31

NGK Spark Plugs - Set of 6

SKU: TR55-6

$10.99 Sale price

Model
Regular price $10.99

Economical performance and improved ignitability over standard NGK Spark Plugs original equipment manufacturer and racer approved.

  • Lowers ignition system voltage requirements
  • Greater ignitability and performance over conventional spark plugs
  • Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties
  • Increased fuel economy and lower emissions
  • Highly durable against electrical and chemical wear
  • Good performance spark plug

The TR55 is recommended for GTs. It can be used on near stock GTPs but we recommend a colder plug for boosted applications.

The TR6 is our most popular plug. It is well suited for 3.4" pulley'd Grand Prix. This plug will give you full mileage and doesn't require any special precautions for use.

When eliminating KR is top priority, when changing your plugs every 6k miles isn't an issue, or when you must push the limits of performance the TR8 race plug does the trick. It is 4 heat ranges colder than stock.

Iridium IX Spark Plugs (shown in bottom pictures) are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.

Iridium plugs burn clean and a colder range of plug can be used without the normally associated risk of plug fouling. TR55ix's are recommended for non boosted applications. TR6ix plugs recommended for low boost applications. The Iridium line of plugs are designed for maximum performance with maximum life. They will last 50k miles plus and perform better than the standard NGK plugs.

Iridium plugs cannot be gapped. The tip is too delicate for the gap to be changed. For those brave and wanting to try and regap, here are some tips from Denso: http://densoiridium.com/installationguide.php

Sold in set of 6.

You are viewing a product listed on the following platform:

3800

Economical performance and improved ignitability over standard NGK Spark Plugs original equipment manufacturer and racer approved.

  • Lowers ignition system voltage requirements
  • Greater ignitability and performance over conventional spark plugs
  • Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties
  • Increased fuel economy and lower emissions
  • Highly durable against electrical and chemical wear
  • Good performance spark plug

The TR55 is recommended for GTs. It can be used on near stock GTPs but we recommend a colder plug for boosted applications.

The TR6 is our most popular plug. It is well suited for 3.4" pulley'd Grand Prix. This plug will give you full mileage and doesn't require any special precautions for use.

When eliminating KR is top priority, when changing your plugs every 6k miles isn't an issue, or when you must push the limits of performance the TR8 race plug does the trick. It is 4 heat ranges colder than stock.

Iridium IX Spark Plugs (shown in bottom pictures) are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.

Iridium plugs burn clean and a colder range of plug can be used without the normally associated risk of plug fouling. TR55ix's are recommended for non boosted applications. TR6ix plugs recommended for low boost applications. The Iridium line of plugs are designed for maximum performance with maximum life. They will last 50k miles plus and perform better than the standard NGK plugs.

Iridium plugs cannot be gapped. The tip is too delicate for the gap to be changed. For those brave and wanting to try and regap, here are some tips from Denso: http://densoiridium.com/installationguide.php

Sold in set of 6.

Customer Reviews

5.0 Based on 31 Reviews
5 ★
97% 
30
4 ★
3% 
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3 ★
0% 
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LM
10/04/2019
Lee M.
United States United States

What I expected

Great replacement

GG
08/16/2019
Gordon G.
Canada Canada

Excellent products

Always work great for me !!

WW
07/11/2019
Willie W.
United States United States

Great spark plugs zzp always

Great spark plugs zzp always my first go to for my monte carlo ss

SC
05/12/2019
Steve C.

Just what I needed

My L32 Series III swapped '88 GT has had a stumble under hard acceleration. Chasing it with sensors wasn't solving the problem, but the NGK iridium plugs sure did! Throttle response is instant and continues through the power curve. I recently heard a YouTube car guy say iridium plugs don't really make a performance difference. Baloney! If you have a boosted engine, they are essential to getting the most from it.

AM
04/30/2019
Alex M.

Great plugs at an amazing price!!

Awesome value!! The genius gear heads at ZZP did the research and know exactly which temperature range plugs to run with various mods. I'm a master automotive technician and law enforcement upfitter so I'm very serious about quality and attention to detail and I'm a big fan of zzperformance!!

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