Flush-Mount Fuel Cap and Gauge Kit

Part Number 75027-08D


Finish / Color: Gloss Black



This low-profile fuel gauge replaces the analog readout with bright LED lamps. The six edge-mounted LED lamps glow blue when the tank is full, and extinguish one by one as fuel is consumed.

  • Offers a pop-up filler design that when installed and sealed looks identical to the flush gauge
  • A simple push, and the fuel filler cap pops up to provide ample grip, even while wearing gloves
  • Gas cap features a ratchet mechanism to prevent over tightening
  • Flush fuel gauge features individual LED lamps that shine through glass that glows when the ignition is switched on
  • Photo cell automatically adjusts LED brightness for improved visibility in direct sunlight, and dims at night to avoid distraction
  • Includes fuel cap, fuel gauge, trim ring, and plug-in wiring harness

Fits '08-'17 Softail® (except FLSTNSE, FXCW, FXCWC, FXS, FXSB, FXSBSE and FXSE), '08-later Road King® and '15-later Freewheeler® models.

Bike not listed?
Select your year and model to see all the parts that fit your bike.

  • Model


Some local regulations prohibit using colored lights during vehicle operation on public streets. May not conform to local lighting regulations.

  • Warranty

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

  • In The Box

    Fuel cap, fuel gauge, trim ring, and plug-in wiring harness
Flush-Mount Fuel Cap & Gauge Kit is rated 4.7 out of 5 by 10.
Rated 5 out of 5 by from Dramatically enhance the look of your bike Is this an overly expensive part? Yea, it is. But I'd say it's still worth spending the money, because the difference between the stock fuel cap and gauge on my RKS and this is like night and day. Gives the bike an immediate and dramatically enhanced look. Honestly, if H-D was going to black out the RKS, the bike should have just come stock with this part anyway. To me, there was no question, I had to have this on my bike, and I couldn't be happier with the results. Installed by the dealer, so I cannot comment as to the ease of install. The blue LED's look better and are more visible than the needle on the old gauge, which required me to lean forward to see.
Date published: 2018-01-15
Rated 3 out of 5 by from Meh Not worth the price in my opinion. The fuel gauge is hard to read in the sun.
Date published: 2017-10-07
Rated 4 out of 5 by from Looks Good I like the sleek new look this kit gave my the gas tank on my 2017 Softail slim. The install was very easy. The problem I had was with the gas gauge and it was due to my own fault. I installed the wires in the 4 pin connector the wrong way and had a tough time taking them out and reinstalling them. After a few minutes I got them out and once installed correctly the gas gauge lit up and everything worked fine. The blue LED lights look nice and bright. The only other small issue is that I have a tough time getting the gas cap off. You have to push down and twist in order to remove it. The fact that it's so sleek and smooth makes it hard to turn. Not a big deal. I use my two pointer fingers to push down and twist. The little inconvenience is worth the clean sleek look
Date published: 2017-09-03
Rated 5 out of 5 by from Great addition One of the first changes I made to my FLSS. Easy install and it looks great. Took me an hour or so but thats mostly because I'm super peculiar about getting it perfect.
Date published: 2017-05-02
  • y_2018, m_2, d_26, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_US, sid_PA-10-7502708B, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_harleydavidson


Hello, I'm looking for this product in black version.
Asked by: Ivano

Does this have blue LED's also?

Do these have the same LED indicators that the chrome flush caps do? I don't see where the LED's are in this photo
Asked by: JohnnyRPMMC

in the list of bikes i fail to see the FXFB mentioned. Will this fit the 2016 Fatbob?

Asked by: Anilqat

Is the note at the top of the filament list correct "Fits 04-07 Road King® models"

The filament tab on P/N 75027-08C lists bikes 2008-2017 however at the top of the filament list it says Fits 04-07 Road King® models. So will the kit fit my 2005 Road King Classic?
Asked by: Allenpro
I called HD after I submitted the question and I was told it would fit my 2005 RK so I bought it through a HD dealer. Now that I have a purchased a non returnable Item what do I do with it? Why wont it fit my 2005 RK?
Answered by: Allenpro
Date published: 2017-08-26

Is the fuel guage harness easy to connect to the exiting wirers from the stock fuel guage?

Bike is 2012 fls product is kit 75027-08c
Asked by: chetroc
  • y_2018, m_2, d_26, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.7
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_6
  • loc_en_US, sid_PA-10-7502708B, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_harleydavidson

Recently Viewed

    Please Hold Your Iron Horses

    You've been sitting idle, so we've ended your session to protect your personal details.

    Continue as guest Sign in
    Online Exclusives

    You’ve been sitting idle, so your session will expire in

    Would you like to remain signed in and continue shopping?

    Yes, keep me signed in No, sign me out

    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.