Richmond Ring & Pinion Set - 4.11 Ratio, 37-9 Teeth, Ford 9" H770001L -12 AN male thread to

-12 AN male thread to screw directly into the breather bung on Peterson dry sump tanks

15-3/4 x 16-3/4 in

high gas pressure design for the utmost in consistent fade-free performance and long life

Above this RPM

Sierra 3500 HD 2010-2007

Richmond Ring & Pinion Set - 4.11 Ratio, 37-9 Teeth, Ford 9" H770001L -12 AN male thread toRICHMOND is the leading manufacturer of professional quality, hi performance ring and pinion sets. For over 80 years, the Double Diamond has signified the highest quality gears in the racing industry! Richmond Gear is famed for their tough and reliable ring and pinion sets. That same level of reliability and precision is available in their other driveline products, including differentials, racing Transmissions, driveshaft components, and more.