2001 GMC C3500HD Ring and Pinion Set 4 X 2 - GM 10.5 in Rear - w/ 14 Bolt Cover - 5.13 Ratio - Thick Ring and Pinion Set - Fits 3 series 4.10 & Down Carrier - Rear guaranteed to replace your current 2001 GMC C3500HD Ring and Pinion Set 4 X 2 - GM 10.5 in Rear - w/ 14 Bolt Cover - 5.13 Ratio - Thick Ring and Pinion Set - Fits 3 series 4.10 & Down Carrier - Rear. 2001 GMC C3500HD Ring and Pinion Set comes new OEM 2001 GMC C3500HD Ring and Pinion Set aftermarket new 2001 GMC C3500HD Ring and Pinion Set of remanufactured 2001 GMC C3500HD Ring and Pinion Set 4 X 2 - GM 10.5 in Rear - w/ 14 Bolt Cover - 5.13 Ratio - Thick Ring and Pinion Set - Fits 3 series 4.10 & Down Carrier - Rear.