Ranked 1st in our list of recommended seals and sells for $189.99 (as of 12/07/2018 21:13 PDT details ) , more than 100% of the CorkSport Mazda Performance GEN-6-991-10 reviews are positive. With features such as material reliable beryllium copper cups enhances proper crush sealing. and superior design the groove and flared lip design allows the seal to crush into the cylinder head utilizing the oem sealing location in addition the side for superior sealing performance., it is indeed our top pick among seals.