Mid Mountain is a Sparta, Tennessee buyer and seller of automotive cores. We specialize in supplying cores to the transmission rebuilding industry with a focus on transmission cores, torque converters, and hard parts.
Mid Mountain is one of the largest recyclers of transmissions and parts in the industry. We maintain an inventory of the most common transmissions in operation today.
We buy domestic and import automotive transmission cores from a vast array of transmission manufacturers.
MidMountain sells transmission cores and hard parts to rebuilders and companies all over the country and internationally at fair and affordable prices.
Our core supply service is dedicated to working with transmission industry professionals. We focus on supplying cores to transmission shops and transmission remanufacturers.

With a sales force of over 100 of the most experienced sales staff in the industry and 45 locations nationwide you only have one call for all your core and hard parts needs.
1-800-940-0197
It is not just business; it's relationships. Our customer's are not just people that we simply want to buy our products. Our customers are partners in our business. We are here to support your business.
Securing transmission cores are an important part of any transmission shop's business. At MidMountain, we pride ourselves on delivering the right cores on time. We stock and sell automatic transmission, manual transmission, standard transmission cores from both domestic and import transmission applications.
Chrysler A727, A904, 47RE, 48RE, A518, A618, 68RFE
Ford C6, AODE, 4R70W, E4OD, 4R100, 5R110, 6R80
GM Powerglide, TH400, 4L60E, 4L80E, 6L80, Allison 1000
Locating torque converter cores are an important part of any converter building business. Based in Tennessee, we strive to the deliver the correct cores on time throughout the United States. We stock and sell domestic and import converters that pair with the most popular transmissions on the road today.
Chrysler A727, A904, 47RE, 48RE, A518, A618, 68RFE
Ford C6, AODE, 4R70W, E4OD, 4R100, 5R110, 6R80
GM Powerglide, TH400, 4L60E, 4L80E, 6L80, Allison 1000
Our experienced team stocks and sells transmission hard parts for the most common GM, Ford, Chrysler and import transmissions on the road. Our extensive inventory consists of CVT pulleys, CVT belts, pumps, clutch drums, shafts, valvebodies, and more. Contact us today for more information.
Chrysler A727, A904, 47RE, 48RE, A518, A618, 68RFE
Ford C6, AODE, 4R70W, E4OD, 4R100, 5R110, 6R80
GM Powerglide, TH400, 4L60E, 4L80E, 6L80, Allison 1000