42 and numerically higher ratios
Chevrolet Silverado 1500 (1999-2000)
Chevrolet Silverado 2500 (2000-2004)
Ford Explorer (1991 - 2001)
Pinion Spline: 31 or 37
NP136, NP236, NP246, NP249, NP261 & NP263 Transfer Case Oil Pump Gear Packages - Ford 9.75” Rear 1997-1999.5 42 and numerically higher ratiosTransfer Case Parts by USA Standard Gear Description NP136 , NP236 , NP246 , NP249 , NP261 & NP263 Transfer Case Oil Pump Manufacturers Info USA Standard Gear USA Standard Gear sets the standard for quality parts at affordable pricing. As a brand, USA Standard encompasses ring & pinions, axles, driveshafts, transmission and transfer case components, and installation kits, as well as the popular Spartan Locker the toughest lunchbox locker on the