Spark Plugs and Wires
Chevy Blazer
Toyota Previa
Toyota Sienna

Which spark plug: denso pk20tr11 or ngk bkr6ekpb11 ngk is almost twice the price of denso; both are listed in the manual so is it worth the difference?

User Avatar
Wiki User
September 13, 2011 1:48PM

Lifted from a post on ToyotaNation.Does yours use the OEM twin ground platinum electrode spark plugs? They are specifically used for the later model Gen 4s (Camry) with twin coil packs and distributorless. These use a waste spark ignition, therefore the plugs fire twice during a 4 stroke cycle. If you use a single ground electrode, it will severely shorten the life of the plug. e.g. 6,000rpm on your Camry engine will be like running 12,000rpm on another car, since the plug fires twice as often. You can also try double platinum plugs, i.e. plugs with a platinum chip also on the ground electrode. What happens in waste spark ignition is that 1 coil pack fires 2 spark plugs simultaneously, e.g. cylinder 1 and cylinder 4. So while one spark plug is firing normally, spark jumps from center electrode to ground electrode, the other spark plug is firing in reverse, i.e. from ground electrode to center electrode, therefore there is high wear on the ground electrode, this is where the platinum chip on the ground electrode gives longevity. Plugs like Denso Iridium SK20R11 and VK20 also have a platinum chip on the ground electrode. NGK Iridium IX and Denso IK20 don't.

BOSCH R3 Platinum2 18-3770-8 spark plug is an alternative choice. Had replaced with these spark plugs for 2 years now, so far so good. By the way, the original stock Denso plugs were still very good after 100,000 miles (160,000kms). IMHO that they could go at least 200,000 miles before needing replacement.

Related Questions

User Avatar

the public listed company any one can view their web site and as for the listed not every one can view their website

User Avatar

what is the differences between public company and listed company

User Avatar

The coupons listed on coupons.com change almost daily. At the current time I do not see any nicorette coupons listed though.

User Avatar

The gray wolf overall is listed as a species of least concern. However, a few subspecies are listed as threatened or endangered.

User Avatar

In the United States alone, there are 496 animals listed on the endangered species list, and 735 plants listed on the endangered species list.

User Avatar

A listed investment is a closed-end investment, while a quoted investment has visible market valuation. In a listed investment the manager does not have to worry about funds being withdrawn.

User Avatar

Just saw one listed for 75.00. Saw another listed for 1100.00. HUGE difference. I will keep looking

User Avatar

It is listed as "Near Threatened, not endangered. There is a difference in the listings.

User Avatar

Try mystocks.org/. They have reports about almost all USA stocks.

User Avatar

The thylacine is almost certainly gone. I say almost, because reports do come in, and some interesting videos. However, it is officially listed as "extinct".

User Avatar

get information from its opfficial website no it is not black listed because it is a independent institution n and giving out no {lakhs of students {almost every field

User Avatar

Almost 60,000 names are listed on the Australian war memorial however, there have been over 102,000 Australians killed in the wars so far.

User Avatar

Not yet! However, it has been removed from the endangered list (2016) and is now listed as a vulnerable species..

User Avatar

The largest religion in Austria is Roman Catholicism. Almost 3/4 of the population is listed in this religion.

User Avatar

The difference in the 1N4007 diode and the 1N4007S diode is the voltage. The 1N4007S has a higher voltage but the meaning of the S is not listed.

User Avatar

Echinacea is listed among the botany that deer don't like to eat, but a hungry deer will eat almost anything. You can find more plants listed below, that deer prefer not to eat.

User Avatar

The VP is not listed as a model anyplace I can find.

User Avatar

. They are currently listed by the IUCN as vulnerable and in 2008, the US Department of the Interior listed the bears as threatened. Canada and Russia have the creatures listed as a species of concern. There numbers have increased from about a thousand to over 25,000. They are allowed to be selectively hunted due to their stable numbers currently.

User Avatar

Implied powers are powers that are perceived to be in place. Enumerated powers are powers that are specifically listed. An example of enumerated powers are the powers listed in Article I, Section 8 of the US Constitution.

User Avatar

The cheetah is considered vulnerable but is not currently listed as endangered. It has been extirpated from large parts of its former range, however.

User Avatar

The correct fluid is almost always listed on the top of the master cylinder resivoir fill cap.

User Avatar

A blind discount is defined as the difference in cost between the listed cash price for equipment and the reduced financed amount. It can also be the difference between the list price of a ca and a lower interest rate.

User Avatar

an ion has a different number of electrons and an isotope has a different number of neutrons then listed on the periodic table or your sample

User Avatar

it is basically the same thing, both are the powers listed in the Constitution that granted the rights of Congress