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Standard Ignition FJ951 Fuel Injector
Fuel Injector for Ford F-150 and Super Duty
Standard Ignition FJ951 is a new MFI fuel injector built for gas applications that require precise top-feed fuel delivery. It is an OE replacement injector for select Ford F-150, F-150 Heritage, F-250 Super Duty, F-350, and F-350 Super Duty models, with flow-matched performance for smoother engine operation.
Key Features
- New MFI injector for gas engines
- Top-feed system design with male blade terminals
- Black injector body with 2-terminal electrical connection
- High-temp Viton O-rings included for sealing under heat
- Stainless steel calibration slide and spring assembly for corrosion resistance
- Precision-wound solenoid windings for controlled fuel delivery
- Fiber optic YAG laser welding and 100 million cycle testing
- OE replacement design for select Ford truck applications
Detailed Description
Standard Ignition FJ951 is engineered to restore accurate fuel metering in select Ford truck applications, including 2003-2004 Ford F-150, 2004 Ford F-150 Heritage, 2003-2004 Ford F-250 Super Duty, 2003-2004 Ford F-350, and 2003-2004 Ford F-350 Super Duty. This fuel injector uses a top-feed MFI design and precision solenoid control to help maintain balanced fuel delivery, which supports smooth idle quality and consistent engine response. The stainless steel internal components and Viton sealing materials are selected to resist corrosion and heat-related wear in demanding underhood conditions. This part cross-references Four Seasons 67551 for the same application.
What It Helps Address
- Rough idle caused by inconsistent fuel atomization
- Hard starting related to restricted or worn injector performance
- Fuel delivery imbalance between cylinders
- Excess fuel consumption from poor injector control
- Emissions concerns tied to uneven fuel metering
Installation Notes and Tips
Verify connector style, terminal count, and fuel system layout before installation. This injector uses a male blade terminal with a 2-terminal electrical connection and includes O-rings. Confirm the vehicle’s build date and engine calibration when servicing 2003-2004 Ford F-150, F-250 Super Duty, F-350, or F-350 Super Duty models, since fitment notes vary by application. Standard Ignition FJ951 is an OE replacement injector, so matching the original injector specification is important for proper operation.
Quality Assurance
Standard Ignition states that this injector is manufactured with controlled component-to-finished-product oversight, corrosion-resistant internal materials, laser-welded construction, and cycle testing to verify durability and consistency. The brand also notes that its OE replacement parts are developed to address common failure points found in original equipment designs.
| Brand | Standard Ignition |
|---|---|
| Part Number | FJ951 |
| Color | Black |
| Fuel Injection Type | MFI |
| Fuel Injector Type | MFI Injector |
| Fuel Type | Gas |
| Hardware Included | No |
| New or Reman | New |
| O-Rings Included | Yes |
| O.E.M. Replacement | Yes |
| System Type | Top Feed |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2004 | Ford | F-150 Heritage | 5.4L | V8 | N/A | Performance fuel injector fits various vehicle makes and models. | |
| 2004 | Ford | F-250 Super Duty | 5.4L | V8 | N/A | Performance fuel injector fits various vehicle makes and models. | |
| 2004 | Ford | F-350 | 5.4L | V8 | N/A | From 1/15/03 | |
| 2004 | Ford | F-350 Super Duty | 5.4L | V8 | N/A | Performance fuel injector fits various vehicle makes and models. | |
| 2003 | Ford | F-150 | 5.4L | V8 | GAS | N/A | From 1/15/03; New |
| 2003 | Ford | F-150 | 5.4L | V8 | BI-FUEL | N/A | From 1/15/03; New |
| 2003 | Ford | F-250 Super Duty | 5.4L | V8 | N/A | From 1/15/03; New | |
| 2003 | Ford | F-350 | 5.4L | V8 | N/A | From 1/15/03 | |
| 2003 | Ford | F-350 Super Duty | 5.4L | V8 | N/A | From 1/15/03; New |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.