Read ( 51 ) Reviews

Autolite Xtreme Sport Iridium XS65 Spark Plug

J&P Cycles Part Number: 383-485

Manufacturer Part Number: XS65


Gold Club Price: $8.09

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Description for Autolite Xtreme Sport Iridium XS65 Spark Plug

• More focused ignition to prevent fouling than leading standard plug

• .6mm finewire design with Sport V-trim ground electrode engineered to offer improved ignitability and durability over standard plug

• Up to 26% quicker starts than leading standard plugs

• More horsepower and better fuel efficiency than standard plug

• Meets or exceeds OEM design

Product Specs

Product Specs for Autolite Xtreme Sport Iridium XS65 Spark Plug

Manufacturer Part Number:
OEM Reference:
Sold in Units:
Warehouse Part Number:
Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

Compatible Models

Harley-Davidson® Models

  • Dyna Low Rider Convertible FXDS-CONV : 1994–1998
  • Dyna Low Rider FXDL : 1993–1998
  • Dyna Super Glide Custom FXDC : 1992
  • Dyna Super Glide Daytona FXDB-D : 1992
  • Dyna Super Glide FXD : 1995–1998
  • Dyna Super Glide Sturgis FXDB-S : 1991
  • Dyna Wide Glide FXDWG : 1993–1998
  • Low Rider FXSB : 1985
  • Softail Bad Boy FXSTSB : 1995–1997
  • Softail Custom FXSTC : 1984–1999
  • Softail Fat Boy FLSTF : 1990–1999
  • Softail Heritage Classic FLSTC : 1987–1999
  • Softail Heritage FLST : 1986–1990
  • Softail Heritage Springer FLSTS : 1997–1999
  • Softail Night Train FXSTB : 1998–1999
  • Softail Nostalgia FLSTN : 1993–1996
  • Softail Springer FXSTS : 1988–1999
  • Softail Standard FXST : 1984–1990, 1999
  • Super Glide Custom FXRC : 1985
  • Super Glide Disc Glide FXRDG : 1984
  • Super Glide Fat Bob FXEF : 1985
  • Super Glide FXR : 1986–1994
  • Super Glide FXR2 : 1999
  • Super Glide FXR3 : 1999
  • Super Glide FXR4 : 2000
  • Super Glide Grand Touring FXRD : 1986
  • Super Glide II FXR : 1984–1985
  • Super Glide Low Rider Anniversary FXRS : 1988
  • Super Glide Low Rider Convertible FXRS-CONV : 1989–1993
  • Super Glide Low Rider Custom Anniversary FXLR : 1987
  • Super Glide Low Rider Custom FXLR : 1987–1994
  • Super Glide Low Rider FXRS : 1984–1992
  • Super Glide Low Rider Sport FXRS-SP : 1987–1993
  • Super Glide Police FXRP : 1984–1994
  • Super Glide Sport Glide FXRT : 1984–1992
  • Tour Glide FLT : 1984
  • Touring Electra Glide Classic Anniversary FLHTC : 1988
  • Touring Electra Glide Classic EFI FLHTCI : 1996–1998
  • Touring Electra Glide Classic FLHTC : 1984–1998
  • Touring Electra Glide Police FLHTP : 1986–1998
  • Touring Electra Glide Sport FLHS : 1987–1993
  • Touring Electra Glide Standard FLHT : 1985–1989, 1995–1998
  • Touring Electra Glide Ultra Classic EFI FLHTCUI : 1995–1998
  • Touring Electra Glide Ultra Classic FLHTCU : 1989–1998
  • Touring Road Glide EFI FLTRI : 1998
  • Touring Road Glide FLTR : 1998
  • Touring Road King Classic EFI FLHRCI : 1998
  • Touring Road King EFI FLHRI : 1996–1998
  • Touring Road King FLHR : 1994–1998
  • Touring Road King Police FLHP : 1997–1998
  • Touring Tour Glide Classic Anniversary FLTC : 1988
  • Touring Tour Glide Classic FLTC : 1984–1992
  • Touring Tour Glide FLT : 1985–1986
  • Touring Tour Glide Ultra Classic EFI FLTCUI : 1996
  • Touring Tour Glide Ultra Classic FLTCU : 1989–1995
  • Wide Glide FXWG : 1985–1986
Customer Reviews

Customer Reviews for Autolite Xtreme Sport Iridium XS65 Spark Plug

Overall Rating

5 out of 5 stars (based on 51 reviews)

5 stars (43)

4 stars (6)

3 stars (2)

2 stars (0)

1 star (0)

0 stars (0)


I used these to help with a problem my bike has of backfiring once in awhile after the ignition is tuned off. they worked very well and last about twice as long as the original plug


Best plugs I have run. evo or tc!


Great plug and price.


so far working well !


Great plugs, but make sure you gap them for the ignition you are running.


nice plugs. exact fit! ! !


Great Value


Nice plugs.

Work great hard to believe spark plugs can add pep to a stock bike.

1996 roadking

Great price & plugs

1996 roadking

Great price

1996 roadking

Great price


I have run Autolite in my Harley for over 30 years. Great plug


I put them in for a while. Switched to Accel plugs. I ordered both at the same time. Can't tell the difference between them, But either run great in my modified evolution motor. One set to run. Other for spare

haven't tried it because only 1 spark plug included


Great spark plugs


very good spark plugs!


Great plugs for the money. Easy start ups on my carb bike. use these on all my bikes


Excellent Plugs!!! Noticed my New Bike (only 2000 miles) runs better after swapping to these. I've put these plugs in other bikes with the same excellent results.


no problems as of yet, no fitment issues came well packaged and in good condition.


Still testing on my 883 Iron. So far so good.


Got many miles out of them, no miss very happy!

Reliable performance on a mildly modified Twin Cam


Excellant plugs. Run nothing but Autolite and these are the best.


Great plugs.


Smooth running plug!


If you are doing your own work it will pay to use these plugs.


Nice plugs, I expect to see a bit better throttle response.


Every time I buy new plugs, I buy the latest, greatest plugs on the market. Then a couple months later, I throw them away and buy another set of these. You think I'd learn, but I'm a sucker for a great ad.


great plug


Excellent spark plug, smooth idle, excellent performance. Picked with the help of JP Cycles chat line.


Sweet. Slight but noticeable difference. Smoother ride and less popping. It's hard to tell without a dyno run, but the bike feels more tiny bit more powerful. They look really well made, let's see how long they will last. Up to now, they seem like a good bang for the bucks.

Fires right up, seem to work fine.


thought desrciption said sold as pair, found same plug locally much cheaper


A little hard to put on


Great plugs at a great price. Autolite plugs work great in Harleys.


Out performs the stock spark plug. Quick starts and cleaner burning. Well worth the extra cost.

John Rinck

They are doing the job

John Rinck

They are doing the job


Bike has been running great since I installed these. Another good deal from J&P.

stanley moscariello

good price and good plugs


good products


very strong! feel get more powew my 1998 sportstar1200c


Great Spark Plugs - seems to give slight increase in response.


I feel like these plugs gave my 2010 Dyna a little more fire, she feels like she is hitting better. Response wise and regular riding.


My 2013 Road King was stalling at stop lights and idling rough. I installed these plugs with a new set of wires and it solved my problem.


Awesome spark plugs! My 2000 road king runs really well on these plugs. This bike starts, idles and runs like a different bike. Give these plugs a try,


Awesome spark plugs! My 2000 road king runs really well on these plugs. This bike starts, idles and runs like a different bike. Give these plugs a try,


running a 93 hot setup in a 67 flh these are the only plugs i use. they idle better than any other and are excellent on top end. greate for carb motors


these are great, the only plug I found that will go the whole summer on a panhead


awesome performance great plug brought ole shovel to life.

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Once opened, electrical items cannot be returned, except in the case of a manufacturing defect.

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