{"product_id":"piston-rings-husqvarna-346-345-242-oleomac-746-repl-oem-503-28-90-05-42mm-x-1-5","title":"PISTON RINGS HUSQVARNA 346 345 242 OLEOMAC 746 REPL OEM 503 28 90-05 42mm X 1.5","description":"\u003ch2\u003ePiston Rings for Husqvarna 346, 345, 242 and Oleomac 746\u003c\/h2\u003e\u003cp\u003eThese replacement piston rings, referencing OEM part number 503 28 90-05, are designed for 42mm x 1.5mm cylinders to restore compression in compatible chainsaws.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003ePiston rings for Husqvarna 346, 345, 242 and Oleomac 746 chainsaws are precision-engineered to seal the combustion chamber and transfer heat. These piston rings replace worn rings and help restore engine power and efficiency. The 42mm x 1.5mm size matches original specifications for reliable fitment.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManufactured from durable cast iron for long service life\u003c\/li\u003e\n\u003cli\u003ePrecision-ground to exact 42mm x 1.5mm dimensions\u003c\/li\u003e\n\u003cli\u003eRapid break-in design reduces cylinder scoring\u003c\/li\u003e\n\u003cli\u003eResistant to high temperatures and pressure in two-stroke engines\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM 503 28 90-05\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Husqvarna 346\u003c\/li\u003e\n\u003cli\u003efor Husqvarna 345\u003c\/li\u003e\n\u003cli\u003efor Husqvarna 242\u003c\/li\u003e\n\u003cli\u003efor Oleomac 746\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine rebuilds for chainsaws and power equipment\u003c\/li\u003e\n\u003cli\u003eRestores compression after ring wear\u003c\/li\u003e\n\u003cli\u003eReplaces damaged or broken piston rings\u003c\/li\u003e\n\u003cli\u003eUsed in routine top-end overhaul\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e503 28 90-05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e42mm x 1.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will these piston rings fit other chainsaw brands? \u003cstrong\u003eA:\u003c\/strong\u003e These are specifically designed for the listed Husqvarna and Oleomac models; always verify bore diameter and ring thickness before purchasing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to replace other parts when installing new rings? \u003cstrong\u003eA:\u003c\/strong\u003e It is recommended to inspect the cylinder for scoring and replace the piston if worn, and use a new cylinder gasket set for a proper seal.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":45216519159894,"sku":"ZZ3C00022","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_9ee4636a-21a4-4512-83d9-2758a0c40ede.jpg?v=1782823178","url":"https:\/\/www.solidspare.com\/products\/piston-rings-husqvarna-346-345-242-oleomac-746-repl-oem-503-28-90-05-42mm-x-1-5","provider":"Solid Spare","version":"1.0","type":"link"}