This fuel tank fits the first series GS Paralever bikes only (not Paris Dakar bikes!), and was an option for the R80GS Basic. It uses the earlier type filler cap as per TAA53817, and is no longer available from BMW.
Please note, the price shown is for a fuel tank in good, undamaged condition, both internally and externally. Tanks with damage and/or corrosion will be cheaper; please enquire.