Part number: 320013 OE MFG: CATERPILLAR OEM Reference: 7E7740 Cross Reference: CATERPILLAR : 0R2902, 0R8172, 7E7740, 1N2995; MACK : 745-103274; NAVISTAR : ZZEL13200, ZZEL13200X, BX103167, BX103274X; VOLVO : MIDEL13200X; PACCAR : 103274BXR; OTHER : 107509, 107509X, 103274, 103274X, 103167, 107535, 108209, EL13200, EL13200X, R955103274, R955103274X, 170.AC103274, 170AC103274 Product Class: Air Compressors & Parts The PAI 320013 is an air compressor identified for Caterpillar applications by OEM reference 7E7740. Air compressors are heavy duty diesel truck parts that generate compressed air for systems such as braking and other vehicle controls, making the component type part of the truck's pneumatic operating system. Caterpillar cross-references include 0R2902 and 0R8172.