Bulk Bosch Injector Upper Seal O-Ring (100 Pack)
Bulk Pack Contains (100) 3-108 O-Rings
Universal Bosch O-Ring
.301 ID , .140 THK
This is the 2nd most common used “14mm” or “American” O-ring That fits most Injectors both top and bottom. It Should be the most commonly used as it is the ACTUAL O-ring, however it is slightly more expensive and can be interchanged with the less expensive 3-100 O-Ring.