MAPCO Machine Shop
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MAPCO Machine Shop
Our parent company, Mertz Auto Parts Company, started over 50 years ago in Sunbury, PA, with a partnership between two cousins, Robert "Bob" and Richard "Dick" Mertz. Within several years a third partner, Roy "Check" Adams, was brought into the business. Over the years, the business evolved into two separate divisions-our used truck parts salvage yard and the addition of our machine shop, MAPCO.

We have been selling quality parts to our customers at our salvage yard for years. Our inventory focuses on hard-to-find parts but changes rapidly. Our salvage yard has many different manufacturers and configurations of trucks. We moved the business to its present location and expanded the services over the years to include driveshaft assembly, u-bolt bending, and hydraulic hose assembly.
Services
At MAPCO, we are not your average automotive machine shop. We offer unique services to our customers that you would be hard pressed to find at machine shops elsewhere. We provide our customer base with engine builds that include the agricultural, excavation, transportation, and racing industries. Our driveline services include assembly and repair of steel and aluminum driveshafts.
At MAPCO Machine Shop, our engine builders have over 75 years of combined experience with engine machining and building. Our custom engine builds cover many different configurations ranging from LS engines, Ultra4 off-road racing, tractor pulling, circle track racing, drag racing, custom restorations, and many, many, more.
Our driveline technician has over 25 years of experience with driveline services. At MAPCO, we can assemble and repair driveshafts from UTV shafts all the way up to and including large truck shafts. Our balancing services range from single shafts up to three-piece shafts. We can assemble driveshafts with steel, aluminum, and carbon fiber material.
Our U-bolt bending process is quick and can be completed while you wait in our waiting area. The dies for our bender include square, half moon, full round, and other configurations. We stock steel for U-bolts from 3/8" up to 1" diameter. These U-bolts can be custom made for axles from 2" up to 6" in width.
Reviews (3)
Vernon Weaver
Vernon Weaver
Nov 27, 2021
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Good service, Mapco fixed a drive shaft for a dump truck, I dropped the shaft off one day and they called the next day with it fixed. If you need a drive shaft fixed check with Mapco!
Ron Jon
Ron Jon
Aug 15, 2021
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Needed a driveshaft repaired that sheared off. They told me it would be at least a week but they hustled and got it done in 3 days. Shaft fit perfectly with no vibrations.
Bearclaw Chris Lapp
Bearclaw Chris Lapp
Feb 22, 2021
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Had them shorten a driveshaft for a truck project, when I talked to them about an estimate they said it would be over two weeks, but I got a call the next day they said it was done. Its a bit of a hike for me to get there but its well worth the trip. They even sanded it and painted it for me, which I did not expect, all for like 110 bucks. I will definitly be giving them more buisness in the future. Only reason for the 4 stars was I didnt have a mask and they were pretty rude about it, made me stand outside on a pretty cold day while waiting for the clerk to get the measurements for the driveshaft