KZ400 fuel tank cap identification
- fricks
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Re: KZ400 fuel tank cap identification
18 Jan 2021 03:05
Thank you very much!! If I end up finding something similar I will post a link here so others can find a possible replacement too

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- TexasKZ
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Re: KZ400 fuel tank cap identification
19 Jan 2021 04:12
The distance between the seal and the top of the locking tabs might also be important.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
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- martin_csr
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Re: KZ400 fuel tank cap identification
19 Jan 2021 08:43 - 20 Jan 2021 08:01By Nerdy: Right, so I was able to find the key *and* the calipers to take some measurements, so here we go.
overall diameter = 71mm
the black O-ring and the metal bit under it = 55mm
the round piece that goes into the tank - the outcropping at the 12:00 position = 34.5mm (C)
the round piece that goes into the tank + the outcropping = 38mm (D)
the two locking pieces when they're out = 41.5mm (E)
the central piece stamped 'Made in Japan' = 26mm (F) ...
Thanks for the measurements. Does this pic look right?
Last edit: 20 Jan 2021 08:01 by martin_csr.
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- Nerdy
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Re: KZ400 fuel tank cap identification
19 Jan 2021 14:52martin_csr wrote: Thanks for the measurements. Does this pic look right?
It certainly does - thank you! You beat me to it.

1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R
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- Nerdy
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Re: KZ400 fuel tank cap identification
19 Jan 2021 14:53TexasKZ wrote: The distance between the seal and the top of the locking tabs might also be important.
That's a good point. I will grab that measurement when I have a chance.
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R
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- fricks
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Re: KZ400 fuel tank cap identification
08 Feb 2021 12:37Nerdy wrote:TexasKZ wrote: The distance between the seal and the top of the locking tabs might also be important.
That's a good point. I will grab that measurement when I have a chance.
Hey Nerdy, just checking in to see if you've had an opportunity to measure the distance between seal and locking tabs? Thank you
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