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Automatic Primary Chain Tension Adjuster

Part Number 40063-05B

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In Stock Online

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Original Equipment on '06-later Dyna® and '07-later Softail® and Touring models, this Automatic Primary Chain Adjuster eliminates the need to manually adjust the primary chain tension at traditional service intervals.

  • Requires separate purchase of model-specific primary gasket and seals
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Fits '08-'09 FXDF, '10-later Dyna® (except FXDLS) and '07-later Softail® (except FLSS, FLSTFBS, FXCW, FXCWC, FXSB and FXSE) and '07- '16 Touring models. Does not fit models equipped with hydraulic clutch actuation.

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  • These Screamin' Eagle® products are 50-state street-legal for sale and use on all vehicles, including those that are pollution controlled. Complies with the requirements of 40 CFR Part 86, subparts E and F.
  • Warranty
    1 year limited warranty - See Customer Service section for details
  • Sold in Unit
    Each
  • In The Box
    Chain tensioner and all necessary installation hardware
Rated 4.5 out of 5 by 2 reviewers.
Rated 5 out of 5 by Smoother shifting Instructions were easy to follow and the product was easy to install. Gear shifting became much smoother after product installation. The hard shift into first gear from neutral has been minimized (but not removed altogether). I am very happy with the performance of my 2001 FXSTDI (88 twin cam) following the installation of this hydraulic primary chain tensioner. Currently using HD transmission/primary oil. November 16, 2015
Rated 4 out of 5 by nice unit got this for one less thing i gotta do. sure hope im doin the right thing. check back later and ill tell u da truttth.......ok? August 2, 2014
  • 2016-09-28 T17:14:55.695-05:00
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2 Questions | 2 Answers

Product Q&A

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1 answer

will this fit my Dyna Streetbob FXDB 2011?

This chain tensioner looks a little different from the one that was just removed. Different in the color. I believe the mecanism looks the same.
September 7, 2016
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Mexico City, Mexico
I Ride: FXDB 2011
How I Ride: Touring - With Passenger
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Answer: 
Hi BikErick1135,

Try P/N 39929-06B. We do not have this part online, but it does match with the 2011 FXDB.

Good Luck!
September 14, 2016
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Milwaukee, WI, USA
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Will this part fit a 2007 Road Glide ?

The fitment list on the main page says it will fit a 2007, but the years given only go as high as 2006.
Thanks, Dom
October 22, 2015
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Minneapolis, MN
I Ride: Road Glide
How I Ride: Touring - Solo
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Answer: 
Hey Dom22,
Thanks for your question! This part is actually stock (Original Equipment) on 2007-later Touring models. This is why the fitment only goes up to 2006 fitment tab.

Hope that helps!
October 23, 2015
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Milwaukee, WI, USA
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  • 2016-09-28 T17:13:54.602-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_PA-04-4006305, prod, sort_default
1 of 1
  • 2016-09-28 T17:13:54.603-05:00
  • bvseo_lps, prod_bvqa, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasquestionsanswers
  • loc_en_US, sid_PA-04-4006305, prod, sort_default
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    Harley-Davidson Motor Company as the agent for the Selling Dealer.