Made in the USA! - Now shipping the new updated design Fits Cummins 5.9L (1988-2004) 12 valve engines Hastings Manufacturing Part Number : 2D5374 MAHLE#41940 FITS Cummins 1988-2004 12 valve 5.9l engines in Dodge Trucks and other industrial equipment SPECS : Standard Bore Diameter 102.00mm; Height: 3.00mm x 2.35mm x 4.00mm Ring Groove Widths / Materials : First Groove : / STAINLESS STEEL - NITRIDED Second Groove : / DUCTILE - CHROME Third Groove : / STAINLESS STEEL - NITRIDED