Namura .040 Over Bore Piston Rings for Sea-Doo 580 1990-1996 77mm SEE LIST

.040 Over Bore Piston Rings for Sea-Doo

These .040 over bore piston rings seal the gap on 77mm oversize pistons for 580 engines for Sea-Doo.

Overview

The .040 over bore piston rings maintain pressure in engines that have undergone cylinder boring. These .040 over bore piston rings accommodate the increased diameter required after machining. They are essential for a reliable engine refresh.

Built For Performance

• Designed for .040 over bore specs
• Ensures proper oil control
• High heat endurance
• Engineered for marine environments

Specs At A Glance

Good To Know

Q: What is the bore size? A: These rings are for 77mm bore applications.

Q: Do I need to gap these? A: Always verify end gap measurements based on the engine manual specifications before final assembly.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.