Product Description
The ATS 705-050-4290 Fuel Rail Pressure Plug is a must-have upgrade for 2004.5+ 6.6L Duramax engines looking to maintain consistent fuel rail pressure under high demand. Designed to eliminate pressure relief valve (PRV) leakage, this plug ensures maximum fuel delivery to support increased horsepower and improved engine performance.
Under heavy load or high-performance tuning, the factory pressure relief valve can open prematurely, causing a drop in fuel rail pressure and limiting power. This ATS plug replaces the factory valve, preventing pressure loss and helping maintain optimal fuel system efficiency.
Precision machined for durability and reliability, this upgrade is ideal for performance builds, towing applications, and tuned Duramax trucks requiring stable fuel pressure.
FAQ
Q: What does a fuel rail pressure plug do?
A: It replaces the factory pressure relief valve to prevent it from opening under load, maintaining consistent fuel pressure for improved performance.
Q: Will this increase horsepower?
A: Yes, by maintaining proper fuel rail pressure, it allows the engine to deliver full fueling potential, especially on tuned trucks.
Q: Is this required for tuning upgrades?
A: It is highly recommended for tuned or high-performance applications to prevent fuel pressure drop under heavy load.
Q: Is installation difficult?
A: Installation is straightforward for experienced installers and typically involves replacing the factory pressure relief valve.
Fitment
- 2004.5-2005 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax
- 2004.5-2005 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax
- 2006-2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax
- 2006-2007 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax
- 2007.5-2010 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax
- 2007.5-2010 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax
Key Features
- Eliminates factory pressure relief valve leakage
- Maintains consistent fuel rail pressure under load
- Improves performance and fuel delivery
- Ideal for tuned and high-performance applications
- Precision machined for durability
- Simple and effective upgrade
Specifications for ATS 705-050-4290
| Specification | Details |
|---|---|
| Part Number | 705-050-4290 |
| UPC | Not Available |
| GTIN | Not Available |
| Product Type | Fuel Rail Pressure Plug |
| Engine Compatibility | 6.6L Duramax (LLY, LBZ, LMM) |
| Model Years | 2004.5-2010 |
| Function | Replaces factory pressure relief valve |
| Material | High-strength steel |
| Installation | Direct replacement |
| Shipping Info | Standard Ground Shipping |
| Warranty | Limited Manufacturer Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
