S&S Double-Barrel Fuel Rail for 6.7L Cummins Engines

[1.1] S&S advances the bar for common rail power

Advancements made in common rail diesel injector technology have pushed factory fuel rails well past the intended capacity they were designed for. As the injected quantity increases, so does the drop in rail pressure during the injection event. Increasing the fuel rail volume will offset this by having more pressurized fuel on demand. That is the main benefit of the S&S Diesel Motorsport Double-Barrel Fuel Rail, along with many others.

Keys for Success:

For frame of reference, the 2007.5-’18 6.7L Cummins fuel system was designed to operate at 1,800 bar. Even though the Double-Barrel Fuel Rail has been tested to 3,000 bar, it’s not recommended to run the injectors at that pressure. As pressure increases linearly above 1,800 bar, return through the injectors increases exponentially. This will prematurely wear the injectors and over-work the high-pressure fuel pumps.

The Double-Barrel Fuel Rail comes as a bare rail without any plugs, fittings, sensors, or pressure relief valves. This allows the fuel rail to be custom-configured for each application. Contact S&S Diesel for additional parts needed. It’s recommended to use NVH isolators (HPL-ISOLATOR-CU) on injector lines for all competition applications, even with a factory fuel rail.

Features:

• 2.5x (154% more) volume than a stock 6.7L Cummins fuel rail
• Maintains pressure better throughout the injection event
• More injected quantity for the same injection duration
• Improved rail pressure control due to more consistent sensor feedback
• Modular design for maximum flexibility of feed port, sensor, and PRV placement
• Made in the USA

Application:

• 6.7L Cummins Max Effort Competition

Technical Specifications:

• Fuel Compatibility: Diesel
• Weight: 4.35 kg (9.6 lbs)
• Maximum Dimensions: 369 mm x 120 mm x 48 mm
• Volume: 66.1 cc (4.03 ci)
• Tested Pressure: 3,000 bar
  (43,511 psi)
• Inlet Ports: 2x M14 x 1.5 male
• Injector Ports: 6x M18 x 1.5 male
• Auxiliary Ports: 4x M18 x 1.5 female