1986 Chevrolet G20 Ring and Pinion Set RWD - 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 1986 Chevrolet G20 Ring and Pinion Set RWD - 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. 1986 Chevrolet G20 Ring and Pinion Set comes new OEM 1986 Chevrolet G20 Ring and Pinion Set aftermarket new 1986 Chevrolet G20 Ring and Pinion Set of remanufactured 1986 Chevrolet G20 Ring and Pinion Set RWD - 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.