The CNC Fab four-line feed kit is one of the most popular and most debated fuel system upgrades for the 7.3-liter Power Stroke. In a new video, the channel PowerstrokeBoiz gives a quick and dirty overview of how to install this kit on a heavily modified 7.3-liter, showing what it takes to get the system bolted up and how it fits with other common aftermarket parts.

Installing the CNC Fab Four-Line Feed Kit

The installation begins with some significant disassembly. To get access to the fuel ports on the cylinder heads, the alternator, its bracket, and the power steering pump all have to come off the front of the engine.

On this particular truck, which already had an aftermarket Irate Diesel T4 turbo kit and a fuel bowl delete, the process was a bit more straightforward. The kit itself consists of a central distribution block and four pre-bent stainless steel lines that run to each corner of the heads. The video provides a helpful tip for builders, noting that they had to leave the mounting bolts for the distribution block loose to get the trickiest line threaded in before tightening everything down.

Compatibility with a T4 Turbo

A major concern for anyone with a modified 7.3-liter is how new parts will fit with their existing setup. The video confirms that this CNC Fab kit fits perfectly with the newer style Irate Diesel T4 turbo kit and its oil drain line. The narrator takes a moment to show the difference between the new, simpler standpipe drain on the turbo and the older base-plate-style drain that Irate used to sell, clarifying that this install was done with the updated design.

A Quick and Clean Install Overview

The PowerstrokeBoiz video can be used as a visual guide for anyone looking to tackle this popular upgrade. The overview shows that with some patience and a bit of wrenching, the kit fits cleanly and looks great in the engine bay, even when surrounded by other high-performance parts. For builders who want to run the controversial “dead-head” four-line feed, this install shows that it’s a straightforward job that can be done in the home garage.