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Standard Ignition PR449 Fuel Injection Pressure Regulator
| Brand | Standard Ignition PR449 |
|---|---|
| Adjustable | Yes |
| Contents | Includes Caution Sheet |
| Fuel Type | Gas |
| Functions | Regulator |
| New or Reman | New |
| Nipple Orientation | Angled |
| Notes | Includes O-Ring |
| Number of outlets | 1 |
| Reference Port Included | No |
| Type | Return |
| Fits | Acura · 6 vehicles |
Adjustable regulator. Lets you fine-tune fuel pressure for the system.
Return-style design. Manages excess fuel flow for stable operation.
Includes O-ring. Provides a ready-to-install sealing component.
Cross-references Four Seasons 24157, Standard Ignition PR449 and 2-199017 for the same application. See all 5.
Fuel Pressure Control for Acura RDX
Standard Ignition PR449 is a new fuel injection pressure regulator for gas systems with a return-style layout. It features an adjustable design, one inlet, one outlet, an angled nipple orientation, and includes an O-ring and caution sheet for service work.
Built for 2007-2012 Acura RDX applications, this fuel injection pressure regulator helps maintain consistent fuel pressure at the rail for proper injector operation. The PR449 is a direct-fit service part for technicians and DIY repairs focused on drivability and fuel delivery accuracy.
Key Features
- Adjustable fuel injection pressure regulator for gas systems
- Return-type design with one inlet and one outlet
- Angled nipple orientation for routing flexibility
- Includes O-ring and caution sheet
- New replacement part from Standard Ignition
- Fits 2007-2012 Acura RDX
Detailed Description
Standard Ignition PR449 is engineered for fuel injection systems that use a return-style regulator. It is intended to regulate fuel pressure within the system so the engine receives the correct fuel delivery under changing operating conditions. For Acura RDX owners and repair shops, PR449 provides a service replacement option for vehicles in the 2007-2012 model years.
This part cross-references Four Seasons 24157 for the same application. The PR449 part number is also used in interchange listings for related fuel system service references.
Common Issues It Can Address
- Fuel pressure that is too high or too low
- Hard starting related to unstable fuel delivery
- Rough idle caused by inconsistent rail pressure
- Fuel smell or drivability concerns tied to regulator wear
- Loss of throttle response from improper fuel pressure control
Installation Notes and Tips
Verify the vehicle uses a gas, return-type fuel system before installation. Inspect the sealing surface and replace the O-ring during service as supplied. Follow the included caution sheet and confirm all fuel connections are secure after installation. Fits 2007-2012 Acura RDX, N/A.
Quality Assurance
Standard Ignition supplies this PR449 regulator as a new replacement component for fuel system service. Confirm fitment by year, make, model, and fuel system type before ordering.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2012 | Acura | RDX | N/A | — |
| 2011 | Acura | RDX | N/A | — |
| 2010 | Acura | RDX | N/A | — |
| 2009 | Acura | RDX | N/A | — |
| 2008 | Acura | RDX | N/A | — |
| 2007 | Acura | RDX | N/A | — |
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