Design to increase horsepower and torque. For a 2002 GM trucks and SUVs 4.3/4.8/5.3/6.0/8.1 Good condition see pictures for condition of the item. If you have any questions or concerns feel free to reach out. We source our items from yard sales, flea markets, estate sales and storage units. All of our items have been photographed to show any issues with the items. But sometimes we may overlook or miss something. If you find An issue please bring it to our attention as the items we sell may be used or “New” but they have been loved before unless otherwise stated. Thank you for looking and have a blessed day.