Fuel Rail Pressure Harness

Features:

• Fits 2001-2010 6.6L Duramax engines
• Clean, OEM-like installation design
• Simplifies fuel rail gauge wiring
• Plugs directly into factory harness
• Eliminates need for custom wiring
• Quick and easy to install
• Reduces clutter under the hood
• Ideal for rail pressure gauge setups
• One year limited warranty included

Make Rail Pressure Gauge Installs Quick and Clean

If you're planning to monitor fuel rail pressure on your 2001–2010 Duramax, the PPE Fuel Rail Pressure Harness is one of those upgrades that just makes the job easier. Instead of cutting, splicing, or trying to route your own wires, this harness plugs directly into the factory connector for a seamless, OEM-style setup. It’s designed specifically for GM Silverado and Sierra 2500HD/3500HD trucks with the 6.6L Duramax, so the fit is spot-on and the install stays clean. You get a reliable connection without the mess or stress, which means more time driving and less time fiddling under the hood.

Simplifies Installations Without Cutting Corners

What really makes this harness a solid choice is how well it blends function with simplicity. It eliminates the need to run extra wires across the engine bay and reduces the chance of electrical issues down the road. For anyone adding a fuel pressure gauge—whether for tuning, troubleshooting, or just peace of mind—it’s a small part that makes a big difference. The build quality is solid and it even comes with a one-year limited warranty, so you know PPE stands behind it. Whether you’re chasing power or just want to keep an eye on your system, this harness is a smart, hassle-free solution.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax