USA STANDARD GEAR
More Information for USA STANDARD GEAR ZGGM12T
{Alternate Inventory Numbers: GM12T-488, GM12T-411, GM12T-342, GM12T-411T, GM12T-373T, GM12T-456, GM12T-308, USA-24463, GM12T-373, GM12T-456T, ZGGM12T308, ZGGM12T342, ZGGM12T373, ZGGM12T373T, ZGGM12T411, ZGGM12T411T, ZGGM12T456, ZGGM12T456T, ZGGM12T488, USA24462 }
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USA STANDARD GEAR ZGGM12T  
Choose Gear Ratio Below
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Choose Gear Ratio:
  •  
  • 4.88 Gear Ratio ($233.79) Warehouse
  • 3.42 Gear Ratio ($239.79) Warehouse
  • 3.73 Thick Gear for 3.42 & Down Carriers ($239.79) Warehouse
  • 4.11 Gear Ratio ($239.79) Warehouse
  • 4.11 Thick Gear for 3.42 & Down Carriers ($239.79) Warehouse
  • 4.56 Gear Ratio ($239.79) Warehouse
  • 4.56 Thick Gear for 3.42 & Down Carriers (Only 1 Remaining) ($239.79) Warehouse
  • 3.73 Gear Ratio ($259.79) Warehouse
  • 3.08 Gear Ratio ($281.89) Warehouse
  • 5.13 Gear Ratio ($397.79) Warehouse
USA STANDARD GEAR ZGGM12Tclose
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USA STANDARD GEAR ZGGM12T Specifications
Axle TypeSemi Float
Cover Bolt Quantity12
Gear Ratio5.13
Mounting Hardware IncludedNo
Ring Gear Diam: 8.875"; Diff Cover Bolts: 12; Ring Gear Bolts: 12; Pinion Splines: 30
Features & Benefits:
  • Fits GM 12 bolt truck
  • 8.875" ring gear diameter
  • 30 spline pinion
  • 12 ring gear bolts
  • 3.08 ratio
  • 3.42 ratio
  • 3.73 ratio
  • 4.11 ratio
  • 4.56 ratio
  • 4.88 ratio
  • Thick gear for 3.42 and down carrier
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

OEM / Interchange Numbers: 10001420, 10001424, 10001431, 10004677, 10004680, 12BT308, 12BT342, 12BT373, 12BT373T, 12BT410, 12BT410T, 12BT456, 2023716, 6903001, GM12373, GM12BT456T

USA STANDARD GEAR Warranty Information:
12 Months
Warranty Details