This fits your .
3/8" flare x 1/8" FPT. Yellow brass. Used with brass, copper, aluminum, and steel hydraulic tubing that can be flared. Used as connections for natural gas, air, petroleum and fuel oil. Use with higher pressure than compression fitting. This product contains less than 0.25% weighted average lead content on wetted surfaces. . Bulk.
Jmf Flare Adapter 3/8 " Flare X 1/8 " Fpt Yellow Brass Bulk < 0.25 % Lead - B00CGSIZRO