eMagTech 1 Set 46 mm Piston Ring Pin Kit 4116 020 1215 Compatible with Stihl FS550 FS420 FS420L F550L

46 mm piston kit compatible with Stihl FS550 FS420 FS420L F550L brushcutter engines, matched to the 46 mm bore to restore compression, improve starting, and support routine service after heavy seasonal use. OE 4116 020 1215 verify this number and the 46 mm diameter before purchase to match your cylinder. The set replaces worn piston rings and pin, helping address power loss, rough idle, and hard starting. Brushcutter repair kit includes 1 piston, 1 piston pin, 2 rings, 2 circlips. Aluminum alloy piston with steel pin and rings aims for consistent sealing and smooth travel in two stroke air cooled engines. Engine performance restoration improves compression, cold and hot starts, throttle response, and cutting efficiency. Suitable for replacing scored pistons or stuck rings from lean mix or extended storage. Field service application for landscaping crews, farm and ranch upkeep, roadside vegetation control, and home acreage cleanup. Straightforward installation with basic hand tools and standard workshop steps., Manufacturer: eMagTech