JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8

Wires are nice a thick, price is on point and shipping was fast. What more can you ask for. Quality after several months and no issues, would definitely buy again.

Just installed these on my son's 2005 Chevrolet Suburban (5.3L) and they work perfectly. The old AC Delco's were in rough shape and one of them snapped when it was removed. Contrary to some of the review's I didn't have any issues with installation of these wires as they all have plenty of clearance (might need to clock them accordingly) and the boots on the spark plug offer the same positive 'click" when installed on the spark plug so you know they are fully seated. The only issue I found, was getting the plug to align on the coil side was a little finicky as the connector is offset, it's not a big deal as you apply pressure while you rotate the boot back and forth and it will seat fine. We'll see how long these last and I'll update my review accordingly, but I found the quality to be excellent (especially for the price) and the car does seem to be a bit more responsive off idle and idles buttery smooth (fyi - I didn't have any misfires of rough idle before). Good wires and I'd recommend them!!!

Awesome product. great price great product. improved my fuel economy on my 6.0 vortec tremendously. paired with some 41-162 Ac Delco plugs. Would buy again.

PRODUCT WAS PERFECT. PRICE, QUALITY AND FIT.

I love how these wires look. Definitely better than OEM. They look and feel solid and durable. I bought these for a 3007 Suburban 5.3. The fit was great for cylinders 1-7. On cylinder 8, the the wire pushed against the AC Dryer heat shield. I can see this wire, for this one cylinder, rubbing against the heat shield. I'm unsure how long this wire will last. The l OEM wires were not as thick, so they wear easily routes around the heat shield. Overall, I love the wires and their appearance.

Fixed My Misfire and Boosted MPG — Worth Every PennyI bought these for my 2003 Escalade with the 6.0L engine after dealing with some frustrating misfires. I was hopeful they’d help—and they did more than that.Not only did they completely eliminate the misfires, but I’m now getting 4 more miles per gallon. That kind of improvement means these parts will pay for themselves in no time.Solid performance, great value — I’m all in at 5 stars. If you're having similar issues, don’t hesitate. This is the fix.

Great performance for half of the price. Thick cables easy to install.

I put these on my 1999 Chevrolet Silverado and I can tell that my fuel mileage is better than it was I would purchase these again and I am going to for my 2012 Chevrolet Silverado