503 28 90 05 Piston Rings for Husqvarna 346 345 242 Oleomac 746 42mmx1.5

Product Overview

These piston rings are designed for Husqvarna 346, 345, 242 and Oleomac 746 chainsaw engines. The 42mm x 1.5mm size matches OEM specifications, ensuring proper compression and engine performance. Replacing worn piston rings is essential for restoring power and extending engine life.

Key Features & Performance

• Precision-ground 42mm outer diameter with 1.5mm thickness for exact fit
• Manufactured to OEM specifications for reliable performance
• Restores compression, reduces exhaust smoke, and improves fuel efficiency
• Direct replacement – no modification needed
• Compatible with multiple popular chainsaw models

Fitment & Compatibility

• Husqvarna 346
• Husqvarna 345
• Husqvarna 242
• Oleomac 746

Common Uses

• Rebuilding Husqvarna and Oleomac chainsaw engines
• Replacing rings during top-end overhaul
• Restoring performance in professional and homeowner saws

Technical Specifications

• Part Number(s): 503 28 90-05
• Size: 42mm x 1.5mm

Frequently Asked Questions

Q: Do these rings come in a set? A: Yes, this listing includes the necessary rings for one piston – typically one or two rings depending on engine design.

Q: Will these rings fit Husqvarna 350? A: No, these are specifically for 346/345/242 and Oleomac 746. Always confirm piston diameter before purchasing.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.