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⚡ Ignite your ride with NGK Iridium IX — where power meets precision.
NGK Iridium IX DCPR7EIX spark plugs deliver a high-performance upgrade for 1999-2016 Harley Davidson Twin Cam motorcycles. Featuring a 25% smaller iridium electrode, these plugs reduce voltage requirements and extend ignition system life. Pre-gapped for easy installation, they also boast enhanced anti-corrosion metal shell plating, ensuring durability and reliable power gains of up to 3 horsepower.
| ASIN | B003BUCNNS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #10,959 in Automotive ( See Top 100 in Automotive ) #41 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Nickel |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,785) |
| Date First Available | December 12, 2013 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item model number | DCPR7EIX |
| Manufacturer | NGK |
| Manufacturer Part Number | DCPR7EIX |
| Model | NGK DCPR7EIX |
| Position | Front |
| Product Dimensions | 3.31 x 0.94 x 0.83 inches |
| Thread Size | 12mm |
| Top Material Type | Metal |
| UPC | 700155016542 |
| Vehicle Service Type | Motorcycle |
E**N
Smooth Idle and Stronger Spark – Worth Every Penny
Installed these NGK Iridium IX DCPR7EIX spark plugs in my 1999–2016 Harley Davidson Twin Cam, and the difference was noticeable right away. The bike fired up quicker, idled smoother, and throttle response felt more crisp. NGK quality speaks for itself. The iridium tip is known for durability and a strong, consistent spark, and that’s exactly what you get. They feel like a premium upgrade over standard plugs, especially if you ride often or want dependable performance. Fitment was perfect, no issues with installation, and they came properly packaged as a matched pair. For the price, it’s a solid upgrade that improves reliability and performance without breaking the bank. If you’re running a Twin Cam and want better ignition performance and long service life, these are an easy 5-star choice.
A**N
Excellent Spark Plugs!
I bought these spark plugs for my 2007 Harley-Davidson Softail Night Train (FXSTB). They fit perfectly! The price is for a pair (2 plugs) — very convenient and affordable. After installation, the motorcycle started instantly and runs smoothly and quietly. I’m very happy with this purchase and highly recommend these plugs to all Harley owners — great quality for a fair price!
W**S
Great plugs
Perform well in my 2011 Harley FLHTK 103. No issues with fitment, look good, good value, bike start after install.
R**K
Right plug for bike
Perfect for my bike, came fast gaped @ 40 . Bike is running better, I will see how long they perform
I**.
new life into an old bike.
Put them in my 1200 Sportster xlc 2002. Along with a new air filter, made my bike run like a champ. A consistent idle and great acceleration..
B**N
Good plugs
Stronger burn. Love them
E**E
Replace your spark plugs with these babies!
My Harley-Davidson Road King starts better seems to have more power and overall performance is better with these new plugs. I bought two sets and gave one to my friend who also rides a Harley Davidson Sportster.
C**Y
Spark plugs
Perfect!!!
B**6
OEM fit for Harley Davidson Fatboy 103 Ci twin cam engine. Smooth starting and running.
J**S
As described. Well packaged.
M**M
Good update for my Harley
C**O
Rápido, calidad, precio
R**T
Just as good as the Harley ones. I feel no difference. Running these plugs now for 20k km.
Trustpilot
5 days ago
2 days ago