DOP55061HU66 Husqvarna 66 Chainsaw Tune Up Kit No. 501-80-71-05. This is a quality aftermarket tune up kit. This kit replaces Husqvarna Chainsaw part numbers,
Air Filter 501-80-71-05, (501 80 71-05, 501807105)
Fuel Filter 503-44-32-01, (503 44 32-01, 503443201),
Spark Plug WSR6F, and
2.6 Ounces of 50:1 Stamix Oil.
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