18-4626 - Piston 3.5 Inch 2704-826191T4 Standard
18-4626 Standard Piston Mercury 2704-826191T4
Please note: Sierra pistons 18-4626, 18-4627, and 18-4628 are nominally 3.5 inch diameter and oversized as indicated. Some of the Sierra catalog pages have an error indicating that these pistons are 3.375 inch diameter, they are actually 3.5 inch. Thanks.
Sierra Marine Piston-std. is equivalent to parts:
- 2704826191T 4 Mercury Marine
- 9-53250 Mallory Marine
Additional information about this part can be found on page(s) 347 of the Sierra Marine catalog.