NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)

Q: Should I gap to my owners manual spec or are they designed to work with the smaller pre-gap they came with?

Harley Davidson recommends 0.40" gap. As to "You should never gap an iridium plug", NGK's website states for Harley Davidson, these should be gapped at 0.40". I've found many websites stating that if re-gap is needed use care not to damage the electrode or the porcelain center. So, it's not that you should not re-gap, it's that you should be extremely careful.

Q: Is this 6r12, if so why does it not say so ?

Because these plugs are IX DCPR7EIX 99 TO 16 HARLEY-DAVIDSON

4.7/5

Product ID: 254497229

Secure Transaction

Details

Brand
NGK
Core material
Nickel
Thread size
12mm
Top material type
Metal
Vehicle service type
Motorcycle

⚡Up to 3HP power boost

🔧Pre-gapped for instant install

🛡️Enhanced anti-corrosion shell

Frequently Bought Together

NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)

K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson, Buell Motorcycles, KN-171C

K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson Motorcycles, KN-171B

Description

⚡ Ignite your Harley’s true potential with NGK Iridium IX!

IRIDIUM EDGE TECH - Ultra-small 25% smaller iridium electrode means less voltage needed and longer ignition life.
POWER SURGE READY - Unlock up to 3 extra horsepower and feel the difference on every ride.
PRECISION PRE GAPPED - Skip the hassle—these plugs come perfectly pre-set for flawless ignition.
TRUSTED INDUSTRY LEADER - NGK’s cutting-edge spark plug technology trusted by pros and enthusiasts alike.
CORROSION RESISTANT ARMOR - New metal shell plating guards against rust, keeping your ride reliable season after season.

NGK Iridium IX DCPR7EIX spark plugs deliver superior ignition performance for 1999-2016 Harley Davidson Twin Cam models. Featuring a 25% smaller iridium electrode, pre-gapped precision, and enhanced anti-corrosion metal shell plating, these plugs boost horsepower by up to 3HP while extending ignition system life and reliability.

Specifications

Manufacturer	NGK
Brand	NGK
Model	NGK DCPR7EIX
Product Dimensions	8.41 x 2.39 x 2.11 cm; 40.82 g
Item model number	DCPR7EIX
Exterior	Painted
Manufacturer Part Number	DCPR7EIX
Item Weight	40.8 g

Have a Question? See What Others Asked

Should I gap to my owners manual spec or are they designed to work with the smaller pre-gap they came with?

Are these 14mm threads?

Do you get 1 or 2 spark plugs in this price

Is this 6r12, if so why does it not say so ?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Fr 55

Duties & taxes incl.

Switzerlandstore

Free Shipping

with PRO Membership

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews