If you’re in need of 74309 or 540 Series, the team at ASAP AOG can help you with your search. We carry such items as Bearing (18N19391)., Lycoming, and more from reliable manufacturers like Lycoming. We’re the leaders in overhaul replacement parts, and thanks to our accreditations (ISO 9001:2015 certified and FAA AC 00-56B), we have developed a loyal following with our customers. We have a dedicated account manager per location that would be more than happy to walk you through our parts acquisition process. Contact us now for an immediate quote for 74309.