USA Standard Gear Ring & Pinion Gear Set - GM 8.5" - 4.11 Ratio 121003 50 Female O-Ring to 6

50 Female O-Ring to 6 AN Male

They now offer it in other pans also

Tire Siper

93 mm Denso Alternators

- Stock Collector - Shortie Style

USA Standard Gear Ring & Pinion Gear Set - GM 8.5" - 4.11 Ratio 121003 50 Female O-Ring to 6USA Standard Gear Ring & Pinion gear set for GM 8. 5" in a 4. 11 ratio USA standard Ring & Pinion gear set for GM 8. 5" in a 4. 11 ratioUSA Standard Gear sets the standard for quality OE replacement parts at affordable prices. USA Standards provides the widest selection of drivetrain replacement parts on the market, including ring & pinions, axles, Perfect Fit driveshafts, Transmission and transfer case components, and installation kits as well as the