TRQ ignition coils will have your engine running like new. TRQ ignition coils are manufactured to precise specifications using premium raw materials to optimize each vehicle's ignition system. To ensure peak performance, TRQ recommends replacing ignition coils in sets to prevent electrical output imbalances. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.
Product Features
High dielectric epoxy and reinforced bobbins for extended service life
Rubber, Silicone, or Phenolic Resin Shell: Prevents premature boot wear
Application Specific Design: No modifications required
Complete repair to restore your engine to like-new condition
Item Condition:New
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories. Shipping is not available to Canada.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses. Final shipping costs are available at checkout.
How to Replace Ignition Coils 2001-07 Toyota Highlander
Created on:
Tools used
Socket Extensions
10mm Socket
Ratchet
1. Removing the Ignition Coils
Remove the 10mm nuts from the engine cover
Remove the engine cover
Disconnect the wiring harness
Remove the 10mm nut from the ignition coil
Remove the ignition coil
2. Installing the Ignition Coils
Insert the ignition coil into the engine
Tighten the 10mm nut to the ignition coil
Connect the wiring harness
Place the engine cover on
Tighten the 10mm bolts to the engine cover
Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!
Open the hood. We have to pull the release inside the car. It's just inside right around your left knee on the driver's side. Need to release the secondary, or safety release. Just kind of feel around for it. This one is right here. Squeeze up.
Going to remove these two top nuts that hold on the appearance cover. They are 10 millimeter, so I'm using a 10 millimeter socket ratchet and extension. Should just thread of real easily. So there's our appearance cover, it's got some foam inside. That's just for noise, just keeps the noise down from the valve train.
Here are your four coil packs. One for each cylinder. They're held in to the valve cover with a 10 millimeter bolt, one for each. Push down on the lock and remove the connector. These can be brittle, sometimes they break. The lock does. This procedure will be the same for the other three. Use a ratchet, extension, and 10 millimeter socket to remove this 10 millimeter bolt. Put this bolt aside.
Now we need to remove the coil. Might have to wiggle it because there is a seal in here and just break it free. Once it's free, it should come right up. There's our coil pack.
It does have some oil on it because our valves cover gasket has been leaking. Reinstall the coil. Line up the opening with the amounting bolt hole. Move the harness out of the way so it doesn't get pinched. Push right over the spark plug and reinstall the bolt. Once it gets tight I'm just going to stop. Put the connector back in.
Now I can reinstall the plastic engine cover. I wiped it down with a rag and cleaned some of the dirt off of it. Make it look a little nicer. Get lined up over those studs. Sit right down reinstall the nuts. Actually just do these hand tight. They don't need to be super tight. Job is complete.
Thanks for watching. Visit us at 1AAuto.com for quality auto parts, fast and free shipping, and the best customer service in the industry.
ICA61478
In Stock
Product Reviews
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4.30/ 5.023
23 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
18
1
0
1
3
Perfect fit
Kenneth
April 10, 2018
These coils fit just as advertised on my 2003 Toyota Rav4. Great price and fast shipping.
I brought this for my 2002 camry. BAD ??
P
September 15, 2018
II brought this for my 2002 camry. Well one straight out the packaging box was bad. The connector kept slipping off. And I am receiving the same misfires with these new coils on Two and Four. The shipping was excellent!
Thanks for your help
C
September 27, 2018
I will buy again with A1 auto thanks to your affordable prices my car is in the road again
Electronic Parts
James
October 26, 2018
The ignition coils work perfectly and fit perfectly. Thanks 1A!
1 A Auto.Great service. THANKS
A
November 7, 2018
I ALWAYS MAKE ORDERS ONLINE ON 1A Auto and always I am very happy with 1aauto.com.
I will never change this servis page or website.
Every order come on time and when something going wrong thay fixed my problems by calling them with no problems.Thanks 1aauto.com.
Works great!
Sean
June 3, 2019
I was skeptical, but I just put these things in and it runs like a new car!
I will post here when they fail, so we can get an idea about their lifespan/reliability, but these things may be the real deal and be quality parts :)
Ty 1a!! This was my 1st time buying parts on an online store, next time I need something I'll check you guys out again!
Great products
L
July 30, 2019
Everything I was expecting, perfectly packaged. Thanks!
Bad coil
N
October 16, 2019
after 5000 miles
Bad gas mileage
S
November 6, 2019
I bought it for my 2003 Camry because one of my ignition coil was misfiring. The ignition coils from 1AAuto looked similar to the original ones, but poorly made: The connector part was not made the same as original and do not make the "click" sound when connected. Also, although the length of the coil appears the same, mine was a very slightly longer and it needed to push it in with force (which is not the case for the original ones) to fit in - I really hope it does not cause a problem. I think the worst part is the bad gas mileage. With the original coils, it never lower than 22mpg (city) before misfiring happened but with new ones it only runs up to 20mpg. I found that this product is made in China, and by the appearance of how it was made (and poor function), I am afraid that these might be copied products... If you are looking for performance as good as the originals, it is not a right choice.
Toyota RAV4 2.4l
Robert
December 20, 2019
Works great no issues so far.
Toyota ignition coils
P
March 15, 2020
Didnt last
Great prices for great part
N
January 19, 2021
I just noticed the other day that this is the only place that I buy my part at. I dont trust any other place to get my parts, the deal are so good that I dont even bother to look at other places and not once have I had a problem with any of the part I have bought
My first purchase from 1 aauro
Y
January 23, 2021
I ordered coils for my camry, 1 aauto had the lowest price, compared to other companies, although I recieved the merchandise 2 weeks late, but not of there fault, it was usps who was the cause of the delay, but the good news is that, the product is good, no defects, the correct coils, and I'm very pleased with the customer service. It was my first order, and I'm happy.
Completely Satisfied Customer
Gus
May 17, 2021
It was my first online purchase with 1A.Auto. The price and speed of delivery of my order was really faster than expected. I shopped the price of my order and A1 Autos price was cheaper than local parts businesses where I live. I will definitely use A1 Auto again Regards, A very Satisfied Customer
Danny
October 8, 2021
Great fix and easy replace
New Coil Set
Willie
October 9, 2021
Parts were a direct fit, car immediately sounded better and ran smoother.
Great product sp far
Thomas
November 17, 2021
Great so far on my 06 Rav4. Perfect fit, great price and they all work!
Good product
Alan
January 4, 2023
No issues been over a year
Michael
May 2, 2023
Those are not holding up very well I'm fixing to put the ones that was on it back on it because those start skipping in the morning if it's cold and don't quit until it warms
OEM quality
Thomas
July 9, 2023
So far works great..
It works great !
WILLIAM
March 3, 2024
Works well !
Toyota coils
John
June 24, 2024
They work fine.
Quality parts
Jose
December 7, 2024
Great parts
Customer Q&A
What's the estimated mileage for these?January 7, 2017
Ron T
10
At this time it is hard to provide a mileage guideline for use of these coils, however we do back these products with a limited lifetime warranty in the event of failure during intended use to ensure that as long as you own the vehicle and if there is a failure caused by a manufacturer defect you are covered.
January 9, 2017
Alex P
What would be a notable difference between the Denso original one and this one?September 29, 2017
Francis G
10
I have been really satisfied with the 1A auto product. No difference. Changed all of them on my ford explorer and honda civic. Works great!
September 29, 2017
Hilario B
10
The coils are exact replacement item s. There is no difference in form nor function between them and Denso with a much better value from 1A.
September 29, 2017
Michael A
10
Good 100%
March 27, 2018
Marvin G
10
Nothing
January 19, 2021
N A
10
No difference-fixed the problem
May 17, 2021
Gus R
I know these are electrical parts but has to be some kind of liability if the parts are defective. I'm looking to purchase some ignition coils but the reviews got me over thinking it!?!February 5, 2022
Junior B
10
This is backed by our limited lifetime warranty. In the event anything should fail due to manufacturing defects during intended use, we will replace the part(s) free of charge. This warranty covers the cost of the part only.
February 5, 2022
Cristina P
Customer service
877-844-3393
Monday - Friday 8:00am - 9:30pm ET Saturday - Sunday 8:00am - 4:30pm ET
Toyota is a registered trademark of Toyota Motor Corporation. 1A Auto is not affiliated with or sponsored by Toyota or Toyota Motor Corporation.See all trademarks.
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