Sierra 18-3975 Piston Rings

Sierra 18-3918 Mercury Marine Piston Rings Sierra high-quality engine parts are designed to meet OEM specifications. Bore Size: 2.875 / Standard For 2 ring pistons Interchangeable...

Sierra 18-3979 Piston Rings Sierra replacement piston rings for Mercury Marine Outboards. Bore Size: 3.375 / Standard Interchangeable with: GLM 14910 Mallory 9-54229 Mercury...

Sierra 18-3911 Piston Rings Sierra replacement piston rings for Johnson/Evinrude Outboards. Bore Size: 3.020 .020 O.S. Interchangeable with: GLM 24260 Johnson/Evinrude...

Sierra 18-3923 Piston Rings Bore Size 3.125 / .030 Interchangeable with: GLM 14260 Mallory 9-54235 Mercury Marine 38-85636A4 Wiseco 3155KD