Engineman.com delivers the highest quality engines and transmissions available. If warranty ever becomes an issue, we have the best hassle-free warranty in the industry. Most of our used engines carry a written 12 month, unlimited mileage warranty. Most all our transmissions carry a 6 month unlimited mileage warranty. Extended warranties are available up to 30 months at a very low cost, for most engines and transmissions. Engineman.com will warranty product if defect occurs or when excessive oil consumption occurs. To receive any warranty, Engineman.com asks that good common sense practices are followed during and after installation such as: