THESE HAVE 1/4" BARBS , SAME AS THE STRAIGHT INLINE FILTER WE HAVE BEEN SELLING AND USING OURSELVES FOR YEARS WITH THE 3/16" (5.5MM) HONDA TYPE FUEL LINE..
IN OTHER WORDS I HAVE NOT FOUND ANY 3/16" (5.5MM) ID HOSE THAT WON'T STRETCH OVER THIS 1/4" BARB AND WORK JUST FINE.
UNLESS IT IS 25 YEARS OLD AND STIFF, IN WHICH CASE YOU SHOULD REPLACE IT ANYWAY...
