Harley-Davidson FLSTN Softail Deluxe Spark Plug

The Harley-Davidson FLSTN Softail Deluxe (1586cc) takes an NGK DCPR7E spark plug, gapped to 0.040".

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Key takeaways

  • Spark plug: NGK DCPR7E.
  • Iridium upgrade: NGK DCPR7EIX.
  • Gap: 0.040 inch - set it before fitting.
  • Covers 2008-2010.
Standard PlugDCPR7E
Iridium UpgradeDCPR7EIX
Gap0.040"
Verified fitLast checked
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.

Buy the plugs for your Harley-Davidson FLSTN Softail Deluxe

The standard plug is the exact-fit replacement. The iridium version drops into the same spot, lasts longer, and fires a little stronger for a few dollars more. Many engines take more than one - check how many cylinders you have.

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Frequently asked

What spark plug does a Harley-Davidson FLSTN Softail Deluxe take?

The Harley-Davidson FLSTN Softail Deluxe takes an NGK DCPR7E spark plug, gapped to 0.040 inch. The iridium upgrade is the DCPR7EIX.

What is the spark plug gap for a Harley-Davidson FLSTN Softail Deluxe?

The spark plug gap for the Harley-Davidson FLSTN Softail Deluxe is 0.040 inch. Check and set the gap before fitting a new plug - most powersports plugs need a small adjustment out of the box.

Can I use an iridium plug in a Harley-Davidson FLSTN Softail Deluxe?

Yes. The DCPR7EIX is the iridium version of the DCPR7E - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.

More parts for your Harley-Davidson FLSTN Softail Deluxe

We cover the other consumables for your machine too - the exact fit, cited, in one place.

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