Sierra 18-3982 Standard Piston Rings For Mercury OutboardsSierra high-quality engine parts are designed to meet OEM specifications. 18-3982 Piston Rings are for Mercury and Mariner Crossflow and Inline Outboard engines Bore Size: 3.500 / Standard; Interchangeable with: GLM; 14940; Mallory; 9-54225; Mercury Marine; 39-822321A12; 39-822321A8; 39-824905A12; Applications:Crossflow: 75 - 125 3-4 Cyl; 135-175 V-6; Inline: 75 (3 cyl.) D283222 & UP; 80 Jet D283222 & UP; 90 (3 cyl.) D283222 & UP; 100 (4 cyl) D283222 & UP; 115 (4 cyl) D283222 & UP; V-140 JET V-6 D082000 G960499; V-140 JET V-6 G960500 UP; V-150 EFI XR6 MAGIII V-6 D082000 G960499; V-175 V-6 D082000 G960499; V-175 V-6 G960500 & UP; V-175 I XRI EF V-6 D000750 D081999; V-175 XRI EFI V-6 D000750 D081999; V-175 XRI EFI V-6 D082000 G303045; V-175 V-6 G303046 & UP; V-200 (2.5L) (w/ rod #644-818141) V-6 C291520 D081999; V-200 (2.5L) V-6 D082000 & UP; V-200 XRI EFI V-6 C291520 G960499;