5.7OSXI, 5.7OSI, 5.7GXI, 5.7GI. In the event the of the item fail due to manufacturing defects during intended use, we will replace the part by free. Some products can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to California goverment website, you can search California P65Warnings.For replacements, please notice us within 60 days after you receiving the item. We will try our best to serve you better!