NPR Pistons w/ Rings fit 06-20 Chevrolet Express Silverado GMC Savana Sierra 6.0 Size:Standard 4 Chain Guide Rails

4 Chain Guide Rails

2011-2016 GMC SAVANA 2500 6

1975-1992 FORD E-150 ECONOLINE 4

1989-1995 CHEVROLET G10 5

2010-2013 LEXUS RX450H 3

NPR Pistons w/ Rings fit 06-20 Chevrolet Express Silverado GMC Savana Sierra 6.0 Size:Standard 4 Chain Guide RailsNPR Pistons w Rings fit 06 20 Chevrolet Express Silverado GMC Savana Sierra 6. 0. A piston is a cylindrical piece of metal that moves up and down inside each cylinder, compressing the air fuel mixture and capturing the force created by the combustion process. This force is then transferred to the crankshaft, via the connecting rod. Symptoms of a Bad or Failing Piston include engine misfire, excessive oil consumption, knocking or slapping noise from