Heavy Duty Truck Parts and Expert Technical Advice - Thats the Power Train Advantage. For all your drivetrain and wheel end needs, Power Train offers over 200 product lines from names you know like Eaton, Meritor, Spicer, and Stemco. Power Train rebuilds manual transmissions, differentials, power steering gears, hydraulic components, and transfer cases in-house. Power Train's Lebanon, IN facility is an Allison Authorized Dealer. Our repair or exchange options give our customers choices when it comes to fleet maintenance. Power Train is also a leader in truck repair service. We have more than 60 bays staffed with trained technicians to diagnose and correct your truck's issue. As a family-owned company, we value your business. Thank you for visiting our website.