Piston, Rings and Connecting Rod

Engine pistons, piston rings, and connecting rods are vital components for the proper functioning of your Evinrude, Johnson, or OMC outboard motor. A damaged piston, worn rings, or a bent connecting rod can seriously compromise your engine's performance and reliability.

Replacing these components requires precision and the use of high-quality, ideally genuine, replacement parts to ensure perfect compatibility and long-lasting performance. Don't risk further damage to your engine with questionable aftermarket parts.

A common symptom of piston or ring problems is compression loss, which results in hard starting, reduced power, and increased fuel consumption. In these cases, it's crucial to act promptly to prevent more serious damage.

Attention Evinrude 737 Owners! Many searches focus on this specific Evinrude model. Be sure to verify the compatibility of the parts with your engine by consulting the original exploded diagrams or seeking advice from our team of experts.

The Nautica Basile Workshop Recommendation

• Genuine Parts: Always prioritize genuine Evinrude, Johnson, or OMC parts to ensure maximum reliability and longevity.


• Verify Compatibility: Before purchasing any parts, carefully verify compatibility with your engine's model and year.


• Overhaul Kits: Consider purchasing a complete overhaul kit, which includes pistons, rings, connecting rods, and gaskets, for a thorough and lasting engine rebuild.


• Torque Specifications: Strictly adhere to the manufacturer's recommended torque specifications to avoid damage to the components.

If you also need to replace the water pump impeller, check out the section dedicated to Evinrude Johnson impellers.

Frequently Asked Questions

Are these pistons suitable for my Evinrude 737?

The compatibility of the pistons with your Evinrude 737 depends on the specific model and year of manufacture. We recommend that you check the part number on your engine's exploded diagram or contact us providing the exact model for a precise verification.

What are the symptoms of worn piston rings?

The most common symptoms of worn piston rings include hard starting, loss of compression, excessive exhaust smoke (especially bluish in color), reduced power, and increased oil consumption.

How can I check the condition of the connecting rods?

Checking the condition of the connecting rods requires disassembly of the engine. A visual inspection can reveal any deformations or cracks. It is also important to check the connecting rod bearing clearance.

What does "genuine parts" mean?

Genuine parts are manufactured directly by the engine manufacturer (in this case Evinrude, Johnson, or OMC) and guarantee maximum compatibility and quality. They are made with the same materials and follow the same production standards as the components originally fitted to the engine.

Are these pistons suitable for my Evinrude 737?

The compatibility of the pistons with your Evinrude 737 depends on the specific model and year of manufacture. We recommend that you check the part number on your engine's exploded diagram or contact us providing the exact model for a precise verification.

What are the symptoms of worn piston rings?

The most common symptoms of worn piston rings include hard starting, loss of compression, excessive exhaust smoke (especially bluish in color), reduced power, and increased oil consumption.

How can I check the condition of the connecting rods?

Checking the condition of the connecting rods requires disassembly of the engine. A visual inspection can reveal any deformations or cracks. It is also important to check the connecting rod bearing clearance.

What does "genuine parts" mean?

Genuine parts are manufactured directly by the engine manufacturer (in this case Evinrude, Johnson, or OMC) and guarantee maximum compatibility and quality. They are made with the same materials and follow the same production standards as the components originally fitted to the engine.