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  1. #1

    GP800 Oil and Fuel Line Sizes ??

    Looking to replace my oil and fuel lines on my 1998 GP800. Look like 5mm, can anyone confirm off the top of their head? Any good resources for fuel and oil lines? Looking for clear. Thanks!

  2. #2
    redneck71's Avatar
    Join Date
    Sep 2011
    middletown DE
    I used tygon tubing from NAPA or McMASTER Carr and metal backed ties,the 5mm crosses over to 3/16=4.7 and 13/64=5.1,McMASTER Carr might have meteric fuel line


    2000 xl800
    2000 gp800

  3. #3
    silvercrxsir's Avatar
    Join Date
    Sep 2011
    Its 5mm,I ran into this prob a month ago where everyone said to use 1/4" and I kept getting leaks and had difficulties finding clamps ,so I ended up using 3/16 and haven't had a prob yet

  4. #4
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Madison, WI, USA
    And the oil lines are 3 or 3.5mm if I remember correctly. most common size you'll be able to find is 1/8"

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