Granatelli Motor Sports Xtreme Pro Series Coil Pack (99-04 4.8L, 5.3L Silverado 1500)Find parts that fit my vehicle

More Spark, More Power. Give your Chevrolet Silverado a much-needed extra spark. Improve your engine performance with the GMS Xtreme Pro Series Coil Pack. A guaranteed perfect fit on your truck, these coil-on plugs will give you up to 15 horsepower boost when used on normally aspirated trucks and up to 35 HP gains for turbo and nitrous trucks. This coil pack will also significantly improve your truck’s throttle response while adding 10% gas mileage. Lastly, this coil assembly is designed to deliver a 400% increase in power.

OEM Approved Build. This coil-on plug is designed to fit OEM specs so installing these on your Silverado won’t render your warranty void. Each coil plug is equipped with a stainless steel connector cable with stainless steel snap lock plug connectors. It also comes with high-temperature silicone boots and 8mm jacket with fiberglass reinforced braids that can withstand temperatures of up to 500°F. These coil-on plugs utilize a patented design that will work perfectly with your Silverado’s stock fuel injection system ensuring zero ohm resistance and zero RFI/EMI interference.

Easily Installs. Designed for easy installation, you can have these coil-on plugs installed in less than an hour. Basic hand tools are required for installation.

Limited 90-Day Warranty. For a period of 90 days, these Xtreme Pro Series Coil Pack is protected by a limited warranty. While under the warranty period, Granatelli Motor Sports (GMS) will cover any manufacturing flaws in both material and workmanship. Visit the manufacturer’s website to read more about the full warranty disclosure.

Application. This GMS Xtreme Pro Series Coil Pack is designed to fit 1999-2004 Chevrolet Silverado 1500 models equipped with the 4.8L or 5.3L engine.

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