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Sourcewell Approved
JASPER Family of Companies




Jasper Holdings, Inc. has proudly partnered with Sourcewell, creating a convenient solution for procurement specialists to acquire a wide variety of automotive parts and power train components through the Jasper Family of Companies listed below.



Jasper Engines & Transmissions was founded in 1942 and today is the nation's largest mass remanufacturer of a diverse line of power train components. Annual production includes over 167,000 gas and diesel engines, transmissions, differentials, rear axle assemblies, air and fuel components, and marine products.  Call 800-827-7455 or visit


Weller Truck Parts became part of the JASPER family in 2014. Weller Truck Parts is well known for providing transmissions and differentials, along with steering gearboxes, to the medium and heavy-duty truck aftermarket. Call 800-872-6697 or go to


Diesel USA Group (formerly Diesel Injection Services, Inc.) was acquired in May of 2019 as a distribution, service, and repair company servicing air and fuel products for gas and diesel engines along with a variety of other complementary products.  Call 877-361-2531 or visit


Jasper Innovative Solutions (formerly Mac Motors) is an automotive parts components leader, offering both premium aftermarket and OEM replacement parts for fleet vehicles, as well as heavy-duty alternatives designed in-house. Jasper Innovative Solutions has been recognized as a premier supplier to the United States Postal Service through growth in product offerings, a commitment to quality assurance, and continued delivery excellence.  Call 800-752-1700 or go to