Sierra 18-3911 Piston Ring Set .020 Oversize for Johnson/Evinrude Outboards

The Sierra 18-3911 is a premium replacement piston ring set designed specifically for Johnson/Evinrude outboard motors. These rings are engineered to meet or exceed original equipment specifications, providing reliable performance and durability in the harsh marine environment.

Key Specifications:

• Bore Size: 3.020 inches (.020 oversize)
• Direct replacement for worn or damaged piston rings
• Precision-manufactured for proper sealing and compression
• Compatible with multiple Johnson/Evinrude 2-cylinder and 3-cylinder models

Application Coverage:

• Johnson/Evinrude 18 Jet, 20, 25, 28, 30, 35 HP (2-cylinder models with 3.0" bore)
• Johnson/Evinrude 40, 48, 49 CID, 50, 55, 60, 70, 75 HP (3-cylinder models with 3.0" bore)
• Model years ranging from early 1970s through late 1990s

Interchangeable Part Numbers:

• GLM 24260
• Johnson/Evinrude OEM equivalent

Sierra Marine is a trusted name in marine engine parts, supplying OEM engine manufacturers and boat builders with quality replacement components. Each Sierra product is engineered to deliver dependable performance and withstand the demanding conditions of marine applications.

Note: This is a .020 oversize ring set intended for engines that have been bored .020 over standard. Verify your engine's bore size and specifications before ordering to ensure proper fitment.