PAI Industries, Inc.

Manufacturing in the United States Since 1973.

PAI Industries manufactures and distributes quality service parts to the heavy-duty truck industry. For over 40 years we've been supplying distributors throughout the world. PAI owes its remarkable success to its dedicated and knowledgeable employees. With decades of experience designing and field-testing products, both our Engineering and Sales Staff are available to answer your most challenging technical questions. PAI's commitment to its customers is evidenced by maintaining the highest levels of quality for the products and services we provide. Quality, continual improvement, and customer satisfaction are the personal responsibility of every PAI employee.

PAI Product Design Engineering

PAI Industries has complete design and manufacturing engineering capabilities. Our engineering efforts are focused on developing parts with equal and better performance than original equipment parts through our in-depth analysis of part design, materials, simulations, laboratory and field testing, and customer feedback.


We are proud to be US manufacturers. The PAI Manufacturing facility covers over 54,000 sq. ft. and is equipped with state-of-the-art machinery as well as highly skilled technicians with years of knowledge and experience. PAI has specialized in the manufacturing of gears for over 40 years. We use the latest gear cutting machines supported by robotic automation and computer controlled operation for fast, efficient, and consistent output. Gear geometry and data are obtained by Gleason Metrology solutions to ensure perfect dimensional input/output results. The PAI Gleason - M&M Precision System is annually calibrated to ISO/IEC 17025 American Association Laboratory Accreditation.


PAI's technicians assemble and test many parts including water pumps, synchronizers, and clutches among others, to ensure proper fit, finish, and function.

product testing / quality assurance

We analyze the performance and quality of all our parts through a variety of laboratory and real-world test as well as virtual simulations, 3D modeling and in-house Dynamometer Testing. Additionally, 100% testing and inspection is performed for every Water Pump, Oil Pump, Synchronizer, Gear, and Cylinder-Head before parts are packaged and ready for sale.

PAI Warranty

PAI Industries truck part brands are broken down into three (3) categories, High Performance, Genuine PAI and Excel to better serve our vast array of customers. PAI High Performance®, our most recent addition, is our premium line comprised of special materials, finishes and treatments to provide ground-breaking performance and longer part life, and is backed by our extended 3-Year Unlimited Mileage Warranty. Genuine PAI® is our most recognized and popular brand worldwide and comes equipped with our 2-Year Unlimited Mileage Warranty. Lastly, our Excel® Brand serves as our most economical solution without compromising quality, and it comes with our 1-Year Unlimited Mileage Warranty.

ISO 9001: 2015 certified

We work hard to assure compliance to the latest Quality Management System. After an outstanding effort from our team, we are proud to announce that we have successfully transitioned from ISO 9001:2008 to ISO 9001:2015 without any non-conformance. PAI Industries, Inc. has been certified beginning with 9001:2000 revision, later moving to the 9001:2008 and into the 9001:2015. We believes the implementation of the new revisions reiterates our commitment to our customers.


At PAI, we are raising the bar in gear innovation, production, education and manufacturing. We are proud to announce our membership in the American Gear Manufacturing Association (AGMA.)