We are a MJ Heavy Duty Parts LLC, a small town, family owned truck and trailer parts supplier with the experience to serve our customers the right way. We pride ourselves on giving you the right parts, when you need them, and at the right price. We’ve aligned ourselves with companies who share the same values we do. Quality, accuracy, timeliness, value and communication. We serve customers from all over the USA, from owner/operators to Multi-National fleets, and we promise to always treat you like you’re our only customer.