DENSO PK20TT PLATINUM T T Spark Plugs, 6-Pack

Last updated date: July 13, 2020

DWYM Score

9.3

DENSO PK20TT PLATINUM T T Spark Plugs, 6-Pack

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We looked at the top Spark Plugs and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Spark Plug you should buy.

Editor's Note July 13, 2020:
Checkout The Best Spark Plug for a detailed review of all the top spark plugs.

Overall Take

Featuring a platinum-titanium twin tip, this spark plug is superior to other models on the market. It improves ignitability and is a reliable, long-lasting option. Both platinum and titanium are also known for their ability to prevent corrosion and erosion.


In our analysis of 12 expert reviews, the DENSO DENSO PLATINUM T T Spark Plugs, 6-Pack placed 4th when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

The patented DENSO Platinum TT Spark Plug has a twin-tip design to improve ignitability and extend reliability. Until recently, this twin-tip design could only be found in the most technologically advanced automobiles. But now DENSO is offering this cutting-edge technology in a platinum-titanium design. Conventional platinum plugs use platinum for only the center electrode, while the DENSO Platinum TT Spark Plug features platinum on the center electrode and a titanium-enhanced alloy on the ground electrode for increased durability and minimized tip erosion. Both precious metals fight corrosion and erosion, ensuring superior spark performance and maximum spark plug life capable of extended operation in excess of 60,000 miles. In addition, the secondary tip on the ground electrode results in less obstruction of spark growth, while still maintaining the same gap. With this in mind, if your vehicle exhibits bad spark plug symptoms including slow acceleration, poor fuel economy, or engine misfires, consider DENSO for your performance spark plug replacement.

Expert Reviews

Expert Summarized Score

10.0
3 expert reviews

User Summarized Score

9.4
478 user reviews

What experts liked

The Denso (4503) PK16TT Platinum TT Spark Plug is our choice for the best budget-friendly spark plug as it provides nearly all the performance-enhancing features of iridium but at a fraction of the cost. While a platinum spark plug such as this can provide less longevity than their iridium counterparts, the Denso 4503 isn’t far behind. It uses a platinum disc and electrode tip to provide solid performance. Those who purchased and reviewed this spark plug appreciated that it was compatible with a number of different vehicle makes and models, and came highly recommended by their mechanic. A couple of reviewers noted that they needed to re-gap their plug to fit, but most had no issues. With a price tag of about $3, this spark plug is a solid choice for those looking for a spark plug option on a budget. It has a rating of 4.5 on Amazon with nearly 400 people reviewing it, which we think goes a long way in convincing motor heads that this budget-friendly pick is just as good at improving engine performing as its more expensive counterparts.
- Motor Day
It works faster compared to other plugs. It can help you save fuel. It has dielectric strength. It can withstand any stress.
- The Washington Note
If you’re in the market for solid all-around spark plugs that are easy on your wallet, look no further then Denso 4504 PK20TT Platinum Spark Plugs. These value-priced platinum plugs pack a whole lot of performance, efficiency, and durability for a downright reasonable price. Featuring a dual-platinum construction, with a platinum disc and platinum electrode tip, these spark plugs provide a reliable spark to generate smooth, reliable combustion of the air-fuel mixture. This translates to great engine dependability, fuel efficiency, and performance. Another impressive feature is purified alumina powder, which is used as an insulator to increase thermal conductivity for maximum longevity. There are a few faults that we found with these double-platinum spark plugs. Occasionally, the gap was incorrectly set on some of the plugs. This is why it’s critical that you inspect the gap and adjust it accordingly. In addition, these double-platinum plugs cannot match the quality, performance, and longevity that iridium spark plugs boast. Nonetheless, we believe that Denso 4504 PK20TT Platinum Spark Plugs are some of the best affordable spark plugs for your car, truck, or SUV.
- The Drive

What experts didn't like

It does not work on all types of cars. May cause misfire. May not work on bikes.
- The Washington Note

An Overview On Spark Plugs

All machines that use gasoline engines are outfitted with spark plugs. This includes automobiles, lawnmowers, watercraft and aircraft. Spark plugs are responsible for creating the electricity needed to ignite the fuel mixture to start the combustion process and turn on the engine. Depending on the type of machine, you will most likely be able to replace the spark plugs on your own, without having to schedule an appointment with a mechanic.

As you begin shopping for the best spark plug, you’ll want to first make sure the plug meets International Organization for Standardization (ISO) and Society of Automobile Engineers (SAE) standards. You don’t want to invest money in a spark plug that won’t deliver reliability and durability.

Look for a spark plug that is able to improve your gas mileage and provide a faster start. For example, the NGK G-Power Spark Plug, 4-Pack uses a G-power platinum alloy that enhances its performance. The ground and center electrodes are able to retain a precise gap, while also creating a greater spark.

Review the spark plug’s outer shell next. You’ll find the Champion RC12YC Spark Plug uses a special TinTac and ULTRASEAL shell to protect the spark plug from corrosion. Corrosion is a spark plug’s enemy and will lead to the plug needing to be replaced prematurely.

Examine the design of the spark plug’s tip next. For example, the DENSO PLATINUM T T Spark Plugs, 6-Pack has a specially designed twin-tip that increases its ability to ignite. Others are made from a .6 millimeter laser-welded fine platinum that reduces the voltage required to start the engine.

Consider a spark plug that is designed to handle intense conditions if you’re into power sports. The E3 Spark Plugs Power Sports E3 Spark Plug is a great choice for this, as it’s made using a yttrium-enhanced alloy to that reduces side wire temperature by 8%. It’s also made with colder heat ranges, so you can make modifications to increase performance.

The Spark Plug Buying Guide

  • It’s important that you always double-check that the spark plugs are compatible with your vehicle before you purchase them. There are two ways to do this. You can contact the manufacturer directly and ask a customer service representative, or you can use the compatibility tool at the top of the product page of certain websites. All you need to do is select your car’s year, make and model from the drop-down boxes and click the “check fit” button.
  • YouTube is flooded with step-by-step videos that will visually guide you through changing your machine’s spark plugs, whether that’s your lawnmower or family automobile.
  • If you have a four-cylinder vehicle, you’ll need four spark plugs. Vehicles that have six cylinders require six spark plugs. It’s important to know how many spark plugs your automobile needs before placing an order, otherwise, you may end up ready to do the job without the right number of plugs.
  • There are a few symptoms you need to keep an eye out for that will let you know your spark plugs need replacing. They include a decrease in fuel efficiency, slower acceleration and engine misfires.
  • As you compare the prices for spark plugs, you’ll need to make sure you are comparing the per-piece price. So, if the spark plugs come in a set, you’ll need to divide the total cost of the plugs by the number of pieces in the set. When you do this, you’ll discover that the NGK G-Power Spark Plug, 4-Pack and the DENSO PLATINUM T T Spark Plugs, 6-Pack are among the most affordable. You’ll pay a moderate price per piece for the Champion RC12YC Spark Plug, while the E3 Spark Plugs Power Sports E3 Spark Plug comes in on the higher end.