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Standard Ignition PR121 Fuel Injection Pressure Regulator
| Brand | Standard Ignition PR121 |
|---|---|
| Contents | Includes Caution Sheet |
| Fuel Type | Gas |
| Functions | Regulator |
| Nipple Orientation | Straight |
| Operating Pressure - PSI | 50 psi |
| Fits | Mitsubishi and Dodge · 20 vehicles |
Fuel pressure regulation. Maintains consistent pressure in gas fuel injection systems.
Straight nipple design. Simplifies hose routing for a cleaner installation.
Cross-references Dorman - OE Solutions 800-233, Gates 23009 and Standard Ignition PR121 for the same application. See all 7.
Fuel Pressure Control for Mitsubishi and Dodge
Standard Ignition PR121 is a gas fuel injection pressure regulator built to maintain consistent fuel pressure in the injection system. It is a direct-fit service part for select Mitsubishi and Dodge applications, including 1991-1999 Mitsubishi 3000GT, 1991-1996 Dodge Stealth, and 1992-1996 Mitsubishi Diamante.
Key Features
- Fuel injection pressure regulator for gas systems
- Operating pressure: 50 psi
- Straight nipple orientation for the fuel system layout
- Includes caution sheet
- Standard Ignition PR121 replacement part
Detailed Description
The Standard Ignition PR121 regulates fuel pressure within the injection system to help maintain the pressure level required for proper engine operation. Built for gas applications, it is specified at 50 psi and uses a straight nipple orientation. This part is commonly searched as a fuel injection pressure regulator for Mitsubishi 3000GT, Dodge Stealth, and Mitsubishi Diamante models, making PR121 a focused replacement choice for vehicles that need stable fuel delivery control.
This part cross-references Dorman - OE Solutions 800-233 and Gates 23009 for the same application.
What It Helps Address
- Fuel pressure that is too high or too low
- Rough idle caused by inconsistent fuel delivery
- Hard starting related to pressure regulation issues
- Rich or lean running conditions from a failing regulator
- Driveability problems tied to unstable injector pressure
Installation Notes and Tips
Verify the fuel system configuration before installation and confirm the regulator matches the vehicle’s pressure specification. For best results, inspect related fuel lines, seals, and connectors during service. Fits 1991-1999 Mitsubishi 3000GT, N/A. Fits 1991-1996 Dodge Stealth, N/A. Fits 1992-1996 Mitsubishi Diamante, N/A.
Quality Assurance
Standard Ignition supplies replacement fuel system components for service applications, and PR121 is identified with the included caution sheet for installation awareness. Confirm part number PR121 and vehicle fitment before ordering.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1999 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1998 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1997 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1996 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1996 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1996 | Mitsubishi | Diamante | 3.0L | V6 | N/A | — |
| 1995 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1995 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1995 | Mitsubishi | Diamante | 3.0L | V6 | N/A | — |
| 1994 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1994 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1994 | Mitsubishi | Diamante | 3.0L | V6 | N/A | — |
| 1993 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1993 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1993 | Mitsubishi | Diamante | 3.0L | V6 | N/A | — |
| 1992 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1992 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
| 1992 | Mitsubishi | Diamante | 3.0L | V6 | N/A | — |
| 1991 | Dodge | Stealth | 3.0L | V6 | N/A | — |
| 1991 | Mitsubishi | 3000GT | 3.0L | V6 | N/A | — |
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