This muffler will increase cutting speed and help keep the engine cooler than the OEM muffler. Muffler contains no spark arrestors. Rubber plugs are included to close ports when saw is not running.
If your Jonsered saw uses the same muffler as Husqvarna 372XP, then this muffler will work with your saw. Good for stratified and non stratified engines.
I have sold hundreds of these mufflers in my 372XP listing.
Exhaust ports are 5/8" inside diameter. I offer this very same muffler with bigger 3/4" inside diameter ports also.
The exhaust ports direct hot gases and fumes in a safe direction to protect the operator.
I ship USPS Priority Mail. No returns.
International shipping to many countries.
I have been producing and selling performance based high flow chainsaw mufflers since 2018.
If any of MY mufflers fail due to my workmanship I will repair or replace the muffler free of charge to the original purchaser. Buyer pays for return shipping only.
Please see my other items.
Thank you for your interest.