BD Diesel 1040360 Common Rail Fuel Relief Valve Shim Kit | 2004.5-2009 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax & Dodge RAM 2500/3500 6.7L Cummins

Features:

• Adjusts common rail fuel pressure settings
• Helps eliminate low rail pressure codes
• Improves fuel delivery under heavy load
• Designed for Duramax and Cummins engines
• Enhances rail pressure consistency and control
• Compatible with 6.6L Duramax and 6.7L Cummins
• Easy 1-hour do-it-yourself installation
• Durable shims resist wear and pressure fatigue
• Supports better throttle response and drivability
• No tuning required for installation
• Legal in all 50 states
• Includes replacement parts for peace of mind

Get The Most Out Of Your Diesel System

If you've been chasing better performance or trying to clean up low rail pressure codes, this BD Diesel Fuel Relief Valve Shim Kit might be exactly what your truck needs. It’s a small, inexpensive upgrade that makes a big difference in how your Duramax or Cummins engine responds under load. Whether you're towing heavy or pushing your tune to the edge, this kit helps maintain consistent fuel pressure where it matters most. It gives your common rail system a firmer grip on fuel delivery, which translates to smoother acceleration and stronger performance. You won’t need a tuner or complicated setup, just a basic install that takes about an hour and you’re good to go. Once installed, you’ll likely notice better throttle response and fewer pressure-related issues, especially under stress. For anyone serious about diesel performance, this is one of those low-cost upgrades that delivers solid results.

Designed For Reliable Pressure And Long Term Gains

The BD Diesel 1040360 Common Rail Fuel Relief Valve Shim Kit is engineered to enhance the fuel pressure stability in your 2004.5-2009 GM Duramax or 2007.5-2018 Dodge Cummins engine. This kit modifies the factory fuel pressure relief valve by adding precision-machined shims, which increase the spring tension and allow the rail to hold more consistent pressure. That improvement reduces the chance of rail pressure dropping under load, a common issue that can trigger check engine lights or limit performance. With stronger retention, your fuel system stays dialed in even during demanding driving situations. Installation is straightforward and typically takes about one hour with basic tools. The kit does not require tuning adjustments and includes replacement parts to ensure a reliable fit. It's a 50-state legal modification that’s emissions-friendly and built to handle real-world abuse without compromise.

Fits: 2004.5, 2005, 2006, 2007, 2008, 2009 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax & Dodge RAM 2500/3500 6.7L Cummins

Notes:

• Fits 2004.5-2009 GM Duramax and 2007.5-2018 Dodge Cummins
• Designed to adjust factory fuel pressure relief valves
• Not compatible with vehicles outside listed model years
• Installation time is approximately 1 hour
• No tuning or calibration required after install
• Helps prevent low rail pressure trouble codes
• All sales are final – no returns accepted
• Limited stock available – while supplies last
• Legal for sale and use in all 50 states
• Covered by 12-month/12,000-mile parts warranty
• Includes necessary replacement parts in the kit
• Professional installation recommended for optimal results