1999 Chevrolet Silverado Ring and Pinion Set K1500 - 4WD - GM 8.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 3.73 Ratio - Fits 3.42 and Up Carrier Case - Front guaranteed to replace your current 1999 Chevrolet Silverado Ring and Pinion Set K1500 - 4WD - GM 8.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 3.73 Ratio - Fits 3.42 and Up Carrier Case - Front. 1999 Chevrolet Silverado Ring and Pinion Set comes new OEM 1999 Chevrolet Silverado Ring and Pinion Set aftermarket new 1999 Chevrolet Silverado Ring and Pinion Set of remanufactured 1999 Chevrolet Silverado Ring and Pinion Set K1500 - 4WD - GM 8.25 in. Front - IFS - Reverse Rotation - Ring and Pinion Set - 3.73 Ratio - Fits 3.42 and Up Carrier Case - Front.