Denso W24ESU
- Kapahulu
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Denso W24ESU
08 Nov 2011 20:04
Many people say Denso W24ESU plugs are the best. Only thing is, they are hard to find! I bought a set on e-bay awhile back and finally put them in my KZ1000 the other day. It did actually fire up a bit quicker compared with the NGK's.
So I went hunting on the internet for more plugs, would up on e-bay again and found a guy who sells them at a great price.
Here's the link to Greg's This n That
Sometimes I don't find the plugs on e-bay by searching for W24ESU. But I do find them when I search for W24.
Check it out. I bought eight of these plugs and the price, including postage to Hawaii (flat rate box) was under $20.
Aloha, Mike
So I went hunting on the internet for more plugs, would up on e-bay again and found a guy who sells them at a great price.
Here's the link to Greg's This n That
Sometimes I don't find the plugs on e-bay by searching for W24ESU. But I do find them when I search for W24.
Check it out. I bought eight of these plugs and the price, including postage to Hawaii (flat rate box) was under $20.
Aloha, Mike
1978 KZ1000, 1976 KZ900, 1975 H2, 1973 H1, 1973 H2, 1978 RD400, 1977 RD400, 1974 RD350
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- MFolks
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Re: Denso W24ESU
08 Nov 2011 20:07
I believe the Accel #116 sparkplug is the same(maybe made by Denso for Accel)
www.gadgetjq.com/spark_plug_cross_reference_motorcycle.htm
www.gadgetjq.com/spark_plug_cross_reference_motorcycle.htm
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- 650ed
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Re: Denso W24ESU
08 Nov 2011 20:16
I use the Denso "Hot U" ND W22ES-U on my KZ650 and they work great. Keep an eye on eBay because sometimes you can find amazing deals on spark plugs. I bought 40 (forty) of the above plugs all nice and new in clean packaging for $10 !
I'll never need to buy plugs for the bike again. Ed

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- otakar
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Re: Denso W24ESU
08 Nov 2011 20:45MFolks wrote: I believe the Accel #116 sparkplug is the same(maybe made by Denso for Accel)
www.gadgetjq.com/spark_plug_cross_reference_motorcycle.htm
you are correct. They are the identical plug made for ACCEL by Denso because they discontinued them as the W24ESU. You can buy those at Summit or Jegs.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- martin_csr
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Last edit: 15 Feb 2013 11:58 by martin_csr.
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- 650ed
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Re: Denso W24ESU
09 Nov 2011 11:09martin_csr wrote:You beat me. I bought a case of Denso plugs for twenty five bucks. 80 brand spankin' new plugs, individually boxed in the original packaging. yee haw.650ed wrote: ..... Keep an eye on eBay because sometimes you can find amazing deals on spark plugs. I bought 40 (forty) of the above plugs all nice and new in clean packaging for $10 !I'll never need to buy plugs for the bike again. Ed
That's an amazing deal! That's about $320 worth of plugs for $25 - not too shabby! Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- Mcdroid
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Re: Denso W24ESU
09 Nov 2011 12:48 - 09 Nov 2011 13:54
Crap, now that the word is out, ...it appears we will all be bidding against each other :laugh:
Michael
Victoria, Texas
1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A
Victoria, Texas
1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A
Last edit: 09 Nov 2011 13:54 by Mcdroid. Reason: sp
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- otakar
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Re: Denso W24ESU
09 Nov 2011 13:02
The W22 is much easier to find than the W24 is.
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
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- Jeff.Saunders
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Re: Denso W24ESU
09 Nov 2011 13:59
I've run the ND plus - I still have a bunch in my tool box that came with my turbo Z1. Overall I'd say they are good plugs. I wouldn't consider tham better than the NGK plugs. The heat ranges seem to overlap the NGK plugs a little. I got a slightly different plug color with the W27ES-U plugs versus the NGK B9ES plugs in my turbo bike - although I can't remember now which was hotter.
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- Kapahulu
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Re: Denso W24ESU
09 Nov 2011 14:01According to that guide the Accel #112 is a replacement for the NGK B8ES.MFolks wrote: I believe the Accel #116 sparkplug is the same(maybe made by Denso for Accel)
www.gadgetjq.com/spark_plug_cross_reference_motorcycle.htm
I checked with some local shops and didn't find any in Honolulu that carry Accel sparkplugs. And Jeg's doesn't offer shipping to Hawaii.
1978 KZ1000, 1976 KZ900, 1975 H2, 1973 H1, 1973 H2, 1978 RD400, 1977 RD400, 1974 RD350
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- otakar
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Re: Denso W24ESU
09 Nov 2011 19:53 - 09 Nov 2011 19:57
It's been a while since I did the research but I looked up my notes. I was hasty with my agreement. The ACCEL 142 is the same as the W24ES-U (B8ES), and the 143 is the same as the W22ES-U. Here is the link to my research. There are a lot of conflicting references on the web, so proper research was required.
kzrider.com/forum/4-electrical/351334-wh...n-?limit=20&start=20
kzrider.com/forum/4-electrical/351334-wh...n-?limit=20&start=20
74 Z1-A stock
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
76 KZ-900 Totaly stock vice MAC pipe
77 KZ-1000A stock
78 Z1-R 100%MINT 500 original Mi.
78 Z1-R Yoshi 1103 kit stage 1 cams Yoshi pipe. Etc
79 KZ-1300 (1400)
80 KZ-1300
81 Scratch built GPz1150R
82 KZ1000
Last edit: 09 Nov 2011 19:57 by otakar.
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