  • Front right-hand inner disconnect: Designed specifically for the front right-hand side, this stub axle ensures optimal functionality and performance in your vehicle's front drivetrain.
  • Genuine GM 9.25"IFS compatibility: Enjoy peace of mind knowing that the YA G19121909 is designed to perfectly fit and work with GM's 9.25"IFS system.
  • Easy installation: The YA G19121909 comes with everything you need for a hassle-free installation process. No need to worry about complicated instructions or additional parts.
  • Improved traction: By replacing your old or worn-out axle stub with the YA G191
Steel Properties
SAE GradeTensile Strength (psi)Yield Strength (psi)
1040120,000106,000
1050162,000146,000
1541H 181,000164,000
4340228,000210,000

Note: OEM axles are made from 1040 or 1050 steel. Tensile Strength refers to the point at which the material ruptures. Yield Strength refers to the point where the material takes on a noticeable, permanent deformation.

USA Standard Gear Technical Support

If you are having trouble choosing the correct USA Standard Gear part, or experiencing issues during or after installation of this part, USA Standard Gear's technicians are available to help answer your questions.

Phone: 1-866-748-0902 (M-F 6am-4pm PST)



Attention California Customers - Not Applicable


USA STANDARD GEAR Warranty Information:
12 Months
Warranty Details