New aftermarket fuel dampener part number 7139-159B. Part is made in Italy. We also have OEM available if you would prefer that but at a different price. We carry and stock almost all parts for these pump. If we don’t have it listed feel free to contact us at Badger Diesel and we can set up a listing for what you need. Since we are a full fuel injection shop we know everything about these pumps and can answer any questions you have.