To give our customers the best shopping experience, our website uses cookies.  Learn More

NGK Iridium Sparkplug

This is a "machine-selection optional" part.Please choose a vehicle to see the options specific to your machine.choose from all of the options below and add to cart.

Choose a machine

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

Use one of my Saved Machines
NGK Iridium Sparkplug
  • View Larger
  • Video

NGK Iridium Sparkplug

Our Price: $9.99$17.99

MSRP: $11.50 - $19.87 - You save up to $1.88 (9% off)

View Product Details

Select options above to check availability

Live Help
  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

  • Returns

    We take pride in offering no hassle returns. In the event of a return, please call, email or chat with us to receive a solution to the problem. For apparel that doesn't fit quite right, Click here to see our Fit Guaranteed Program.

  • Warranties

    We will stand behind all products we sell with regards to manufacturing defects in workmanship and material. Most products are limited to the manufacturer's warranty. However, we will do everything in our power to take care of the problem.

  • Have questions?

    Live Help (Leave email if after hours)
    Email: [email protected]
    Call us: 1 800 336-5437
    7am-7pm Mon-Fri 8am-4pm Sat (Mountain Time)

Additional Videos

NGK Spark Plugs | Why spark plugs need to be replaced

NGK Spark Pugs | WHAT IS A “FOULED” SPARK PLUG?

NGK Spark Plug Types

NGK Spark Plug Heat Range

NGK Spark Plug Numbers & Letters -Tech Video

RM YouTube Channel
SUBSCRIBE

Details

  • Laser Iridium® spark plugs provide superior ignitability and long service life. Smallest tip diameter available Iridium surfaces ensure slow wear rate providing stable idle, superior anti-fouling, improved fuel efficiency and lower emissions.
  • Laser welded Iridium center electrode tip.
  • Platinum disc welded to backside of ground electrode provides long life.
  • Trivalent Metal Plating for superior anti-corrosion and anti-seizing.
  • Faster starts and quicker acceleration.
  • Better fuel economy and lower emissions.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

NGK Iridium Sparkplug Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.9 / 5.0
497 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
448
39
7
0
3
Value
4.7 / 5
Performance
4.9 / 5
Recommend it?
Yes (179)
No (2)
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great spark plug
Ive always liked ngk spark plugs, great addition to my kids four wheeler

-m-2008 YAMAHA RAPTOR 80--
November 10, 2019
Spring creek, NV, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Long lasting, great performance
Used one for 56hrs on my son’s 2017 KTM 85sx even through a lot or racing and it still looked good after that.
October 15, 2019
Reno, NV, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
251 - 280 lbs.
Height:
6'4 - 6'6
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product
Great product, excellant price considering what dealers in NZ want you to pay for these.

-m-2017 SUZUKI RMX450Z--
October 2, 2019
Feilding, Manawatu , NZ
Age: 25-44
Purchased
3 months ago
Gender:
Male
Value
4 / 5
Performance
5 / 5
Recommend it?
Yes
Awesome plugs
Works great no problem starting with these plugs.

-m-1997 KAWASAKI KDX220--
October 1, 2019
Oak grove, KY, US
Age: 25-44
Purchased
3 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Extra plugs come in handy. Use these all the time work great!
October 1, 2019
Milford, MI, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Recommend it?
Yes
Honda FourTrax 300
Seems like a perfect replacement for the previous spark plug that was in my 1997 Honda FourTrax 300. It came already gapped to the factory recommendation.
September 19, 2019
Saint George, UT, US
Purchased
3 months ago
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Takes 10 champion plugs to last as long as 1 ngk
Great product and very affordable. I highly recommend
September 5, 2019
Cedar springs, MI, US
Age: 25-44
Purchased
over 3 years ago
Gender:
Male
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Improvement over stock plug.
I can definitely feel the improvement in throttle and performance.
September 5, 2019
COLORADO SPRINGS, CO, US
Age: 45-64
Purchased
3 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
New spark plug
Installed a new coil and figured it was time for a new plug as well. This is what Honda put in it to start with, figured might as well stick with it.
August 22, 2019
Kansas , KS, US
Age: 25-44
Purchased
6 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Recommend it?
Yes
Expensive but worth it
Expensive compared to other spark plugs, but it’s nice to not have to worry about fouling a plug once you put on in your bike.
August 15, 2019
Cross Plains, TN, US
Purchased
4 months ago
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 35 answers
your sure this fits a 07 rmz450?
A shopper on Jan 2, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does the end screw off of this plug? This end want fit my wire. I need the end that is small with threads.
Steven H on Jan 9, 2018
BEST ANSWER: Been a while since I've bought this one but have used NGK for years and cannot remember one that did not screw off exposing the tip you need.
Which are better overall these or the e3 plugs?
Bailey A on Dec 26, 2018
BEST ANSWER: Without defaming a brand, in my opinion the solid brands from a overall reliability and performance point of view would be NGK, Denso, Bosch, I feel that some of the other brands are purely marketing. An example would be split fire, they guaranteed a performance increase but if you read the guarantee it voided if you dyno tested... lol so how do you quantify performance. I’d recommend sticking with ND or NGK for a bike.
Does this plug come with a terminal nut?
Rolando H on Apr 2, 2018
BEST ANSWER: I don't believe it comes with a terminal nut. If I recall, it only comes with a threaded terminal stud with a terminal threaded onto it. No nut though.
Is the plug pre gapped?
Gage E on Oct 29, 2019
BEST ANSWER: Yes
Is this recommended for a 05 crf450r with a13:1 high compression piston installed?
A shopper on Nov 16, 2018
BEST ANSWER: This is a question for a professional performance engine builder. You will most likely need to adjust your heat range due to higher combustion temperatures. I use these in my 2 stroke for better resistance to fouling.
is this plug direct fit for yz 125 1977?
mike c on Jan 6, 2017
BEST ANSWER: Yes, this will fit your machine. To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does this fit a 2017 raptor 90cc?
A shopper on Oct 7, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
Will this plug work in my 07crf250r ??
Nathan B on Sep 22, 2019
BEST ANSWER: Unfortunately, we do not have this sparkplug available for your machine at the moment.
What sparkplug do you use on ktm250sxf 2019 model?
A shopper on May 10, 2019
BEST ANSWER: Your sparkplug is LMAR9AI-8. If you enter in your make, model, and year above the product image it will come up.
On my 2019 yz125 spark plug is BR9EVX, but i dont see any on here,, can i use the BR9EIX,, is that the same but much pricey?
manuel c on Apr 23, 2019
BEST ANSWER: They are the same size plug just a different model number.
Do you stock ngk SILMAR7A9S plugs?
A shopper on Mar 29, 2019
BEST ANSWER: Unfortunately, we do not carry this plug.
I have a 2004 Honda trx 450r, if I have the bike registered and looking at parts for it yall will know what plug to send me for my bike?
A shopper on Feb 6, 2019
BEST ANSWER: Yes, just enter in your make, model, and year and it will give you the stock sparkplug.
I need this plug for a 1999 KTM EXC 250 two stroke. Dont see it listed?
Brian A on May 15, 2017
BEST ANSWER: I looked into this for you and it looks like we only carry the Resistor Sparkplug for your machine.
NGK Resistor Sparkplug
NGK Resistor Sparkplug
Will this plug fit 2017 polaris outlaw 110cc?
A shopper on Jan 31, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does this have to be gapped for a 2007 rmz 250?
Derek E on Oct 27, 2016
BEST ANSWER: These plugs come pre gapped.
Will this fit my 03 yz125 with a Athena 144 big bore kit if so what is the correct gap? It’s a me bike for me
Michael P on Jul 10, 2019
RM Cash ProgramParts Finder