So I needed new orings for my injectors and Subaru recomends replacing all 3 orings/insulators for all the 4 injectors when you take them out and put them in. They wanted $94.80 without tax for 12 pieces of rubber. I did not pay this and found all three in a injector seal kit at Checker for $3 a box. Just wanted to pass on the savings. The manufacture is Niehoff and part number 274751 They are exacly the same as subaru ones.