SKU: 2418144256

NGK Spark Plug - LFR6A (6668)

Sale price$35.54 Regular price$39.49
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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14

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Description

NGK Spark Plug - LFR6A (6668)NGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs, each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles, ATVs & UTVs in Australasia. With NGK's dedication to quality, outstanding reliability and state of the art manufacturing techniques, you can rely on your NGK

NGK have over 80 years of experience in spark plug manufacturing and are the world leader in spark plug technology. NGK has an extensive range of spark plugs, each with their own unique characteristics specifically engineered to its application and designed to suit a broad range of motorcycles, ATVs & UTVs in Australasia. With NGK's dedication to quality, outstanding reliability and state of the art manufacturing techniques, you can rely on your NGK Spark Plugs.

Don’t just ask for a spark plug, insist on NGK.

The 98% pure copper core delivers increased heat dissipation for more reliable starts and reduced risk of overheating. While cold-rolled threads prevent cross-threading and damage to cylinder heads and a trivalent plating eliminates the need for anti-seize. Complete with a high-grade alumina silicate ceramic.

The principle of NGK's patented V-grooved spark plugs is technically simple but very effective. A V-groove is situated in the centre electrode. This forces the spark to occur at the outer edge of the centre electrode where it is easier to ignite the air-fuel mixture. In addition, the voltage required to produce a spark is reduced. These two features give the benefit of improved ignitability, especially in modern low-emission lean-burn engines, even under extreme operating conditions.

Shell

  • Thread Size: 14mm
  • Thread Pitch: 1.25mm
  • Seat Type: Gasket
  • Resistor Value: 5K Ohm
  • Reach: 26.5mm (1.04")
  • Hex Size: 16mm (5/8")
  • Terminal Type: Solid
  • Overall Height: ISO
  • Gap: 0.9mm (0.035")

Centre Electrode

  • Material: Nickel
  • Type: V-Cut
  • Size: 2.5mm
  • Projection: Projected

Ground Electrode

  • Material: Nickel
  • Type: Standard
  • Quantity: 1

Specifications

  • Heat Range: 6
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 2418144256

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4.7 ★★★★★
Based on 6 reviews
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J
Verified Purchase
JS
Grantham, US
★★★★★ 5
Extremely tough!
Style: Gorilla, Size: Large (Pack of 1)
These are seriously so much better (and cheaper) than any other supposedly "strong/durable" type toy like this. We have 70lb very strong chewers and they chew through everything. Can not have stuffies. They do eventually chew through but it seriously takes awhile. Especially in comparison to other brands. I will say it says "recommended for dogs under 35lbs" but I also work for houses where I recommended these for their dogs which were smaller and they wouldn't chew on because too tough. But they also accidentally bought the large which is what I buy my big dogs. So the large is GREAT for big dogs. If you have a dog under 35lbs I'd get the size small. Also .... says you can stuff treats. You really can't. Which my dogs don't need. They just love to chew on. I call it their bubble gum because when they FINALLY get a chunk off(which again takes awhile.... as in over a week) they will fling the pieces into the air and chew on like a piece of bubble gum lol... they love it! I don't notice a difference in breath or anything but I don't use the toothpaste either. I just bought to see if tough and they are!! And again price is clearly so much better. I hate spending $20+ on a toy they destroy in a day.
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Reviewed in the United States on December 30, 2023
A
Verified Purchase
Alanna
Omaha, US
★★★★★ 3
Beware if your dog likes to chew
Style: Gorilla, Size: Large (Pack of 1)
It’s super cute and my dog loved it, but it didn’t last very long. My dog started peeling off pieces of it and eating it within three hours of play. If you have a dog that takes it easy on the toys I would recommend this one. Otherwise I recommend passing because there’s no way it’s safe for them to be swallowing these pieces.
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Reviewed in the United States on March 26, 2026
J
Verified Purchase
Josh K.
Lowell, US
★★★★★ 5
Lasted pretty long for my aggressive chewer
Style: Gorilla, Size: Large (Pack of 1)
Right away I was excited with this product because of the smell, texture and thickness. Smells minty fresh which does help with breath smell. The texture is great, had smooth areas and rigid areas all while being soft and durable. The product is pretty thick, which I needed for my Pit-Bull. She doesn’t chew much but, when she decides to she is 110% in and dedicated to destroying that item. She chews through most things in less than a day. This product however lasted years before I started to notice damage. It is one of her favorite toys. She liked it so much I bought two, one for the house and one for the car for road trips. It’s the perfect toy to keep a chewer distracted inside a car, along side a deer antler, which also helps with dental hygiene. She gets dental hygiene compliments every trip to the Vet. We use multiple different things to help with her teeth and breathe but, I think this toy contributes the most to her healthy teeth. I call it a toy because she plays with it all the time. Definitely will keep buying long as they keep making it. This product is a must for all dogs, it’s almost perfect for my Pit-Bull
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Reviewed in the United States on February 24, 2021
T
Verified Purchase
TGue
Dallas, US
★★★★★ 5
Currently surviving a SUPER CHEWER!
Style: Gorilla, Size: Small (Pack of 1), Style: Gorilla, Size: Small (Pack of 1)
Welcomed a pomeranian/terrier mix to the family recently. Although he is small he is very capable of tearing things apart! He has destroyed many, many types and brands of toys. When he grew tired of destroying those he turned to objects in my house, walls, furniture, railing etc! I've tried different brands and textures and this is one of only 2 brands he hasn't outright destroyed! He's had this toy for almost a month now and it has come out of this time almost completely unscathed! You'll notice there's a little damage to one of the hands and top of the head but hes managed to destroy toys in an hour or less, so I consider this a big win and will absolutely replace with the same product when the time comes! There's a hole, I think for treats. I haven't used that. It also has a smell, almost like baby powder. In any event, absolutely worth the price which I found to be great to begin with. My dog loves it, and me and my house are soo glad he's chewing on this! If you have a super chewer (I'd never heard of that) I strongly suggest this toy. They also have larger ones for bigger breeds!
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Reviewed in the United States on September 6, 2025
M
Verified Purchase
Marie Phillips
Lake Worth, US
★★★★★ 4
Durable Chew Toy That Actually Holds Up to Strong Jaws
Style: Gorilla, Size: Large (Pack of 1)
This Hammer for Pets Super Treadz Gorilla Dental Chew Toy has been a reliable option for a heavy chewer, especially for a large breed with a strong bite. The material feels tough and well-made, and it stands up well to consistent chewing without immediately breaking down like softer toys tend to do. It also gives a bit of dental benefit by helping reduce plaque and tartar buildup during play, which is a nice bonus since brushing isn’t always realistic. The textured surface keeps it interesting enough to hold attention for a while, and it doesn’t splinter or create a mess. Overall, it’s a solid, durable chew toy that works well for strong chewers who tend to destroy most standard toys quickly.
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Reviewed in the United States on May 6, 2026

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