One approach to get a warranty is to buy a secondhand transmission from a salvage yard or a private seller. Many salvage yards, as well as many individual merchants, offer guarantees on their used parts. Before you buy something, check the warranty's terms and conditions to see what's covered and what isn't. Another approach is to find for a used transmission that still has the manufacturer's warranty. This can be accomplished by looking at the car record sheet or contacting the dealership where it was first acquired. Make sure you get all of the details in writing before you buy it. Finally, a warranty from a third-party company may be available. This guarantee is applicable to both used and new transmissions. Always examine the terms and conditions of any warranty you buy from a third-party company to make sure it covers everything you need.