So if I understand you correctly, order a BAR and chain replacement based on the nomenclature stamped on my existing bar, for a perfect fit? My 20" bar lists .325 80 dl and 1.3 mm. I guess the 1.3 mm is the gauge???
This might not be the correct forum but I thought I would start here. I have an older Poulan 2375 that was pretty simply to replace bars and chains. There didn't seem to be options for sprocket, bar or chain DLs. I was trying to buy an extra chain and bar for my new 450 but I ran into too many...