Soft tempered aluminum and copper drain plug crush washers designed to seal in fluids
Most OEMs recommend replacement at each oil or coolant change
PART #0920-0055 includes a set of 50 (25 copper/25 aluminum) of each of the following sizes: M6, M8, M10, M12, M14 and M10 banjo in a clear organizer; refills available for each size in bags of 10 or 50
Refill packs of 10 include five aluminum and five copper washers in listed size