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.

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

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

Desertcart Logo

Deliver to Sint Maarten

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

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 - Save time and hassle with plugs perfectly set for optimal ignition.
TRUSTED INDUSTRY LEADER - NGK’s cutting-edge spark plug technology trusted by Harley Davidson pros.
CORROSION RESISTANT ARMOR - New metal shell plating guards against rust and wear, keeping your ride reliable.

NGK Iridium IX DCPR7EIX spark plugs deliver superior ignition performance for 1999-2016 Harley Davidson Twin Cam models. Featuring a 25% smaller iridium electrode, these pre-gapped plugs reduce voltage requirements, extend ignition system life, and provide up to 3 horsepower gain. Enhanced with a corrosion-resistant metal shell, they ensure durability and reliability for passionate riders seeking peak engine efficiency.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

ƒ167

Duties & taxes incl.

Sint Maartenstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

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

1 day ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

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
Position	Front, Rear
Item Weight	40.8 g

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

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions