Just like everything sold in racing there is no warranty. The reason for this is we simply can’t control what happens beyond the factory. Many engines are modified for specific rule sets and therefore torque specs, clearances, and even aftermarket parts can negatively impact the life of our products. Many of the oils sold and that racers use were never intended nor designed to be ran in a combustion engine, let alone a racing engine. If you have an engine issue we would recommend working with the authorized Briggs Racing dealer you purchased the product from. If there is something that can be determined was a factory issue that lead to your issue we stand behind our products warranty or not. The key is to have that conversation and the dealer can contact us.