Mack N/A, Engine Misc Parts, (NEW/OPENED BOX) Mack Diesel Engine Pipe Fitting 63AX3477 For Sale, Part # 63AX3477, 90 Degree Elbow, 3/4 INCH x 3/4 INCH, 1/2 INCH Tube Size, OEM Cross Reference Part # 20757390, 63AX3477, 6635-250388, Stock # 7148
