M&H is a family-owned and operated full-service repair shop located in Phoenixville, PA, offering a variety of services including general repair, custom exhaust products, transmission repairs, state inspections and emissions, and much more. Please visit our services page to find out everything we can do for you and your car. M&H caters to every customer's budget needs, offering high quality Jasper transmissions and motors, a discount line of parts, and also hi-performance accessories. M&H is proud to be the preferred Jasper installer of Chester County.

All M&H technicians are certified by Automotive Service Excellence (ASE). Marshall and Eric Seigle are ASE advanced level L1 Mastertechs©. 

M&H Transmissions started in 1991 in a two-bay shop in Spring City. Owner Marshall Seigle founded the business, which originally specialized in transmission rebuilds and repairs. After high demand from loyal customers, M&H began to do general repairs. Sandy Seigle then joined the staff, giving customers even more efficient and personalized care.

In 1996, M&H moved to the 11-bay facility on Route 23 in Phoenixville, where it remains today. In 2004, Eric Seigle came on board, furthering the family aspect of the business. In 2006, a Blue Flame Muffler Center was added to M&H. While the business continues to expand its services and grow, one thing will never change. M&H will keep its customers and their cars happy for years to come.