If you’re in need of M4001 or 235 Series, the team at ASAP AOG can help you with your search. We carry such items as Slick 4-Cylinder Ignition Harness, O-235 & O-32, Lycoming, and more from reliable manufacturers like Slick Unison. 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 M4001.