We will be closed for vacation from June 27 - July 6. Any orders placed during this time will ship on Monday July 7. Thank You.

The Gear Box is your one stop shop for all manual and automatic transmission and rear end parts. We have parts for  Borg Warner / Tremec T56 Transmissions, T5 world class and non world class, T45, T10, Super T10, Muncie M20, M21, M22, 3550, TKO and more!

We carry a complete line of the best quality parts available, including Tremec / Borg Warner, Richmond and Spicer.

We have over 30 years experience in the transmission business and have rebuilt 1000's of transmissions. We specialize in all types of transmissions.

If you're looking for parts, a rebuilt transmission or you need an overhaul on your transmission, we provide the best quality service and parts. If you don't see what you need on this site, please feel free to email us or call 734-793-0727. 

We are also sellers on Ebay. Check out our reputation and buy with confidence!