/live/media/SI/SI_PR444_Fro.jpg)
Standard Ignition PR444 Fuel Injection Pressure Regulator
| Brand | Standard Ignition PR444 |
|---|---|
| Adjustable | Yes |
| Contents | Includes Caution Sheet |
| Fuel Type | Diesel |
| Functions | Regulator |
| New or Reman | New |
| Number of outlets | 1 |
| Reference Port Included | No |
| Type | Returnless |
| Fits | Chevrolet, GMC, and Hummer · 51 vehicles |
Application-specific fit. Precision engineered for proper fuel delivery and engine performance.
Leak-resistant design. Built with robust engineering for greater resistance to leakage.
Adjustable returnless regulator. For diesel fuel systems with one inlet and one outlet.
Cross-references Bosch 0928400673, Dorman - OE Solutions 904-575 and Four Seasons 24152 for the same application. See all 10.
Fuel Pressure Control for Diesel Applications
Standard Ignition PR444 is a new fuel injection pressure regulator built for diesel fuel delivery systems that need stable pressure control and a precise fit. It is application specific for the listed Chevrolet, GMC, and Hummer diesel platforms, including Silverado 2500 HD, Sierra 3500 HD, and Express/Savana van applications.
Key Features
- Adjustable fuel injection pressure regulator for diesel systems
- Returnless design with 1 inlet and 1 outlet
- New construction with a robust sealing-focused engineering design
- Application-specific fitment for direct replacement use
- Includes caution sheet
- Standard Ignition PR444 cross-references Bosch 0928400673 and Dorman OE Solutions 904-575 for the same application
Detailed Description
Standard Ignition PR444 is engineered to regulate diesel fuel pressure for proper delivery and engine performance. The design is built for direct fitment on the listed Chevrolet Silverado 2500 HD and Silverado 3500 HD, GMC Sierra 2500 HD and Sierra 3500 HD, Chevrolet Express 2500 and Express 3500, GMC Savana 2500 and Savana 3500, plus 2006-2007 Chevrolet Silverado 3500 Classic, GMC Sierra 3500 Classic, and 2006 Hummer H1 diesel applications. The PR444 part number is also referenced in aftermarket interchange listings for related OE-style service needs.
What It Helps Address
- Unstable diesel fuel pressure
- Hard starting caused by pressure regulation issues
- Poor engine performance from incorrect fuel delivery
- Fuel leakage concerns at the regulator assembly
- Driveability problems tied to a failing pressure regulator
Installation Notes and Tips
Verify the vehicle’s year, make, model, and diesel fuel system configuration before installation. This regulator is a returnless type with one inlet and one outlet, and it does not include a reference port. Follow the caution sheet included with the part and confirm all connections are clean and properly seated before returning the vehicle to service.
Quality Assurance
Standard Ignition designs this regulator with application-specific engineering and leakage resistance in mind to address common OE failure points. The PR444 is a new replacement part intended for direct service on the listed diesel applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | — | N/A | — |
| 2012 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | — | N/A | — |
| 2012 | GMC | Sierra 2500 HD | 6.6L | V8 | — | N/A | — |
| 2012 | GMC | Sierra 3500 HD | 6.6L | V8 | — | N/A | — |
| 2011 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | — | N/A | — |
| 2011 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | — | N/A | — |
| 2011 | GMC | Sierra 2500 HD | 6.6L | V8 | — | N/A | — |
| 2011 | GMC | Sierra 3500 HD | 6.6L | V8 | — | N/A | — |
| 2010 | Chevrolet | Express 2500 | 6.6L | V8 | — | N/A | — |
| 2010 | Chevrolet | Express 3500 | 6.6L | V8 | — | N/A | — |
| 2010 | Chevrolet | Silverado 2500 HD | — | — | DIESEL | N/A | — |
| 2010 | Chevrolet | Silverado 3500 HD | — | — | DIESEL | N/A | — |
| 2010 | GMC | Savana 2500 | 6.6L | V8 | — | N/A | — |
| 2010 | GMC | Savana 3500 | 6.6L | V8 | — | N/A | — |
| 2010 | GMC | Sierra 2500 HD | — | — | DIESEL | N/A | — |
| 2010 | GMC | Sierra 3500 HD | — | — | DIESEL | N/A | — |
| 2009 | Chevrolet | Express 2500 | — | — | DIESEL | N/A | — |
| 2009 | Chevrolet | Express 3500 | — | — | DIESEL | N/A | — |
| 2009 | Chevrolet | Silverado 2500 HD | — | — | DIESEL | N/A | — |
| 2009 | Chevrolet | Silverado 3500 HD | — | — | DIESEL | N/A | — |
| 2009 | GMC | Savana 2500 | — | — | DIESEL | N/A | — |
| 2009 | GMC | Savana 3500 | — | — | DIESEL | N/A | — |
| 2009 | GMC | Sierra 2500 HD | — | — | DIESEL | N/A | — |
| 2009 | GMC | Sierra 3500 HD | — | — | DIESEL | N/A | — |
| 2008 | Chevrolet | Express 2500 | — | — | DIESEL | N/A | — |
| 2008 | Chevrolet | Express 3500 | — | — | DIESEL | N/A | — |
| 2008 | Chevrolet | Silverado 2500 HD | — | — | DIESEL | N/A | — |
| 2008 | Chevrolet | Silverado 3500 HD | — | — | DIESEL | N/A | — |
| 2008 | GMC | Savana 2500 | — | — | DIESEL | N/A | — |
| 2008 | GMC | Savana 3500 | — | — | DIESEL | N/A | — |
| 2008 | GMC | Sierra 2500 HD | — | — | DIESEL | N/A | — |
| 2008 | GMC | Sierra 3500 HD | — | — | DIESEL | N/A | — |
| 2007 | Chevrolet | Express 2500 | — | — | DIESEL | N/A | — |
| 2007 | Chevrolet | Express 3500 | — | — | DIESEL | N/A | — |
| 2007 | Chevrolet | Silverado 2500 HD | — | — | DIESEL | N/A | — |
| 2007 | Chevrolet | Silverado 3500 Classic | 6.6L | V8 | — | N/A | — |
| 2007 | Chevrolet | Silverado 3500 HD | — | — | DIESEL | N/A | — |
| 2007 | GMC | Savana 2500 | — | — | DIESEL | N/A | — |
| 2007 | GMC | Savana 3500 | — | — | DIESEL | N/A | — |
| 2007 | GMC | Sierra 2500 HD | — | — | DIESEL | N/A | — |
| 2007 | GMC | Sierra 3500 Classic | — | — | DIESEL | N/A | — |
| 2007 | GMC | Sierra 3500 HD | — | — | DIESEL | N/A | — |
| 2006 | Chevrolet | Express 2500 | — | — | DIESEL | N/A | — |
| 2006 | Chevrolet | Express 3500 | — | — | DIESEL | N/A | — |
| 2006 | Chevrolet | Silverado 2500 HD | — | — | DIESEL | N/A | — |
| 2006 | Chevrolet | Silverado 3500 | — | — | DIESEL | N/A | — |
| 2006 | GMC | Savana 2500 | — | — | DIESEL | N/A | — |
| 2006 | GMC | Savana 3500 | — | — | DIESEL | N/A | — |
| 2006 | GMC | Sierra 2500 HD | — | — | DIESEL | N/A | — |
| 2006 | GMC | Sierra 3500 | — | — | DIESEL | N/A | — |
| 2006 | Hummer | H1 | 6.6L | V8 | — | N/A | — |
| No rows match your filter. | |||||||