EVIL ENERGY is an automotive aftermarket brand offering parts and kits for vehicle fuel delivery, intake, cooling, exhaust, suspension, and related systems. Its range is geared toward performance upgrades, replacement needs, and custom builds, including LS swaps and carbureted or fuel-injected applications.

Fuel system products include electric fuel pumps, fuel cells and auxiliary tanks, filters, pressure regulators, carburetors, fuel rails, and complete fuel-delivery kits. The brand also sells PTFE, CPE, and other fuel hoses, return lines, and fittings such as AN, NPT, and quick-connect options. Additional products span oil catch cans and coolers, radiators, fans, intercooler components, exhaust parts, coilovers, wheel spacers, air-intake components, and electrical accessories.

EVIL ENERGY offers individual components as well as bundled kits, with examples designed for LS swaps and fuel systems compatible with E85, gasoline, or diesel. Customers can shop online, access order tracking and support, and explore resources including downloads, a blog, and a forum. The brand also provides customer service by phone and offers membership, rewards, and an ambassador program.