Engine serial number help
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Stage II
Joined: May 2025
Posts: 2
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From: Virginia
Engine serial number help
Trying to find out engine serial number info. Contacted 3 dealerships and Harley customer service. Amazing no one can help. Number
CK37402106. I know engine has been replaced so doesn’t match number on frame. Any help appreciated
CK37402106. I know engine has been replaced so doesn’t match number on frame. Any help appreciated
HDF Community Team
Joined: Dec 2011
Posts: 8,554
Likes: 3,978
From: San Diego, CA
Can you post up a photo? This sounds like an older Sportster, can you provide a bit more information about year, model, etc? Also, what is the number on the frame? Is this a registration/title problem you're dealing with?
CK is an 883R, but there are some numbers and letters that should precede that.
https://www.tabperformance.com/harle...oogle_vignette
John
CK is an 883R, but there are some numbers and letters that should precede that.
https://www.tabperformance.com/harle...oogle_vignette
John
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Stage II
Joined: May 2025
Posts: 2
Likes: 0
From: Virginia
Can you post up a photo? This sounds like an older Sportster, can you provide a bit more information about year, model, etc? Also, what is the number on the frame? Is this a registration/title problem you're dealing with?
CK is an 883R, but there are some numbers and letters that should precede that.
https://www.tabperformance.com/harle...oogle_vignette
John
CK is an 883R, but there are some numbers and letters that should precede that.
https://www.tabperformance.com/harle...oogle_vignette
John
HDF Community Team
Joined: Dec 2011
Posts: 8,554
Likes: 3,978
From: San Diego, CA
So, why do you need the serial number information? For what questions are you seeking answers? Please post up some photos of the numbers and the bike. Some background information would be helpful as you mention a "customer" in your post.
John
John
Last edited by John Harper; May 14, 2025 at 08:50 PM.
Seasoned HDF Member
Joined: Dec 2017
Posts: 5,076
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From: Plover, WI
CK=883R (2006)
3=1200cc
7=2007
In 2007 the model code for the 883R was changed from CK to CS.
HDF Community Team
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From: Santa Ana, CA
Last edited by OCSpringer; May 15, 2025 at 10:53 PM.
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