Need fuel tank for Ryobi string trimmer

Need fuel tank for Ryobi string trimmer. Trimmer is model # 2079r. Tank is part # 181774. Every where I check on internet shows not available. My tank has very thin hairline crack and leaks badly. Sears Parts direct shows cross over part # 791-181766 which I think is MTD. Sears also shows not available.

Any ideas sincerely appreciated.



Red Cox