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Standard Ignition FJ638 Fuel Injector
Reliable Fuel Injector for Lexus GS and LS Models
The Standard Ignition FJ638 fuel injector is designed to provide precise fuel delivery for select Lexus vehicles. Engineered as a new MFI injector, it ensures consistent performance and compatibility with your Lexus GS400, GS430, LS400, LS430, SC400, or SC430.
- New MFI fuel injector with plug-in attachment method
- Black finish for durability and corrosion resistance
- Includes O-ring seals for secure installation and leak prevention
- OEM replacement part ensuring proper fit and function
- Male blade terminals with two connections for reliable electrical contact
Product Details and Specifications
The Standard Ignition FJ638 is a multi-port fuel injection (MFI) type injector designed specifically for gasoline engines. Its plug-in attachment method allows for straightforward installation, while the included O-rings and seals help maintain a tight seal to prevent fuel leaks. The injector features a black finish that resists wear and corrosion over time. With two male blade terminals, it provides secure electrical connectivity to the fuel injection system. This fuel injector is a direct OEM replacement, ensuring compatibility with the fuel delivery system of your Lexus GS400, GS430, LS400, LS430, SC400, and SC430 models.
Compatible Lexus Models and Applications
- Standard Ignition FJ638 fuel injector is compatible with Lexus GS400 and GS430
- Fits Lexus LS400 and LS430 models requiring MFI fuel injectors
- Suitable for Lexus SC400 and SC430 with multi-port fuel injection systems
Common Issues Addressed by This Fuel Injector
- Irregular engine idling or stalling due to faulty fuel delivery
- Reduced fuel efficiency caused by leaking or clogged injectors
- Engine misfires linked to inconsistent fuel spray patterns
- Hard starting or poor acceleration from injector malfunction
- Fuel leaks resulting from worn or damaged seals and O-rings
Installation Notes and Tips
When installing the Standard Ignition FJ638 fuel injector, ensure the O-rings are properly seated to prevent fuel leaks. The plug-in attachment method simplifies connection to the vehicle’s wiring harness. Verify that the male blade terminals align correctly with the corresponding female connectors. It is recommended to inspect the fuel rail and injector ports for cleanliness before installation to maintain optimal performance.
Quality Assurance and Warranty
This fuel injector is a new OEM replacement part manufactured to meet or exceed original equipment specifications. Standard Ignition provides quality assurance through rigorous testing to ensure reliable operation. The product includes seals and O-rings to support a secure fit and leak-free performance. Warranty details are available from the manufacturer and typically cover defects in materials and workmanship.
| Brand | Standard Ignition |
|---|---|
| Part Number | FJ638 |
| Attachment Method | Plug-in |
| Color/Finish | Black |
| Fuel Delivery Type | Gas |
| Fuel Injection Type | Mfi |
| Fuel Injector Type | Mfi injector |
| Gasket or Seal Included | Yes |
| Hardware Included | Seals |
| New or Reman | New |
| Notes | Includes o-ring |
| O-Rings Included | Yes |
| O.E.M. Replacement | Yes |
| Retainer Clips Included | No |
| System Type | Mfi |
| Terminal Gender | Male |
| Terminal Quantity | 2 |
| Terminal Type | Blade |
This part fits 30 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2009 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2008 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2007 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2007 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2006 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2006 | Lexus | LS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2006 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2005 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2005 | Lexus | LS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2005 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2004 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2004 | Lexus | LS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2004 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2003 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2003 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2002 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2002 | Lexus | LS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2002 | Lexus | SC430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2001 | Lexus | GS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2001 | Lexus | LS430 | 4.3L | V8 | N/A | New; Cyl. 5 to 8 |
| 2000 | Lexus | GS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 2000 | Lexus | LS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 2000 | Lexus | SC400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1999 | Lexus | GS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1999 | Lexus | LS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1999 | Lexus | SC400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1998 | Lexus | GS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1998 | Lexus | LS400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
| 1998 | Lexus | SC400 | 4.0L | V8 | N/A | New; Cyl. 5 to 8 |
* 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.