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NGK

NGK 3951 Spark Plugs TR55 (6 Pack)

  • Based on 4,494 reviews
Condition: New
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$20.50 Why this price?
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30-day refund / replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Aug 30
Order within 13 hours and 25 minutes
Available payment plans shown during checkout

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: ‎NGK


Core Material: ‎Copper


Thread Size: ‎14 milimeters


Top Material Type: ‎Metal


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


Automotive Fit Type: ‎Universal Fit


UPC: ‎087295139516


OEM Part Number: ‎TR55


Manufacturer: ‎NGK


Item Weight: ‎0.01 ounces


Product Dimensions: ‎3.31 x 0.94 x 4.98 inches


Item model number: ‎3951


Manufacturer Part Number: ‎TR55


Date First Available: December 5, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 30

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Made my truck run good again
Good quality and price
Reviewed in the United States on August 18, 2025 by Jesse Hodge

  • Spark plugs came fast great price and in great shape!
Exactly what I ordered exactly what was described spark plugs came fast and in great shape. Nice improvement to the 4.3 V6 purrs like a kitten. Recommend this product and seller. Thanks
Reviewed in the United States on August 14, 2025 by Roger D

  • 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

  • Works well
They do what they're supposed to. All 6 came in good condition and all have been working for 6+ months
Reviewed in the United States on July 23, 2025 by Mark Bishop

  • Decent price for a known brand.
So far so good. Car runs smoother and idles better. Slight increase in MPG also.
Reviewed in the United States on July 30, 2024 by Matthew flash

  • NGK is a trusted brand
Why did you pick this product vs others?: price was good, I trust NGK anyway and my mistake for only getting 6, when I needed 8
Reviewed in the United States on July 4, 2025 by Norman

  • Very well made
Works amazing only ones I use for my Impala 05
Reviewed in the United States on July 19, 2025 by Emmanuel Ruiz

  • Ngk is the best
Ngk are the best spark plugs in my opinion I use them in every vehicle I have and will continue to use them never have any trouble with them always install them straight out the box can instantly feel the performance change
Reviewed in the United States on May 27, 2025 by ernesto

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