The Air Filter 6L-4714 Replacement OEM Part Number AF4178 PA1765 97100374 42595,Application For Atlas Copco PT1200; PT1200CD(D336 eng). PT900(D334 eng). PT900CD(D334 eng). Caterpillar 3412. 3412C. D346. D346. D348. D348. D349. D349. D379; D379A; D379B. D379A; D379B. D379B. D398; D398A