Fuel assembly line leak/replacement (02 SR5/4.7L)

Hoping you all can help. I'm new to the boards and a few months ago bought my Grandfather's 02 Tundra. I recently returned from vacation where the truck sat and it looks like a mouse or small rodent bit through one of my fuel lines underneath the truck. I read online that these tubes are manufactured with some amount of soy, so that draws rodents in? The truck starts, with a little hesitation, but sprays fuel out of the leak when running obviously. So it's been sitting since I got home, I noticed it a few days ago.


The pictures provided show the line assembly (3 tubes) that feed into the fuel tank. The middle one, that looks shiny and covered in gas has the small leak. The leak is circled in the pictures.
The additional pictures of the connections show both ends, one where it ties into the fuel tank with the red connector and then into the other part (fuel connection 1.jpg).

I've been researching online about what part number this is. P/N 77209-0C010 (picture attached) was my first inclination, but am unsure. P/N 77340-34010 looks like the whole assembly in my opinion. https://www.toyotapartsdeal.com/oem/toyota~valve~assy~fuel~cut~off~w~tube~77340-34010.html

Additionally, is the replacement of this tubing as easy as plug and play? It looks like both connectors just pop off and on, something an average skilled guy like myself could do?


Appreciate all of the help!

 

Just found your question, I'm a new member and have identical issue, can you let me know what the part number was and how difficult it was replacing, thanks in advance

 

Searched and found this thread from the "past"...lol. I need this same part (either one listed). Back order from Toyota for several months still.

Any thoughts on a source ?

 

If Dealers backordered, try a wrecking yard. Especially a you pull it

 

Are you talking about the part number listed in this thread, 77340-34010 ?

If so, it shows up as available from nearly every dealership near me via https://parts.toyota.com

Not to mention, the middle hyphen in this case is disposable, so 7734034010 is also a valid part number. If you're cool with paying $30 instead of $19, you'll find 7734034010 on fleaBay, ready for purchase. If you use it stylized like 77340-34010 on fleaBay, you won't get jack.

 

2000 Tundra, mechanic said part # is 772090C010, but if 7734034010 is the whole assembly (including 772090C010), then yes I will take that. Thank you.

 

I think I read the info wrong above because OP did something weird with inserting images poorly, making the text jumbled.

77209-0C010 (772090C010) looks like it's potentially a discontinued part or on its way there.

To see the full fuel tank & Tube exploded to confirm which part is correct, this page is possibly right for your vehicle (edited to include right link to 2000 year access cab V8/4WD): https://parts.toyota.com/a/Toyota_2...10696/FUEL-TANK--TUBE/841420-7751.html#77277A

NOTE: I recommend to click "VIEW FULL SIZE" at the bottom right corner of the exploded picture to see a full-size image. Click VIEW MORE IMAGES if the image shown doesn't match your truck, or doesn't show the fuel system parts you want to see. Click on any pink square in the image (next to the part you want) to jump to it in the parts list OR use the number/letter combo next to the part and search the page for that part. Anything number in the image with general format of XXXXX-XXXXX is the actual part number. Numbers in parenthesis next to the part number indicate how many you need to order for a full replacement.

 

I had to edit that - just noticed I gave the wrong link.

 

I actually found the part at a Toyota dealer in TX. Wow. Persistence worked that time.

 

I know this is a very old thread, but I just ordered what I thought was the fuel line in the picture in this thread (for my 2001 Tundra 4.7L), and toyotapartsdeal.com sent me the wrong fuel line. Part number 77340-34010 is NOT the fuel line in this picture. toyotapartsdeal.com has the correct picture for the fuel line in the middle, but the wrong part number. The correct part number for the fuel line pictured in this thread is 77209-0C010, and I found it at a local dealer for $56 as of Feb 2025. 77340-34010 is a fuel cutoff valve assembly (including the fuel line) that maintains pressure on the fuel line while the truck is turned off. Here is a description of its function:
https://autoparts.toyota.com/products/product/valve-assy-fuel-cut-7734034010

77209-0C010 is the line in the middle (named 77209B in the diagram), which plugs in to metal tubes on each end. It is very easy to replace 77209-0C010 (the tube in the middle). Just open up the red clamp on each end by gently prying open the small tab on the clamp, then pull the hose out. You could also use a small flat screwdriver to pry that tab up a bit (maybe a tenth of an inch), and pull out the hose. When you plug in the new hose, be sure to push on it pretty hard until it clicks in. After you think it's in there tug on it to make sure it doesn't come loose.


Also, I was able to repair one of the other 5/16" fuel lines with some NAPA branded 5/16" nylon fuel line and a couple of NAPA "press-to-fit" fuel line connectors (a lot like SharkBite connectors, but made by NAPA for fuel lines). So if the critters chew through a fairly straight part of your fuel line, that is a cheaper repair (about $22 for a 10 ft fuel line, and $12 for a pair of connectors). NAPA Part number for the fuel tubing is 730-5613, and the part number for the press-to-fit connectors is 730-6764. I bought a couple of spare sets of those connectors, as you can repair any 5/16" fuel line with them. NAPA also carries a right-angle version of that press-to-fit connector if you need one.

Long story, but hopefully it will help the next poor soul trying to replace that fuel line.

 

We were just talking about ToyotaPartsDeal on here. Avoid them like the plague. There's a gaggle of horrible experiences members have shared getting the wrong part, long shipping delays, no customer support, etc.

Appreciate the follow-up and advice!