I recently purchased this hose, looks to be of good quality. Tygon sells it in various ID and OD sizes.....


https://www.amazon.com/Tygon-F-4040-Lubricant-Tubing-Length/dp/B000PHF06C/ref=sr_1_6?crid=2GRHTLAG074S8&keywords=tygon+fuel+line+1%2F8+id&qid=1643665264&sprefix=tygon+fuel+line%2Caps%2C402&sr=8-6