Account Login TOLL FREE 844-446-7388 Español ABOUT US CONTACT US PRODUCTS Follow us on HOME QUALITY Quality Control The quality of our parts is the most crucial element of our success. We engineer and rigorously test all NewStar Parts to meet the material specifications, dimensions, functionality and longevity of OEM parts and components. In fact, our warranty meets or exceeds the OEMs’. S&S’s Quality Control Laboratory (QCL), located in Schaumburg, Illinois, contains the most advanced equipment and technology available to ensure that NewStar gearing, airbrake, chassis and power steering components meet the industry's most stringent quality standards. ISO Certification S&S Truck Parts, LLC Schaumburg Location is certified as an ISO 9001:2015 organization. The certification is provided by Perry Johnson Registrars (PJR).. The certification of compliance with ISO 9001:2015 recognizes that the policies, practices and procedures of our company ensure consistent quality in the product and services we provide our clients. With this certification, our clients can be confident that S&S Truck Parts, LLC is dedicated to maintaining the highest efficiency and responsiveness in achieving our ultimate goal – guaranteed client satisfaction. The following represents a sample of our state-of-the-art testing equipment: KLINGELNBERG-HOFLER CNC (COMPUTER NUMERIC CONTROLLED) Checks all gear tooth dimensions to ensure teeth are made correctly STARRETT CMM (COORDINATE MEASURING MACHINE) For checking lengths, locations, concentricity of diameters, flatness and more... STARRETT CNC OPTICAL COMPARATOR For visual checks of forms, radius, lengths, heights and more... MITUTOYO HR-500 ROCKWELL HARDNESS Measures Rockwell hardness of various metals and other materials in thirty different hardness scales AIR COMPRESSOR TEST BENCH Tests the compressor unloader functionality and checks for proper air pressure buildup, oil and coolant pressures, and system leakage. E6 VALVE TESTER Checks the supply pressure for leaks and to ensure the valve releases at the proper pressure. S&S Truck Parts, LLC., the parent company of Newstar, supplies parts & components for medium & heavy duty applications. Exceeding customers’ expectations, products are vigorously tested in house by engineers & skilled technicians in an unsurpassed quality control laboratory. Superior customer service & support set S&S apart from the rest. Customer Service Contact us Company Info About the company History Quality Careers Distribution Network Warranty and ReturnsDistribution NetworkTerms and ConditionsPrivacy