Industrial R1021 Air Compressor Piston Pin Assembly

Champion R1021 piston pin (0.8125 in diameter x 2.125 in long) is an OEM replacement part for low-pressure piston assemblies in Champion air compressors, providing a precise connection between the piston and connecting rod. The R1021 size is listed for PL15/PL30/R10/R15/R30/RV15/RV30 models and is used across Champion and Speedaire configurations, including VR10–12 series, according to supplier listings and maintenance manuals. This piston pin is cataloged as an OEM Champion part and is designed to fit the piston kits used in these platforms, helping restore proper alignment and operation after wear. Dimensions are 0.8125 inches in diameter and 2.125 inches in length, and the part is widely available as R1021 piston pin from multiple retailers.