KZ305 Air box Boot Issue - 14073-1051 WORKAROUND

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KZ305 Air box Boot Issue - 14073-1051 WORKAROUND

14 Jun 2026 16:36 - 14 Jun 2026 17:34
#924883

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My 81' KZ305 uses those stupid air box intake boots, part number 14073-1051. They are impossible to find anywhere, no NOS, no remans, nothing. For the past month and a half I've struggled to think of a workaround until I went to home depot and found these 1 1/2" rubber hoses. They fit the diameter of the air box holes perfectly as well as connect to the carb side perfectly. It creates a very nice seal on the air box side, I'd even go as to say better than the stock boots. Be aware that the boots need to be trimmed down a smidge to actually fit and have the same length as the stock boots.

The Home Depot part number is P1056-150. If you do not have access to a home depot, the actual company for the hose is called Fernco part P1056-150.

I hope to god people who are in the same boat see this.
Last edit: 14 Jun 2026 17:34 by W2FH_HHH.
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Re: KZ305 Air box Boot Issue - 14073-1051 WORKAROUND

14 Jun 2026 17:21
#924884
Welcome to KZRider
Your next post MUST be a introduction in our New Members section. 
Once done I will OK any further posts you make in this forum
Dave 
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Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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Re: KZ305 Air box Boot Issue - 14073-1051 WORKAROUND

14 Jun 2026 19:50
#924888
Glad you found that, but people have been using pieces of radiator hose for years :)

It's available in different sizes to fit a lot of different situations and is well-suited to high temps (even though a carb boot doesn't see all that much heat). They also might be cheaper than Ferncos
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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Re: KZ305 Air box Boot Issue - 14073-1051 WORKAROUND

16 Jun 2026 05:18
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Awaiting introduction post before your post here will be oked

Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn

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