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Finned Headbolt Bridge

Part Number 43859-00


Finish / Color: Black


Available Not available Image

In Stock Online


This exclusive aluminum Finned Headbolt Bridge covers both headbolts and the spark plug, filling out your cylinder fins all the way to the rocker box.

  • Features an engraved Bar & Shield emblem
  • Easy to install with unique headbolt mounts
  • Sold in pairs
  • Includes all necessary mounting hardware

Fits '99-later Twin Cam-equipped models with electronic fuel injection and '00-later FXSTD models.

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  • Model
  • Material Content

  • Warranty

    1 year limited warranty – Go to for full details
  • Sold in Unit

  • In The Box

    All necessary mounting hardware
Finned Headbolt Bridge is rated 4.7 out of 5 by 24.
Rated 5 out of 5 by from Nice finished look! Easy to install. Very nice "finished" look! Great product!
Date published: 2017-02-05
Rated 3 out of 5 by from Looks Great to finish off the top of yoiur heads This looks great on a engine it will fit on. On the page for this it said it would fit my bike but it does not even come close to fitting it. I just bought a 2017 Tri Glide Trike and the 107 engine is totally different. I will wait for the ones that fit to come out. They look great when they fit!!
Date published: 2016-12-06
Rated 5 out of 5 by from Bridge added style to the other side of the bike engine Bridge helped fill that gap nicely. Also, added the Screaming Eagle 10mm plug wires (black).
Date published: 2016-10-16
Rated 5 out of 5 by from Nice tuch As always HD products are top notch. They may cost a little more but you get what you pay for.
Date published: 2016-09-19
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Why this fits 15' FLHTKSE but not fits 15' FLHXSE? They engines are the same!

Asked by: cdemczuk

Once installed is there a heat build up that would be bad for the heads& spark plugs?

Asked by: Harleyrider50
Hello Harleyrider50, You do not need to worry about excessive heat build up from installing the covers. Thank You!
Answered by: JD34
Date published: 2015-04-15

Diamond Cut Edge?

Does these match up with the diamond cut edge on a stock 09 Ultra Classic?
Asked by: Curl58
Hey Curl58, Yes, this Finned Headbolt bridge will match the engine finish on your 2009 Ultra Classic.
Answered by: Wisco832
Date published: 2014-06-25
  • y_2017, m_2, d_21, h_2CST
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  • clientName_harleydavidson

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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.