Aftermarket Petcock and fuel line diameter
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Joined: Jan 2021
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From: Montreal
Aftermarket Petcock and fuel line diameter
Hi guys,
I just purchased an aftermarket Petcock for my 04 FXSTS. Its a bikers choice model. Upon receipt I noticed the fuel outlet appears to be a lot larger than my standard 1/4 ID fuel line.
alrhough it states its made for 1/4 hose I doubt it.
Can I manage to insert my 1/4 fuel hose onto what appears to be a 5/16 outlet or should I just look for another oem Petcock?
thanks for the advice
I just purchased an aftermarket Petcock for my 04 FXSTS. Its a bikers choice model. Upon receipt I noticed the fuel outlet appears to be a lot larger than my standard 1/4 ID fuel line.
alrhough it states its made for 1/4 hose I doubt it.
Can I manage to insert my 1/4 fuel hose onto what appears to be a 5/16 outlet or should I just look for another oem Petcock?
thanks for the advice
Road Warrior
Joined: Sep 2014
Posts: 1,871
Likes: 1,325
From: DeLand, Florida
Measure the hole, if it’s 1/4” shove it on. Use a little grease. If it’s really 5/16, you will have to find some rather soft 1/4” fuel line. The last I purchased was made for fuel injection and was very stiff.
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Joined: Jan 2021
Posts: 93
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From: Montreal
Im told that many aftermarket petcocks are fitted with an fuel outlet for a 5/16 fuel line. Im just wondering if anyone ever fitted it with a 1/4 fuel line and if its a recipe for disaster.
the fuel line hose soft enough to force in with grease or heat but wondering if there is a problem I am chasing somewhere down the line.
the fuel line hose soft enough to force in with grease or heat but wondering if there is a problem I am chasing somewhere down the line.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,113
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From: San Diego, CA
I’m told that many aftermarket petcocks are fitted with an fuel outlet for a 5/16” fuel line. I’m just wondering if anyone ever fitted it with a 1/4” fuel line and if it’s a recipe for disaster.
the fuel line hose soft enough to force in with grease or heat but wondering if there is a problem I am chasing somewhere down the line.
the fuel line hose soft enough to force in with grease or heat but wondering if there is a problem I am chasing somewhere down the line.
Depends on the quality of the hose you are using..... If it goes on without tearing or otherwise damaging the hose, I would probably work fine.... I'm sure it's done all the time...
I would use hot water to soften up the end of the hose, or a heat gun (hair dryer) on low...
I prefer to have things match up... I would use the proper size hose for the proper size fitting...
I've used two different Pingle fuel petcocks on two different carbed bikes.... I don't ever recall having an issue with the fuel hose going on or off...
Last edited by hattitude; Jan 16, 2022 at 02:13 PM.
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Joined: Jan 2021
Posts: 93
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From: Montreal
i did manage to fit in the 1/4 fuel line on the 5/16 Petcock but it looks awfully tight and Im scared with time it will tear.
thanks all for your feedback!
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Club Member
Joined: Sep 2010
Posts: 15,424
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From: Beyond Fucital
what is was trying to avoid is changing out the fuel inlet at the carb. But I think this might be the safer choice.
i did manage to fit in the 1/4 fuel line on the 5/16 Petcock but it looks awfully tight and Im scared with time it will tear.
thanks all for your feedback!
i did manage to fit in the 1/4 fuel line on the 5/16 Petcock but it looks awfully tight and Im scared with time it will tear.
thanks all for your feedback!
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Joined: Sep 2006
Posts: 3,713
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From: San Ramon, Ca
I just did a similar thing with a car. Edelbrock carbs are 3/8 Inl
The car is 5/16. I have an in line fltr. I had to run the 5/16 hose
on that 3/8 in & out fltr (Get the butter). It seems ok, but something to keep
an eye on. Tight fit.
I remember Pingle petcocks for the earlier Harley's were larger
than the stock carb. Same issue.
Had a Mikuni 40 on a 1200 Sportster. Wound up using the Pingle
because it was the same size.
The car is 5/16. I have an in line fltr. I had to run the 5/16 hose
on that 3/8 in & out fltr (Get the butter). It seems ok, but something to keep
an eye on. Tight fit.
I remember Pingle petcocks for the earlier Harley's were larger
than the stock carb. Same issue.
Had a Mikuni 40 on a 1200 Sportster. Wound up using the Pingle
because it was the same size.
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