Spectra Premium Spectra Engine Oil Pan GMP59A Unit is designed to Original Equipment (OE) fit, form and function requirements accomplished by leveraging our OE expertise Durable powder coating applied to exterior of oil pan for a long lasting rust free unit Washed and then sealed with an anti-corrosive spray on the interior for a rust free unit at installation Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed Engineered to stringent tolerances to match the Original Equipment (OE) part it's designed to replace