Ram Drop-In Wire Harness

Why Choose FASS?

See more here at Why FASS or review our craftsmanship standards at FASS Craftsmanship

At FASS, we don’t rush products to market, we “Strive for perfection & settle for excellence”. That’s why our systems have a failure rate of less than .5%, and why diesel owners across the country trust us to protect their investments. Whether you’re daily driving your Cummins-powered Dodge/RAM or building horsepower, the FASS Drop-In Series gives you peace of mind and performance you can feel. Register your system with FASS to activate the limited lifetime warranty.