2003 Chevrolet Avalanche 2500 Ring and Pinion Set RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear guaranteed to replace your current 2003 Chevrolet Avalanche 2500 Ring and Pinion Set RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear. 2003 Chevrolet Avalanche 2500 Ring and Pinion Set comes new OEM 2003 Chevrolet Avalanche 2500 Ring and Pinion Set aftermarket new 2003 Chevrolet Avalanche 2500 Ring and Pinion Set of remanufactured 2003 Chevrolet Avalanche 2500 Ring and Pinion Set RWD - GM 10.5 in Rear - w/ 14 Bolt Cover - 4.56 Ratio - Ring and Pinion Set - Fits 4 series 4.56 & Up Carrier - Rear.