Piston Ring For Jonsered/Husqvarna Chainsaws - Fits Models 451 EV, 2045, 2145, CS 2147, RS 45

About This Product

Is your Jonsered or Husqvarna chainsaw losing compression, smoking too much, or just not cutting like it used to? A worn piston ring might be the culprit. This replacement piston ring is brand new, unused, and comes in its original packaging—exactly what you need for a rebuild. It fits a bunch of popular models including Jonsered 451 E EV, 2045, 2145, CS 2145 S, CS 2147, RS 44, RS 45, and compatible Husqvarna saws. The part number is 503 28 90-05, made in Italy to OEM standards, so you know it's quality. Installing a new ring can restore compression, improve performance, and extend the life of your chainsaw. Perfect for DIY repairs if you're comfortable taking apart the cylinder, or for small engine shops stocking common parts. Don't let a simple ring keep your saw out of action. Whether you're a professional logger, landscaper, or weekend woodcutter, keeping your equipment in top shape matters. This ring is durable, designed to withstand high heat and friction, and helps maintain proper seal in the cylinder. Before you consider buying a new saw, try replacing the piston ring—it's often an affordable fix that makes a huge difference. Get back to cutting with confidence and power. Your chainsaw will thank you!

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