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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
NGK 6664 FITS: Iridium IX Spark Plug Box of 4 (BR7EIX) Spark PlugsNGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Outstanding acceleration, high fuel efficiency and durability
- Fine iridium tip ensures durable and consistent spark
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2009 | Benelli | Velvet 125 | Base |
| 1974-1975 | Harley-Davidson | SX125 | Base |
| 1979 | Honda | Accord | Base |
| 1979 | Honda | Accord | LX |
| 1977-1980 | Honda | FL250 Odyssey | Base |
| 1989-1990 | Honda | FL400R Pilot | Base |
| 1979-1980 | Honda | Prelude | Base |
| 1973-1978 | Honda | XL175 | Base |
| 2011-2014 | Husaberg | TE250 | Base |
| 2011-2014 | Husaberg | TE300 | Base |
| 2014-2016 | Husqvarna | TE250 | Base |
| 2014-2016 | Husqvarna | TE300 | Base |
| 1989-1992 | Kawasaki | JB650 Jet Mate | Base |
| 1989-1996 | Kawasaki | JF650 TS | Base |
| 1986,1988-1995 | Kawasaki | JF650 X2 | Base |
| 1991-1995 | Kawasaki | JL650 SC | Base |
| 1986-1988 | Kawasaki | JS300 | Base |
| 1987-1991 | Kawasaki | JS300 300SX | Base |
| 1976 | Kawasaki | JS400 | Base |
| 1977-1992 | Kawasaki | JS440 | Base |
| 1987-1993 | Kawasaki | JS650 650SX | Base |
| 1980-1982 | Kawasaki | KE175 | Base |
| 1978-1983 | Kawasaki | KL250 | Base |
| 1981-1984 | Kawasaki | KLT200 | Base |
| 1979-1980 | Kawasaki | KLX250 | Base |
| 1978 | Kawasaki | KZ200 | Base |
| 1974-1977 | Kawasaki | KZ400/D | Base |
| 1977-1978 | Kawasaki | KZ400A Deluxe | Base |
| 1978-1979 | Kawasaki | KZ400B | Base |
| 1978 | Kawasaki | KZ400C Special | Base |
| 1979 | Kawasaki | KZ400H LTD | Base |
| 1975-1977 | Kawasaki | KZ400S Special | Base |
| 1980-1982 | Kawasaki | KZ440A LTD | Base |
| 1980-1981 | Kawasaki | KZ440B/G | Base |
| 1980-1983 | Kawasaki | KZ440D LTD Belt | Base |
| 1977-1980 | Kawasaki | KZ650B/F | Base |
| 1977-1979 | Kawasaki | KZ650C Custom | Base |
| 1980 | Kawasaki | KZ650E LTD | Base |
| 1966-1967 | Kawasaki | W1 | Base |
| 1968-1969 | Kawasaki | W2SS Commander | Base |
| 1969 | Kawasaki | W2TT Commander | Base |
| 2006-2016,2018-2019 | KTM | 250 XC | Base |
| 2006-2018 | KTM | 250 XC-W | Base |
| 2006-2019 | KTM | 300 XC | Base |
| 2006-2018 | KTM | 300 XC-W | Base |
| 2016 | KTM | 300 XC-W Six Days | Base |
| 2015-2016 | KTM | Freeride 250 R | Base |
| 1959 | MG | MGA | Base |
| 1965-1967 | Porsche | 911 | Base |
| 1973 | Porsche | 911 | E |
| 1967,1973 | Porsche | 911 | S |
| 1973 | Porsche | 911 | T |
| 1979 | Scorpion | Whip 340PR | Base |
| 1990-1991 | Sea-Doo | GT | Base |
| 1989-1996 | Sea-Doo | SP | Base |
| 1993-1996 | Sea-Doo | SPI | Base |
| 1983-1987 | Ski-Doo | Alpine | Base |
| 1984 | Ski-Doo | Blizzard 5500 MX | Base |
| 1982-1983 | Ski-Doo | Everest 500 | Base |
| 1982-1983 | Ski-Doo | Everest 500E | Base |
| 1979-1980 | Suzuki | DS185 | Base |
| 1996-2000 | Suzuki | DS80 | Base |
| 1972-1973 | Suzuki | GT380 | Base |
| 1972-1974 | Suzuki | GT550 | Base |
| 2001-2004 | Suzuki | JR80 | Base |
| 1974-1975 | Suzuki | RL250 | Base |
| 1977 | Suzuki | RM80 | Base |
| 1970-1976 | Suzuki | TS250 | Base |
| 1976,1978-1983 | Yamaha | DT100 | Base |
| 1974 | Yamaha | GP246 | Base |
| 1979-1983 | Yamaha | MX100 | Base |
| 1990-2000 | Yamaha | RT100 | Base |
| 1975,1979 | Yamaha | TY175 | Base |
| 1974-1977 | Yamaha | TY250 | Base |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 2406 reviews
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Product Reviews
★★★★★ 5
Super cute
Color: Bunny (Mauve), Size: Small
Super cute and fuzzy. Definitely perfect size for a puppy and not too loud. The fur is very soft and the nose is sown on not a hard piece that can be chewed on. Very good quality too.
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Reviewed in the United States on June 3, 2026
★★★★★ 4
Normally amazing
Color: Spiky Ball (Blue, Orange), Size: Medium
We have purchased these slightly spiky dog balls several times for our very strong jaw heavy chewer dogs and they’ve been amazing. They don’t break down they don’t get torn apart the squeakers don’t even pop out of them.
So we ordered another package because we’ve lost a few outside to the lawnmower… oops and the package that got delivered today had only one ball that squeaks and the other does not. THIS IS A PROBLEM ! Unfortunately my female dog got to the new squeaking ball first and my male got to the non-squeaking ball and he was NOT happy. Basically once they claim a ball it’s theirs and the other dogs don’t go near the ball they claimed. So he’s following my female around and every time she squeaks the ball and I’m just waiting for him to attempt to take it from her causing damage to her. Normally… These are amazingly fun, tough, durable but also squeaking balls (that’s rare in a tough ball) that my dogs absolutely love.
This time just got a bad batch I guess. When they squeak the dogs LOVE them. After several months of play the squeaker might break inside of the ball but the ball never comes apart or gets damaged. And we as the owners love that they don’t break down are not able to be ripped or torn even by our very strong jawed and big jaw muscle dogs.
They are also great for in the house play because they’re small enough that they fit completely inside our dog‘s mouth but obviously not small enough to get swallowed so when we throw them in the house for fetch the dogs can jump up and catch them fully in their mouth so they don’t cause any damage to the walls when they hit the walls. They’re not super heavy but they’re incredibly durable.
Definitely worth the price especially if you have heavy chewers or big jaw muscle dogs.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Best fun indestructible toy
Color: Crinkle Duck (Yellow), Size: Large
Truly indestructible no matter how much our oittie tries. She has owned it for three months works at destroying every day with no success. She carries it everywhere. Best purchase for chewer, more fun than the popular rubber heavy duty toy. Do not hesitate your pup will thank you for this fun distraction.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
My dog loves this toy!
Color: Bunny (Gray), Size: Large, Color: Bunny (Gray), Size: Large
High quality, big toy, perfect for a medium to large size dog. After a few months of serious chewing I had to buy another one, but well worth the money! Rocky loves it.
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Reviewed in the United States on June 11, 2026
★★★★★ 4
Great toy but if your dog is an aggressive chewer, please think twice.
Color: Crinkle Chicken (Brown), Size: Large
I received this on May 23rd and on June 8th, after playing with this thing every day, our recently acquired 36 lb dog finally ripped it open and got out all the plastic and the squeaky part. Lily Belle will miss you, chicken.
Lily loooooved this toy! She'd toss it in the air, chew on it, pull it with her teeth etc. but as much as she loved it, we won't replace it. It's just not durable enough for her.
If your dog is an aggressive chewer, you might want to try a different toy. I hate that this lasted just a smidge over two weeks because Lily seemed to truly enjoy this toy.
RIP, squeaky chicken!
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Reviewed in the United States on June 9, 2026