Engine: Perkins. Fuel Filter - H: 72| O/D: 89| I/D: 19. Spin-On Oil Filter - H: 180| O/D: 92| Thread: 3/4 in - 16 UNF. Outer Air Filter - H: 347| O/D: 163| I/D: 91/BLANK. Inner Air Filter - H: 339| O/D: 93| I/D: 74/BLANK.
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