3.73 Ratio Differential Ring and Pinion for 8.875 (Inch) (12 Bolt)


Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer our ring and pinions for easy setup, superior strength, quality, and our vast ratio selection. Motive Gear produces the industry’s widest range of OEM replacement ring and pinions. Engineered to the highest standards, every Motive Gear product goes through rigid quality control processes in our in-house lab. In combination with Motive Gear’s performance and axle divisions: Motive Gear Performance and TEN Factory, there simply isn’t a better value in drivetrain components.

AM20-373 Application Notes

  • For AMC 20
  • 3.73 Ratio
  • 3.08 Ratio Carrier and Higher


1 Year or 50,000 Miles

AM20-373 Specifications

Cover Bolt Quantity 12
Differential Carrier Break 3.08 and Higher
Differential Case Design Type AMC 20
Pinion Gear Tooth Quantity 11
Pinion Shaft Diameter 1.625 (Inch)
Pinion Spline Count 28
Ring & Pinion Gear Ratio 3.73
Ring Gear Bolt Quantity 8
Ring Gear Diameter 8.875 (Inch)
Ring Gear Material 8620 Steel
Ring Gear Rotation Standard
Ring Gear Tooth Quantity 41
Taxonomy A Differential LD
Taxonomy B Ring and Pinion
Taxonomy C AMC 20
Taxonomy D Both
Where to buy

Vehicle Applications

  • 1992 – 2001 AM General Hummer
  • 2002 – 2004 Hummer H1
  • 2006 Hummer H1
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