Best Spark Plugs for Jeep Wrangler JK Review in 2021

Searching for the best spark plugs for Jeep Wrangler JK? On this page, you will find the top consumer products from the category Spark plugs – presented in a detailed comparison. Among the problems that can cause your Jeep JK to malfunction, those related to the electrical system. However, if you notice some difficulty in starting your Jeep, you should not only check the state of charge of the battery: spark plugs also play an important role. By installing the spark plugs for Jeep JK, which you can also buy, you can solve some of the inconveniences that can occur at the time of ignition.

A periodic check of the spark plugs and their maintenance is an essential condition to always have the car at maximum efficiency. If you notice black or burnt parts on the body of the spark plug or see the presence of blisters or bubbles it may be time to replace it. Check them all out, or jump to the Buyer’s Guide

Comparison Table – Best Spark Plugs for Jeep Wrangler JK 3.6L Engine (Updated October, 2021)

What options do Jeep owners have for obtaining efficient spark plugs? Your Jeep will perform better if you use the right spark plugs. So if you are searching for one of the most effective kinds of spark plugs for Jeep Wrangler JK 3.6, this short article is for you. Right here we have put together a checklist of the best spark plugs for fits for Jeep Wrangler (2012-2021). Take a look at these leading products!

Frequently bought together
Ignition Coil for Jeep JK 3.6
Ignition Coil for Jeep JK 3.6
MSD 82736
These MSD coils will certainly boost the efficiency of your Jeep JK. You can very easily install them yourself. The performance result is boosted thanks to a cautious option of much better accessories and reliable winding ratios.
CHECK PRICE
ImageProduct 
Best Choice
Champion 9407 RER8ZWYCB4 Iridium

Champion 9407 RER8ZWYCB4 Iridium

  • Reliable and durable
  • Withstand at all engine loads
  • Great for maximum performance
  • (Pack of 6)

Also great
NGK LKR7DIX-11S (93175 Iridium IX) review

NGK LKR7DIX-11S (93175 Iridium IX)

  • Long life
  • Great performance
  • High reliability
  • (Pack of 4)

Best Value
Autolite APP5701 Double Platinum review

Autolite APP5701 Double Platinum

  • Optimize engine performance
  • Have a longer life
  • Improved fuel economy
  • (Pack of 1)

Non-Slip Grip
Bosch 96337 Double Iridium  review

Bosch 96337 Double Iridium

  • Boost cold starts
  • Foster optimum performance
  • High reliability
  • (Pack of 1)

Ergonomic Fit
Denso (5353) IXUH22 Iridium Power  review

Denso (5353) IXUH22 Iridium Power

  • High structural strength
  • Provides faster spark flame growth
  • Delivers great performance
  • (Pack of 1)

Unrivaled Power
E3.82 E3 Premium  review

E3.82 E3 Premium

  • Increase power
  • Reduce fuel consumption
  • Improve hydrocarbon emissions in long-term use
  • (Pack of 6)

RELATED PRODUCTS
Fel-Pro MS 97205 review

Fel-Pro MS 97205

  • Plenum Gasket Set
  • Ensure a perfect fit and premium seal
  • Unsurpassed quality
  • Head sets contain gaskets and seals

Comparison Table – Best Spark Plugs for Jeep Wrangler JK 3.8L Engine (Updated October, 2021)

There are several varieties of Spark Plugs for Jeep Wrangler JK 3.8. Some of them have two or more electrodes, flared design, plasma eruption. All manufacturers have spark plugs with various kinds of electrodes in their assortment. Here, we have the best spark plugs available on the market with a great price-quality balance that fits for Jeep Wrangler (2007-2011).

Frequently bought together
Spark Plug Wire for Jeep JK 3.8
Spark Plug Wire for Jeep JK 3.8
NGK 53141
All NGK performance wires have original tools similar to connections, however, are created with superior-top quality cabling.
CHECK PRICE
ImageProduct 
Best Choice
Champion RE14PLP5 (7440)     review

Champion RE14PLP5 (7440)

  • Deliver more powerful performance
  • Alloy maintains stable operating temperature
  • Faster throttle response
  • (Pack of 1)

Also great
NGK V-Power LZTR5A-13 review

NGK V-Power LZTR5A-13

  • Great quality and reliability
  • Offers long lasting durability
  • Increases fuel economy
  • (Pack of 1)

Best Value
BOSCH 8116 Double Platinum review

BOSCH 8116 Double Platinum

  • 3X longer service life
  • Provides excellent ignitability and performance
  • High durability
  • (Pack of 1)

Non-Slip Grip
Autolite XP5426 Iridium XP review

Autolite XP5426 Iridium XP

  • Improved ignitibility performance
  • Designed for better overall durability
  • No gap erosion for longer plug life
  • (Pack of 1)

Ergonomic Fit
E3 Spark Plugs E3.66 review

E3 Spark Plugs E3.66

  • Designed to increase power
  • Reduce fuel consumption
  • Improve hydrocarbon emissions
  • (Pack of 1)

Unrivaled Power
Denso 5349 ITL16 Iridium Power review

Denso 5349 ITL16 Iridium Power

  • Better Performance
  • Increase overall power
  • Great for extreme race conditions or for the daily driver
  • (Pack of 6)

RELATED PRODUCTS
ENA Ignition Coil Pack Compatible review

ENA Ignition Coil Pack Compatible

  • Design to ensure fast
  • Easy installation
  • Superior performance and reliability
  • High durable

Best Spark Plugs for Wrangler JK 3.6L/3.8L Engine Review


1. Champion – Best Spark Plugs for Jeep JK 3.6


Champion Spark Plugs for Jeep

The copper core of the two electrodes is central and lateral. On the one hand, current losses at low voltage are reduced, on the other hand – not the highest resource. At the same time, the price is at the level of the top models. A positive point is a good power increase, especially at high speed, when cheaper analogs give an unstable spark.

Note that every time the engine is running, the spark plug is subjected to a hard test, which causes the wear process. However, a faulty spark plug will easily lead to starting problems, excessive fuel consumption, or lack of engine control, without showing increased exhaust emissions otherwise. So that’s why always make a spark plug replacement in time!


PROS:
  • Trusted and reliable brand
  • Easy to install
  • High durability
  • Less Voltage Needed
CONS:
  • None found yet



2. NGK – Best Spark Plugs for Jeep Wrangler JK 3.8


NGK Spark Plugs for Jeep

One of the specimens by the duration of use. Drivers note in reviews that the NGK spark plug does not lose its characteristics up to a mileage of about 30,000 miles. Iridium coating, hence the highest cost of the magazine. Substantial savings over cheap spark plugs don’t work. The cost is exactly as much as the kit takes longer. However, during all this time, you will be sure not only of a stable engine start, but also of normal fuel consumption.

This spark plug is capable of creating the spark itself, which is essential for fuel combustion. It is also able to create a perfect air-fuel mixture. Ignition is simplified and the engine is more efficient.


PROS:
  • Reliable threads
  • Very economical
  • Excellent performance
CONS:
  • Most expensive



3. Autolite – Best Recommended Spark Plugs for Jeep Wrangler JK


Autolite Spark Plugs for Jeep

The Autolite Platinum spark plugs the same as Iridium promotes quick ignition to start your car. In addition, it features air-to-surface gap technology, which is quite unique. It helps produce a powerful spark with efficient combustion performance.

In addition, to speed up starting, the Autolite spark plug has the ability to quickly reach self-cleaning temperatures. This feature also gives the vehicle smoother acceleration.


PROS:
  • Optimized engine performance
  • Built according to OEM specifications
  • User-friendly installation
CONS:
  • Gap is not accurate



4. Bosch – Power Spark Plugs for Jeep Wrangler JK


Bosch Spark Plugs for Jeep

The Bosch brand name is well known for its car equipment. The spark plugs of this reference brand, which are appreciated by the largest manufacturers, are also among the most widely sold. By choosing this model of the spark plug, you make the choice of quality. Made of a Nickel and Yttrium alloy, it is super resistant. It will protect the engine and the catalytic converter efficiency.

This model of the spark plug from Bosch allows good combustion of the air-fuel mixture. It thus guarantees better starts, as well as good acceleration and acceleration. In other words, driving comfort will be optimal. This better combustion will also save fuel, which is a real plus.


PROS:
  • Better ignitability and performance
  • Trusted and reliable brand
  • longer service life
CONS:
  • Most expensive



5. Denso – Spark Plugs for Jeep JK 3.6-lit V6


Denso Spark Plugs for Jeep

The Denso spark plug has one of the smallest diameters of the center electrode. Consequently, this feature boosts the pulling capacity of the plug, creating incredible sparks for quick ignition of the car.

In addition, this Denso spark plug has a special U-groove and tapered cut ground electrode. With this, faster sparks can be produced with greater flame growth. At the same time, it reduces thermal hardening, which allows the plug to last for a long time.


PROS:
  • Highly resistant to corrosion
  • Quick ignition
  • Supreme heat protection
CONS:
  • Deviations may not be accurate



6. E3 Spark Plugs – Best Spark Plugs for Jeep JK 3.8


E3 Spark Plugs for Jeep

This is a spark plug is much cheaper but no worse than resilience than spark plugs made of copper, platinum, and also iridium. Unlike platinum spark plugs, the E3 Spark Plugs has a DiamondFIRE electrode that is protected to the shell with 3 legs that assist facilitate excellent heat transfer and boost turbulence in the cylinder.

Thanks to the components of this metal, the version offers much faster ignition, stable engine operation, and also reduced fuel consumption.


PROS:
  • Long life
  • The affordable price
  • Improve hydrocarbon emissions
CONS:
  • It is more difficult to install

Why choose Champion spark plugs?

A brand that has been manufacturing spark plugs for over 100 years, Champion designs quality spark plugs for the motorsport industry. Iridium and precious metal technology for the long life of your spark plugs. Expertise recognized by automobile manufacturers, the Champion range of spark plugs offers maximum performance whatever the engine or ignition type. They produce a more concentrated spark that allows for accelerated combustion, reduced fouling, and resistance to the most extreme conditions, diameters of the center electrode. Consequently, this feature boosts the pulling capacity of the plug, creating incredible sparks for quick ignition of the car.

Buyer’s Guide

Spark plugs and spark plug wires for Jeep Wrangler JKSpark plugs are one of the most durable and cheapest parts in any car. When properly taken care of, they last up to 100K miles, or more. And that’s a lot because the average US citizen drives 14-15K miles a year. They don’t last forever, though, even if you’ve got a set of the best spark plugs for Jeep. The most obvious sign of faulty plugs is an engine misfire.

This happens when the spark plugs wear out. And without ignition, there won’t be combustion to start the engine. So, if that’s exactly what’s happening to your motor, it’s time for a spark plug replacement. In this guide, we’ll replace not only the spark plugs, but also the wires. Alright, follow my lead, and let’s begin!

How to change spark plugs and spark plug wires on a Jeep Wrangler JK

Preparing for the Job

Don’t worry: plug replacement is a rather simple and straightforward process. All you’ll have to do is follow my instructions, and you’ll be done in no time! The passenger side might prove to be a bit tricky, though. Now, before we get into the meat and potatoes, here’s a list of everything you’re going to need. This stuff doesn’t cost a lot, by the way, and most drivers already have at least some of these tools in their garages:

  • A 3/8-inch ratchet
  • An 18-inch extension for the ratchet
  • A 3/8-inch torque wrench
  • A 5/8-inch spark-plug socket
  • A regular 3/8-inch drive socket
  • A 3/8-inch swivel socket
  • Mechanical fingers
  • A gapper for the plugs
  • A brand-new set of spark plugs
  • A wire set (one will do) and a wire tray
  • A decent bottle of dielectric grease
  • Anti-seize
  • Protective gloves

Yes, I know that’s a really long list, but don’t forget that a repair shop will charge you 200-300 US dollars for the labor alone, if not more. This way, you’ll be able to save some bucks and spend them on something else. If you do everything right, we’ll be done in 1/1.5 hours, or even sooner.

Getting Started

Change spark plugs a Jeep JKBefore getting your hands dirty, the first thing you should do is disconnect the negative battery cable – for safety purposes. With that done, start with the spark plug wire of the 2nd cylinder (it’s the one on the driver’s side front). The boot will probably resist. Try twisting it a bit to loosen it up. And don’t forget to remove any dust, pollen, or debris that you’ll probably see around the cylinders. The actual spark plug comes next.

To remove it, you’ll need a ratchet with an extension, a spark-plug socket, and a swivel. All going smoothly, I hope? Good, then use that gapper and adjust the new plug so that it’s at 0.50. Here’s how you do it: place the gapper right between the center and the grounding electrodes and slide it until you feel slight resistance. If the gap is wrong, bend the electrode (in or out depending on the gap). Only apply force to the grounding electrode, not the center one!

Installing the New Spark Plug

Spark plugs for Jeep Wrangler JKGrab your brand-new and shiny plug with the spark plug socket. Do you see a hole inside the cylinder’s head? That’s exactly where the plug should go. Start by turning it with your hands – turn the socket clockwise. It’s very important to be careful and gentle at this stage. The plug shouldn’t be hard to insert into the head. If it’s not fully “cooperating”, don’t push it. Remove the plug, check for any damages, and go again.

Once the plug is sitting inside the cylinder nicely, use the torque wrench on the plug. Set it to 12ft. lbs. for the best result. Now it’s time for the dielectric grease to enter the scene. Apply a relatively small amount on the spark plug and coil pack terminals. Next, install the wire. Repeat everything we just did with the rest of the wires and plugs on the driver’s side.

Moving on to the Passenger Side Plugs

How to change spark plug wires on a Jeep Wrangler JKAlright, here’s where it gets a bit tricky. Now we have to disconnect the wires, and you do that with light twisting movements when pulling the plugs away. And make sure that you remember which wires connect to the coil pack. Because if you don’t, that’ll cause you a lot of trouble. One way to go about this is to simply write the cylinder number on the wire boot (a sharpie should do).

Disconnect every single wire from the passenger’s side. To make some room for yourself, take out the crankcase vent hose and the retaining bracket (the one sitting on the heater hose). Lift the wire tray to remove the retainer. The wire assembly should be easy to access now. I highly recommend replacing the wire tray while you’re at it.

As for the spark plugs, the routine is basically the same as with the driver’s side front. There should be a couple of clips that attach the wires to the tray. Get rid of the clips and start replacing the wires. Do this one at a time so that you can keep track of things.

Finishing Up

To make things easier, attach the wire ends that are supposed to connect to the coil terminals to each other with tape. With that done, do your best to “push” the wires from the passenger’s side to the driver’s side. For this, the mechanical fingers tool will come in handy: use it to “fish out” the wires. Last, but not least, reattach everything that you disconnected earlier (the wires to the terminals, the crankcase breather hose, and the retainer).

FAQ

What brand of spark plugs does Jeep use?

The best spark plugs for Jeep JK 3.6, 3.8, is Champion because they design quality spark plugs and they offer the maximum performance of your Jeep!

How many spark plugs does a Jeep Wrangler JK use?

Usually, an engine of Jeep Wrangler JK uses 6 spark plugs and has six cylinders.

What spark plugs are good for my Jeep Wrangler JK?

One of the most important pieces of information in a spark plug is matching your engine's layout. Copper has high conductivity as well as affordable price, however also a much shorter life-span. More difficult platinum and iridium much more expensive, however were designed too much longer, yet keep in mind, the most effective fit is always the one developed for your engine.

How long to change spark plugs on Jeep Wrangler JK?

Half an hour to four hours. Specialists claim the procedure can take anywhere from thirty minutes to four hours, depending upon the Jeep. Ask your auto mechanic for a price quote prior to having the work done. Like lots of Jeep elements, Peck recommends remaining with the original manufacturer's spark plugs when changing them.

When should you replace spark plugs on Jeep Wrangler JK?

In case you have a new Jeep Wrangler JK or even an older used version, it's suggested that you change your spark plugs every 30,000 miles.

Where located Jeep JK spark plug?

Spark plugs in Jeep JK are normally divided equally throughout either side of the engine. Three spark plugs on each side.

That’s about it! Check the engine compartment and make sure you haven’t left any tools or anything else left there. Re-connect the negative cable (on the battery). Before starting the car, apply the brakes. The transmission should be in “neutral”, by the way – don’t forget that.

We will be happy to hear your thoughts

Leave a reply

Best Jeep Guide
Logo