Part #: FJ398

Standard Ignition FJ398 Fuel Injector

⚙️ 11 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$222.44Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Subaru, Forester, Impreza, and Legacy
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Standard Ignition Fuel Injector FJ398

The Standard Ignition FJ398 fuel injector is designed specifically for select Subaru models, including the Forester, Impreza, and Legacy. This new, red-finished MFI injector features a side feed system and male blade terminals, ensuring reliable fuel delivery and compatibility with your vehicle's fuel injection system.

  • New Standard Ignition fuel injector with red finish
  • MFI injector type for precise fuel metering
  • Side feed system design for efficient fuel flow
  • Male blade terminals with two connections for secure wiring
  • Compatible with Subaru Forester, Impreza, and Legacy models

Detailed Product Description

The FJ398 fuel injector from Standard Ignition is engineered to meet the specifications of Subaru vehicles requiring a multi-port fuel injection (MFI) system. Its side feed design allows for optimal fuel atomization and distribution within the intake manifold. The injector’s red color finish helps with easy identification during maintenance or replacement. Equipped with two male blade terminals, this injector ensures a secure electrical connection, supporting consistent engine performance. This new fuel injector is a direct replacement part, designed to maintain factory fuel delivery standards and support engine efficiency.

Compatible Vehicles and Applications

This fuel injector is compatible with the following Subaru models:

  • Subaru Forester
  • Subaru Impreza
  • Subaru Legacy

It is intended for use in fuel injection systems requiring side feed MFI injectors with male blade terminals, making it suitable for specific engine configurations in these models.

Common Issues Addressed by FJ398 Fuel Injector

  • Engine misfires caused by faulty or clogged injectors
  • Reduced fuel efficiency due to inconsistent fuel delivery
  • Rough idling or hesitation during acceleration
  • Check engine light triggered by injector-related faults
  • Fuel leaks or electrical connection problems at the injector terminals

Installation Notes and Tips

When installing the Standard Ignition FJ398 fuel injector, ensure the electrical connectors match the male blade terminal configuration. Verify the injector’s side feed orientation aligns with the vehicle’s fuel rail setup. It is recommended to inspect and clean the fuel rail and intake manifold before installation to prevent contamination. Proper torque specifications should be followed to avoid damage to the injector or fuel system components.

Quality Assurance and Warranty

Standard Ignition manufactures the FJ398 fuel injector to meet OEM standards for fit, form, and function. This new injector undergoes rigorous testing to ensure reliable performance and durability. While specific warranty details are not provided here, Standard Ignition products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms.

BrandStandard Ignition
Part NumberFJ398
Color/FinishRed
Fuel Injector TypeMfi injector
New or RemanNew
System TypeSide feed
Terminal GenderMale
Terminal Quantity2
Terminal TypeBlade

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1998SubaruForester2.5LH4N/APerformance fuel injector fits various vehicle makes and models.
1998SubaruImpreza2.5LH4N/APerformance fuel injector fits various vehicle makes and models.
1998SubaruLegacy2.5LH4N/APerformance fuel injector fits various vehicle makes and models.
1997SubaruLegacy2.5LH4N/APerformance fuel injector fits various vehicle makes and models.
1996SubaruImpreza2.2LH4N/APerformance fuel injector fits various vehicle makes and models.
1996SubaruLegacy2.5LH4N/APerformance fuel injector fits various vehicle makes and models.
1995SubaruImpreza2.2LH4N/APerformance fuel injector fits various vehicle makes and models.
1995SubaruLegacy2.2LH4N/APerformance fuel injector fits various vehicle makes and models.
1994SubaruLegacy2.2LH4N/APerformance fuel injector fits various vehicle makes and models.
1993SubaruLegacy2.2LH4N/APerformance fuel injector fits various vehicle makes and models.
1992SubaruLegacy2.2LH4N/APerformance fuel injector fits various vehicle makes and models.

* 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:

16611AA1402-1835867106800-1405NFJ398

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.