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Your cart is empty.Max-Fire(R) Ultra-Spark(R) performance spark plug wires are manufactured from highest quality materials to help deliver maximum voltage - ensuring the ultimate performance. These wires have an extremely high EMI/RFI suppression along with a very low resistance to help deliver the most spark possible. They feature a heavy duty 8. 5mm diameter silicone jacket to protect the Kevlar spiral wound core from heat, moisture and chemicals. Max-Fire offers two levels of spark plug wires; Ultra-Spark 500 and Ultra-Spark 50. Ultra-Spark 500 is a great choice for replacing OEM wires and are value priced. They feature high quality leads that deliver 500 ohms of EMI/RFI noise suppression with low resistance. They are ideal for daily drivers and for budget builds, offering the best combination of value and performance. Ultra-Spark 50 spark plug wires are engineered for high performance engines that need all of the voltage they can get for maximum power output. They are made with wire leads that deliver a low 50 ohms of resistance per-foot for maximum EMI/RFI noise suppression. This makes them ideal for engines with aftermarket high performance upgrades that require maximum voltage.
Griffin
Reviewed in the United States on February 22, 2025
2012 6.0 GMC, install was smooth and quick. NGK laser iridium plugs (IZTR5B11) works well with these at the appropriate gap, small but noticeable improvement with acceleration and mpg. Mine were original with 115k miles. dielectric grease included.
Food4Thought
Reviewed in the United States on July 14, 2024
I’ve installed these on a couple of vehicles along with new spark plugs and they fit perfectly are easy to snap into place. They may not be the cheapest option out there but you get what you pay for which is peace of mind with some high quality, value for your money plug wires. First install on a gen 2 Yukon was about 100k miles ago and they are still working perfect so I did not hesitate to buy them for a second vehicle. Added bonus the red wires give a nice look to the engine compartment.
Adam Pierce
Reviewed in the United States on February 2, 2024
Oh man, what a difference. Swapped out AC Delco wires for these and my engine runs clean again. Note: also put in new Bosch platinum plugs. But wow, what a difference. Like new again. Running a 2007 Escalade with the 6.2 V8.
lrchops
Reviewed in the United States on December 23, 2024
I really like these heavy duty Edelbrock plug wires. The only issue I have is they need to be about 1" Longer for the perfect fit. These did fit my Vortec 6000 LS 6.0 364ci, but there was no slack. It is a tight fit.
TZ
Reviewed in the United States on October 19, 2024
2011 5.3 Silverado 4x4Installed these the same time I swapped in a set of NGK Iridium plugs.(see other review)Can not say whether it was the plugs, wires, both.But, one or both really woke the 5.3 up. As well as eliminating an annoying miss at idle.Bought used with 160k miles on it. Was running original equipment AC Delco plugs and wires. The originals? Not out of the realm of possibility.But one, the other, both were causing the miss.Which is now MIA.
Adel
Reviewed in Saudi Arabia on April 18, 2024
قمت بطلب المنتج مرتين ويصل تالف شكرا أمازون
Ali
Reviewed in Saudi Arabia on September 16, 2023
👍🏻
Thomas Bennett
Reviewed in Canada on March 12, 2023
Bought junk ones before and misfired but bought these and trucks running awesome full power back and the quality of the wires are great
G37 Man
Reviewed in the United States on March 14, 2022
The fact that the plugs came with the hear shields were a plus but not only the deciding factor. Unfortunately for MSD the shipping time didn't jive for when I needed them so I compared the those factors and when with the Edelbrock's and I could not be happier. First I swapped out the old factory wires and plugs. GM/AC Delco wires with a set of Dragon Fire wires and Iriduim Delco plugs. Results were fair and then the car dropped a code that cylinder seven was misfiring. Checked wires and plugs and found that those Dragon Fire high heat plugs were crap. Though they said they were made in the United States I bet these were an eBay ripoff from China. The Edelbrock's came in and they fit perfectly on the 5.7L V8 under the hood of my 1999 Chevrolet Corvette. Install was easier than I imagined especially after I was just underneath the hood for a swap out months earlier. The start up is on point, idling is smooth, responsive off the line and a noticeable difference in gas mileage. Highly impressed and would recommend them anytime.
Mihyar
Reviewed in the United Arab Emirates on September 13, 2021
Amazing .. perfect .. fit into my camaro 2010 LS 3 perfectly .. strongly recommended.. all my car issues solved .. no vibration.. no lag .. the engine running smoooooooothly with big difference.. really thanks 😊 🙏
Jesus Hernández Mercado
Reviewed in Mexico on October 10, 2021
Los cables llegaron en perfecto estado. Cambia bastante la sensación en el auto.
J. Perry
Reviewed in the United States on January 15, 2021
These cables are built well, rated well on nearly every review I could find on the interweb and came with everything I needed to swap out the OEM ones. These come with quality metal heat shields and are the perfect length (I've had some brands that were too long). A little red color under the hood looks nice too. I can only assume they are working well since I have not felt nor has the PCM recorded any misfires. I will say that my RFI noise in my radio is totally gone now so their shielding must be good. Either that or my old ones were really terrible. I definitely recommend these cables!
Rey G.
Reviewed in the United States on March 1, 2019
Bought these to go along with my other ignition work on my 2007 Tahoe 5.3L. It has been time to do a tune up as my truck was throwing CEL PO301 codes here and there. I figured the truck is nearing 188K and it's been nearly 90-100K on the previous wires and plugs. I purchased this wireset along with NGK iridium plugs and Red High performance ignition coils. The wires are a little longer then the ACDelco performance ones I had on before but it was perfect since my new coils needed longer wires.It took me about 1.5 hours to get all 8 installed, very impressed as the truck started right up and no more misfires. I sat in the truck for a bit to see if I could feel the misfire vibrations. The vibrations are very minimal and practically gone and the 5.3 LS V8 has it's natural feel again. The test drive was great so time will tell if all these parts hold up and perform as their manufacturers claim.We will see and I will update later down the road. (no pun intended)
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