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

I was pleasantly surprised with the quality of these wires. They are twice the thickness of the original wires. Installed them with new coils and plugs on a 2013 Sierra with the 5.3 engine and everything is working great. They are slightly longer than the OEM wires but it wasn't an issue.

Good fit, easy to install especially with included heat shield. Compatible as described for the vehicle. Performance is day and night, I also changed plugs I don’t know what hp increase there was but it is significantly noticeable. Thanks for a great product at a fair price!

Nice fit well made real thick

These were great! I tried a different, cheaper set, and they were junk. These plugs though were slightly higher in price but much more durable and made of better quality material. Im happy.

Great deal for a great price. Installed them on my 04 Chevy Silverado 2500HD 6.0. They worked so good I bought another pair for my 06 Chevy Silverado 2500HD 6.0. Combined with the NGK laser iridium's I purchased on Amazon you can't go wrong. Improves gas mileage and throttle response.

Seemed pretty thick and decent ones for the money. Good pick overall!

Love the look and performance of these.

Perfect fit for my ls engine.

Solved missing problem, thick leads, quality item AAA+++

Great quality for perfect

التثبيت صعب نوعا مابعد الاستخدام سنه كانله. ممتازين تم الفك عدة مرات ويعملون مثل الجديد

Excelente calidad, material y en mi chevrolet silverado 2016 motor 5.3 funcionan sin problema alguno

Me sorprendió la calidad de los cables