Local auto shops
* AutoZone
* Advance Auto Parts
* O’Reilly Auto Parts
*NAPA Auto Parts
Online stores
*Amazon
* eBay
*RockAuto
*PartsGeek
*Summit Racing Equipment
Car disassembly
* Local car wreckers
*Car-Part.com
*LKQ Corporation
Dealer centers
* Dealership centers of your car brand
Gearbox Manufacturers
*Aisin
*BorgWarner
* Getrag
* Jatco
*ZF
Other sources
*Local transmission workshops
* Car repair shops
* Clubs and forums for car enthusiasts
* Online used parts marketplaces such as Craigslist or Facebook Marketplace