18-3927 - Rings 39-813011A12
18-3927 Piston Ring Mercury 39-813011A12
Sierra 18-3927 is ONE PAIR OF RINGS ONLY as shown in the photo. Not the same quantity of rings as the Mercury 39-813011A12.
Sierra Marine Piston Rings Std (6) is equivalent to parts:
- 39813011A12 Mercury Marine
- 9-54216 Mallory Marine
Additional information about this part can be found on page(s) 349 of the Sierra Marine catalog.