Part #: TJ21

Standard Ignition TJ21 Fuel Injector

24 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet and Pontiac, Chevy, LeMans, and Optima
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Overview of Standard Ignition Fuel Injector TJ21

The Standard Ignition TJ21 fuel injector is a remanufactured component designed specifically for TBI700 fuel injection systems. Engineered for gas-powered Chevrolet and Pontiac vehicles, including Chevy, LeMans, and Optima models, this black TBI-type injector ensures reliable fuel delivery and system compatibility.

  • Remanufactured fuel injector for TBI700 systems
  • Compatible with Chevrolet and Pontiac vehicles such as Chevy, LeMans, and Optima
  • Includes o-ring for secure installation
  • Black color with male blade terminals (2 terminals)
  • Designed for gas fuel type

Detailed Product Description

The Standard Ignition TJ21 fuel injector is tailored for throttle body injection (TBI) systems, specifically the TBI700 setup. This remanufactured injector comes with a black finish and includes an o-ring to ensure a proper seal during installation. It features two male blade terminals, providing a secure electrical connection compatible with the original equipment specifications. Designed for gasoline engines, this injector supports efficient fuel atomization and delivery, helping maintain engine performance and emissions standards in Chevrolet and Pontiac vehicles such as the Chevy, LeMans, and Optima.

Applications and Common Issues Addressed

  • Restores proper fuel delivery in TBI700 fuel injection systems
  • Resolves rough idling and engine hesitation caused by faulty injectors
  • Helps correct poor fuel economy related to injector malfunction
  • Addresses engine misfires linked to inconsistent fuel flow
  • Replaces leaking or damaged injectors to prevent fuel leaks

Installation Notes and Tips

  • Ensure compatibility with TBI700 system before installation
  • Use the included o-ring to prevent fuel leaks and maintain system pressure
  • Disconnect battery and relieve fuel system pressure prior to removal
  • Inspect electrical connectors for corrosion or damage before connecting
  • Follow vehicle manufacturer torque specifications when securing the injector

Quality Assurance and Warranty

Standard Ignition remanufactured fuel injectors undergo rigorous testing to meet OEM standards for performance and durability. The TJ21 part number is backed by a limited warranty covering defects in materials and workmanship, providing assurance of product reliability for Chevrolet and Pontiac fuel injection system repairs.

BrandStandard Ignition
Part NumberTJ21
ColorBlack
Fuel Injector TypeTBI
Fuel TypeGas
New or RemanRemanufactured
NotesIncludes O-Ring
System TypeFor TBI700
Terminal GenderMale
Terminal TypeBlade

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
2002ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
2001ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
2000ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
2000ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1999ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1999ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1998ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1998ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1997ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1997ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1996ChevroletChevy1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1996ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1995ChevroletChevy1.4LL4N/APerformance fuel injector fits various vehicle makes and models.
1993PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1992PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1991PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1991PontiacOptima1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1990PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1990PontiacOptima1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1989PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1989PontiacOptima1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1988PontiacLeMans1.6LL4N/APerformance fuel injector fits various vehicle makes and models.
1988PontiacOptima1.6LL4N/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:

142-44317111933171119832-1802231-151084G177357022800-1821N831-15108FIDL1821NFJ10040TB-10692

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