Air Compressor Ring Set Use with DPA-4372 Piston STD 5 Rings Rings for 2 Pistons Tu-Flo 501 Compressor Application Part number: DRS-4312-STD OE MFG: MACK OEM Reference: 745-106105 Cross Reference: MACK : 745-106105; NAVISTAR : 1660320C91; OTHER : 106105, PBD-171 | PAI : 4312G-STD Product Class: Air Compressors & Parts The PAI DRS-4312-STD air compressor ring set is specified for use with the DPA-4372 standard piston, with five rings for two pistons in a Tu-Flo 501 compressor application. As heavy duty diesel truck parts, air compressor rings seal the piston within the cylinder so the compressor can build and route compressed air for vehicle systems. The standard configuration and stated piston and compressor references help distinguish this ring set from other compressor repair components. MACK lists 745-106105 as the OEM reference; additional cross-references are NAVISTAR 1660320C91 and 106105.
