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NGK

NGK 3951 Spark Plugs TR55 (6 Pack)

  • Based on 5,087 reviews
Condition: New
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$21.40 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Oct 24 – Oct 25
Order within 3 hours and 29 minutes
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Features

  • Designed to operate over a much wider heat range than ordinary plugs
  • Resists carbon buildup and pre-ignition
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
  • NGK spark plugs are an OE cornerstone that have provided decades of reliable performance

Description

Sold in packs of 6.

Brand: NGK


Core Material: Copper


Thread Size: 14 milimeters


Top Material Type: Metal


Vehicle Service Type: Car,Truck,SUV,Lawn Mowers,ATV,Motorcycle,Scooter


Brand Name: NGK


Manufacturer Part Number: TR55


Number of Items: 6


Item Highlight: Replaces SP400 SP446 41-600 41-601 41-606 SP-413 869 284 AGSF22N AGSF23C AGSF32N R42LTS6 R43LTS6.


UPC: 087295139516


Unit Count: 6 Count


OEM Equivalent Part Number: 3333704-FORD,3539125-FORD


Included Components: 3951


Item Weight: 0.27 g


Manufacturer: NGK


Model Number: 3951


Manufacturer Warranty Description: Includes manufacturer provided warranty


Thread Size: 14 milimeters


Compatible with Vehicle Type: Car,Truck,SUV,Lawn Mowers,ATV,Motorcycle,Scooter


Automotive Fit Type: Vehicle Specific Fit


Core Material: Copper


Top Material Type: Metal


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 24 – Oct 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Quality and affordable priced spark plugs
*5/5 Stars* I've had the opportunity to use NGK spark plugs in my vehicle, and I'm thoroughly impressed. Here's why: *Key Features* - *Excellent Performance*: NGK spark plugs provide a reliable spark, resulting in improved engine performance and fuel efficiency. - *Durable Construction*: These spark plugs are built to last, with a long lifespan and resistance to wear and tear. - *Wide Range of Applications*: NGK offers a vast selection of spark plugs for various vehicles, making it easy to find the right one for your needs. - *Easy Installation*: NGK spark plugs are designed for straightforward installation, saving you time and effort. *Performance* NGK spark plugs have made a noticeable difference in my vehicle's performance. The engine runs smoother, and I've experienced improved fuel efficiency. *Recommendation* If you're looking for high-quality spark plugs that deliver exceptional performance and durability, look no further than NGK. They're a trusted brand in the industry, and their spark plugs are a great choice for any vehicle owner. ... show more
Reviewed in the United States on April 9, 2025 by Garrett Cunningham
    • Quality spark plugs at great price
NGK has long been my first choice In spark plugs for Japanese cars and motorcycles, but I usually stuck with OEM brands for American cars. Recently I needed a tuneup on both my 2004 F-150 and 2001 Explorer Sport. I wanted to keep the budget as low as possible so did a lot of shopping around for best prices. The only plugs I found for a lower price were either unbranded or some Chinese name I’ve never heard of. I may be cheap, but I’m not stupid, so I stuck with a quality brand that I know; NGK. I decided to go with the less expensive copper plugs for my Explorer instead of platinum because I don’t put a lot of miles on my vehicles and I couldn’t find any platinum plugs in a pack of 6, only 4 or 8, and the price for singles was considerably higher. Anyway, the only real advantage of platinum is longevity, and if I ever do manage to put another 50k miles on this car I’ll be happy to celebrate with a new set. But with my current driving habits both the car and plugs will most likely outlast me. So, a new set of NGK plugs, along with new NGK plug wires (also purchased from Amazon) has put the zip back into my Explorer. BTW, the plugs are assembled in the USA from Japanese components. ... show more
Reviewed in the United States on October 16, 2023 by Robert B. Sweeney
    • Quality but wrong for this vehicle
There are definitely a good quality product. Unfortunately, they did not fit the vehicle. They said they did, so. We had to return them, but we had no problems making a return. The company was very good about that
Reviewed in the United States on September 30, 2026 by robert
    • Spark plugs
Fit my 2001 Buick lasabre. Running much better.
Reviewed in the United States on September 13, 2026 by Amazon Customer
    • Great OEM replacement.
The search engine failed me on this one. A 2001 Cadillac SLS is a V8 engine. Without looking I ordered this 6 pack because it said it fit, technically 6 does fit into 8. I will just order 2 more. The plugs themselves are OEM, gapped, dependable and durable. Will increase my fuel economy, performance and run smoother. They were a great purchase. I just need to pay closer attention to the search results better. ... show more
Reviewed in the United States on September 1, 2025 by Titanium John
    • Great spark plugs. Fixed my misfire
I installed these in my Mercury that had a misfire/stumble and these plugs fixed it. Car runs smoothly now
Reviewed in the United States on September 2, 2026 by Robert S.
    • Wirked
Work on my car
Reviewed in the United States on September 13, 2026 by Virgil g.
    • Very accurate on shipping the right product.
Product was received on time and in great shape. They are a perfect fit.
Reviewed in the United States on August 22, 2026 by charles maylone

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