Suitable for the Husqvarna 365 chainsaw piston assembly, 48mm double ring piston, piston set, piston rings, piston pin, retaining rings and chainsaw accessories.

The piston assembly is the central moving part of a chainsaw engine. It moves back and forth within the cylinder, converting the thermal energy of fuel combustion into mechanical energy. If your Husqvarna 365 chainsaw is experiencing problems such as starting difficulties, loss of power, low cylinder pressure, excessive oil consumption, or unusual operating noises, the piston or piston rings are usually worn and need replacing. This product is specifically designed for the Husqvarna 365 chainsaw with a 48 mm cylinder bore and is precision-machined from high-quality materials. The piston body is made of a eutectic aluminum alloy, which offers a low coefficient of thermal expansion, excellent high-temperature stability, precise cylinder clearance, smooth running, and minimal wear. The double-ring design incorporates two piston rings: the first, a chrome-plated compression ring, provides excellent wear resistance and primarily ensures gas sealing; the second, an oil scraper ring, removes excess oil from the cylinder wall and reduces oil consumption. Both rings work together to ensure a perfect cylinder seal, sufficient pressure, and optimal performance. This complete kit includes a piston, two piston rings, a piston pin, and a circlip. All components undergo rigorous quality control to guarantee stability and reliability after installation. Replacing this piston kit will restore your chainsaw to full power, stable idling, smooth acceleration, and complete combustion. As a high-quality replacement part, this product offers a cost-effective repair solution and extends the life of your chainsaw. Before purchasing, please verify that your chainsaw is a Husqvarna 365 and has an original cylinder bore of 48 mm. Professional installation is recommended. The cylinder and housing must be thoroughly cleaned before installation to ensure optimal performance and maximum service life.