Lower Graywerks Engine Oil Pan by ATP®. ATP Graywerks Oil Pans are a high quality OE replacement alternative. All pans are developed to originally specified designs, with oil capacity and baffles as required by the application. The parts are manufactured with heavy gauge materials and originally painted parts are powdercoated, providing a durable and long lasting replacement. Each pan includes a replacement drain plug in case old one is stripped or damaged. ATP Oil Pans are backed by a Limited Lifetime Warranty.