Leak Rail Assembly

Features:

• Designed for high-performance Duramax applications
• Improves fuel system reliability and consistency
• OE-level engineering for precise performance
• Eliminates common leak path under high pressure
• Prevents fuel rail pressure drop-off issues
• Tested using advanced validation equipment
• Built by diesel injection system experts
• Ideal for modified and tuned LML engines
• Supports consistent rail pressure under load
• Direct replacement for factory leak rail assembly
• Made for 2011–2016 GM 6.6L Duramax LML
• Manufactured to exceed standard diesel shop specs

Get Rid Of Pressure Problems Before They Start

If you’ve been building power in your 2011–2016 LML Duramax, then you already know how important consistent fuel rail pressure is to keeping your truck running strong. The Exergy E05-10510 Leak Rail Assembly is designed to solve one of the most common weak points in modified fuel systems by eliminating potential pressure leaks that rob performance. Whether you're pushing your truck hard on the track or just trying to maintain reliability after a tune, this upgraded leak rail helps ensure your fuel system holds steady when it counts. Rough idling, hard starts, and low rail pressure codes are often tied back to overlooked components like this one. Exergy's background in high-performance diesel engineering means this part is more than just a replacement, it’s a serious upgrade built with precision and backed by real-world testing. You won’t find gimmicks or inflated claims here, just solid performance from a company that knows diesel fuel systems inside and out. It’s the kind of upgrade that gives peace of mind when you’re demanding more from your truck.

Built With Precision To Handle Real Fuel Demands

The Exergy E05-10510 Leak Rail Assembly is engineered for the unique demands of high-performance diesel applications, specifically on the 2011–2016 6.6L Duramax LML platform. With a strong background in OE-level fuel system development, Exergy applies advanced testing processes to ensure this component performs under the most demanding conditions. Many stock or poorly modified rail assemblies become a pressure loss point as fuel demands increase, especially in tuned or heavily loaded trucks. This leak rail assembly is designed to eliminate that issue, maintaining consistent rail pressure and supporting reliable injector performance. What sets Exergy apart is their ability to analyze fuel systems beyond just flow numbers, using industry-leading diagnostic equipment to validate each component before it ever sees your engine. This attention to detail makes the leak rail ideal for builds where reliability and precision are critical. If you’re upgrading injectors, tuning your LML, or chasing better drivability under load, this is a smart addition to your fuel system.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Designed specifically for 2011–2016 Duramax LML engines
• Developed by industry experts in diesel fuel systems
• Eliminates common high-pressure fuel leaks under load
• Ideal for tuned or modified performance applications
• Not a cosmetic upgrade, addresses real fuel system issues
• Built using OE-level engineering and manufacturing processes
• Each unit is validated using advanced in-house test equipment
• Supports consistent fuel pressure for improved drivability
• Backed by Exergy's deep experience in fuel system diagnostics
• Recommended for customers experiencing low rail pressure codes