This listing is for a set of Harley Davidson Milwaukee 8 M8 Oil Cooled Cylinder Heads, part numbers 16500404 and 16500392. These heads are designed for use on street motorcycles with 4-stroke engines and are made of aluminum. They have a mileage of 13000 miles and are not vintage or performance parts. The brand of these cylinder heads is Harley Davidson and they are OE/OEM parts. They are perfect for those looking to replace their current heads or for collectors of Harley Davidson parts. Don't miss out on the opportunity to add these high-quality parts to your collection! This item is oily did not clean Will ship USPS Ground Advantage, UPS Ground or FedEx Ground Shipping to lower 48 states only please Please make sure this fits before ordering This 114 m8 parts were removed to upgrade to 131 m8