THESE  PARTS WILL FIT HT4100 4.1/4.5/4.9 Cadillac engines 1982-1995 Eldorado /Deville/Seville PART# 3521181 or PART# 1629927 THIS ITEM IS ONLY SOLD IN PAIRS ONLY.   BEFORE YOU ORDER PLEASE MAKE SURE THE PART FITS YOUR VEHICLE'S YEAR MAKE AND MODEL. THIS PART FITS ALL THE VEHICLES LISTED IN THE DESCRIPTION ABOVE. THE CUSTOMER IS RESPONSIBLE FOR ANY MISTAKES IN ORDERING THE WRONG PARTS SO PLEASE MAKE SURE TO CONTACT CADILLIAC G's  THROUGH  EMAIL AND WE WILL MAKE  SURE YOU ORDER THE RIGHT  PARTS FOR YOUR VEHICLE.