Prado 120 sub tank in a GX470 - has anyone done it? Well I’m gonna try!

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The two electrical connections. I am checking with another supplier for the wiring harness.
7958D523-36B7-4A48-A83A-9E8725679157.jpeg

C30C4DCE-858B-4265-B77B-0BBEE8539BC7.jpeg


the completed tank
42505FEC-D340-42EF-AE64-CFB3B25F6F16.jpeg

The other parts - filler and tank straps
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just pack in a box and send, we can send up to 14kg/30.6 lbs through a standard post office.
I was assuming shipping would be restricted because they contain(ed) fuel unless the tank was thoroughly cleaned out. I don’t think you could ship via air and can’t ship overseas via ground, the only other option would be by boat. I am basing this on what is restricted for shipping in the USA.

what is the part number of this wiring and pipe attachment?

82165-60170 “wire, frame, no.2”

77295-60260 “grommet, fuel tube”
 
I was assuming shipping would be restricted because they contain(ed) fuel unless the tank was thoroughly cleaned out. I don’t think you could ship via air and can’t ship overseas via ground, the only other option would be by boat. I am basing this on what is restricted for shipping in the USA.


82165-60170 “wire, frame, no.2”

77295-60260 “grommet, fuel tube”
by air delivery, by plane. I think the post office will allow delivery if I wash the fuel tank.

New parts:
77295-60260 25$
8216560170 58$
delivery about a month to my city.
 
by air delivery, by plane. I think the post office will allow delivery if I wash the fuel tank.

New parts:
77295-60260 25$
8216560170 58$
delivery about a month to my city.

I think the way to do this is to get every possible part off of the truck in your market once we have a master list. If this can be done somewhat on the cheap I’m quite interested.
 
Slow on updates lately, life gets in the way. I have placed what hopefully will be the final orders, so following is the master parts list, this is pending install so subject to minor changes. Note that I had to order from multiple suppliers in UAE and Japan to get all the items.

Sub TankQtyComment
Tank77001-60641
1​
PLUG(FOR FUEL SUB-TANK)90105-12116
0​
come with tank
GASKET(FOR FUEL SUB-TANK)90430-12245
0​
come with tank
PROTECTOR, FUEL TANK, NO.277606-60140
0​
will fab a skid plate
BOLT, W/WASHER90119-08A33
5​
BAND SUB-ASSY, FUEL TANK77601-60270
2​
BOLT, W/WASHER91626-B1035
2​
NLA - ordered 90119-10816 instead
BOLT, W/WASHER90119-10816
2​
CUSHION, FUEL TANK, NO.177651-26070
0​
these come pre-installed on tank
Sub Tank vent
TUBE SUB-ASSY, FUEL EVAPORATION, NO.177026-60150
1​
GASKET, FUEL SUCTION TUBE SET, NO.177179-26010
0​
comes with tube sub-assy
VALVE ASSY, FUEL CUT OFF77380-26010
1​
SCREW, W/WASHER93319-A4010
4​
Sub tank fuel line/ vent
TUBE SUB-ASSY, FUEL TANK VEN77017-60460
1​
GASKET (FOR FUEL TANK SUCTION TUBE)77169-14010
0​
comes with tube sub-assy
GROMMET, FUEL TUBE77295-60260
0​
NLA
SCREW, W/WASHER90159-50219
7​
Inlet Piping
PIPE SUB-ASSY, FUEL TANK INLET77201-60840
1​
PIPE SUB-ASSY, FUEL TANK FILLER, LOWER77011-60140
1​
GASKET, FUEL TANK FILLER PIPE, LOWER77178-34010
0​
comes with tank filler, lower
SCREW, W/WASHER90159-50219
8​
HOSE, FUEL, NO.2(FOR FUEL TANK INLET PIPE)95313-13020
1​
CLAMP90460-22001
2​
HOSE, FUEL TANK SUB INLET77213-60240
1​
CLAMP (FOR FUEL FILLER PIPE)90460-46005
2​
main tank filler hose77213-35380
1​
filler hose clamp90460-46006
1​
filler hose clamp90460-55003
1​
Main tank mods
TUBE SUB-ASSY, FUEL MAIN, NO.277206-60290
1​
CLIP, TUBE JOINT77241-60320
3​
TUBE ASSY, FUEL SUCTION W/PUMP & GAGE77020-60212
1​
GASKET, FUEL SUCTION TUBE SET77169-30050
1​
Tube diagram
TUBE, FUEL TANK TO CANISTER, NO.277019-60040
0​
wont use
TUBE SUB-ASSY, BREATHER77012-60120
0​
wont use
TUBE, FUEL RETURN, NO.177208-60140
1​
CLAMP96132-51100
6​
fit evap fitting on sub tank, fuel vent from main tank (1/4")
CLAMP OR CLIP(FOR AIR HOSE, NO.2)96132-51300
2​
fuel feed
CLIP, FUEL HOSE90959-04001
2​
fuel return
Electrical
GAGE ASSY, FUEL SENDER83320-60460
1​
SCREW, W/WASHER93319-A4010
5​
WIRE, FRAME, NO.282165-60170
0​
NLA
Alternate wire harness - from 20082163-60410
1​
(no ground connect)
Extra Clamps
evap to engine hose clamps 10mm96132-51300
4​
3/4" constant tension clamps90467-21010
6​

If all goes according to plan I should be able to install some time in June.
 
in my city, they can make an additional fuel tank from stainless steel metal, with a pump that pumps fuel into the main tank.
+ 141 liters/ 37.24 gallons in TOYOTA Tundra!
 
I'm really rooting for you. You are the pioneer for this! 😂

@ZIDCONPRO I can't speak for anyone else but a big reason I'm interested in this OEM tank is that every 3rd party tank I've researched 1) had to use a loud pump to push fuel into the original tank 2) gives unreliable fuel readings 3) has finicky performance when it came to pumping fuel from the auxiliary tank to the original tank.

That said, I'd still be open to getting a 3rd party tank, especially if it's the only realistic option on the market.

Can't guarantee these issues don't exist with this OEM long range tank but I'm excited that someone is doing the leg work to find out!
 
I've been watching and waiting to see if any updates get posted as well. Very interested in this mod.
 
I tihnk that anyone wanting an aux tank is rooting for @Toyoland66 . Something like this using stock parts means OEM quality and reliability.
A master list / kit... and someone could make alot of people in the US happy!
 
Hey everyone. Sorry for no updates, things have been busy and I haven’t had time to work on this. My GX is my DD and I need a weekend to do the swap. The tank and all the parts are sitting in my shop, just waiting for time to do it.
 
I hate to say it, but based on my experience doing it first time you’ll probably want to budget the rig being down for 5 days minimum. Depends if you need partsnlocal or parts shipped. Probably only one non weekend day if parts locally available.
 
I hate to say it, but based on my experience doing it first time you’ll probably want to budget the rig being down for 5 days minimum. Depends if you need partsnlocal or parts shipped. Probably only one non weekend day if parts locally available.

You swapped a prado sub tank with all factory parts?
 
I pioneered the 200 series factory sub tank install. Pioneering there is always a few things that come up. I’m optimistic @Toyoland66 will succeed, but not optimistic it’ll drop right in in 8-12 hours. I hope to be proven wrong.

By the third install all the kinks would be worked out, the parts list finalized, and smooth sailing with an accurate timetable and action list.
 

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