| Make | Model | Year |
|---|---|---|
| Chevy | Avalanche | 2007-2009 |
| Caprice | 2011-2016 | |
| Corvette | 2005-2007 | |
| Express | 2006-2017 | |
| Silverado 1500 | 2000-2005 | |
| Silverado 2500 | 2000, 2014-2016 | |
| Silverado 3500 | 2014-2016 | |
| SSR | 2005-2006 | |
| Suburban | 2001-2002, 2006-2009, 2013, 2016-2018 | |
| Tahoe | 2000-2013 | |
| Trailblazer | 2006-2009 |
Ignition Harnesses (558-307) by Holley®. Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.
The amount of air and fuel that reaches your engine determines how much horsepower it ultimately generates. Modifying your exhaust and air intake systems will help maximize airflow, but you also have to add more fuel to your engine to make it operate at its optimum. Explore their selection of high-quality performance fuel system parts that are specifically engineered to increase the amount of fuel flowing into your injector per minute. These parts will not only give you horsepower gains but will also help improve fuel economy. Designed and manufactured by industry professionals who use advanced materials and technologies, they are durable, efficient, and perform superbly. Performance fuel system parts they carry will withstand the toughest abuse and offer long-lasting service life. Plus, they are easy to install and, in most cases, require no modifications to your vehicle.
Holley® being an undeniable leader in fuel systems for over 100 years, Holley offers a wide range of performance carburetors, fuel pumps, intake manifolds and engine dress–up products for street performance, race, and marine applications. Holley carburetors have powered almost every NHRA Pro–Stock champion and every NASCAR Sprint Cup team for 40 years. As a single solution, or partnered with products from other Holley companies such as Hooker, Flowtech, NOS, Weiand, and others, the Holley products provide the quality and performance you've been looking for.