HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-243 Neutral Safety Switch
Part #: NS-243

Standard Ignition NS-243 Neutral Safety Switch

⚙️ 21 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Suzuki, Pontiac, and Geo, Metro, Swift, and Firefly
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Reliable Neutral Safety Switch for Chevrolet, Geo, Pontiac, and Suzuki

The Standard Ignition NS-243 Neutral Safety Switch is designed to ensure safe engine starting by preventing the vehicle from starting in gear. This switch is compatible with Chevrolet Firefly, Geo Metro, and Pontiac Suzuki Swift models, providing a precise fit and reliable performance.

  • Color: Gray and silver for easy identification
  • Connector Gender: Female with one connector for secure connection
  • Finish: Durable aluminum and plastic construction
  • Terminal Gender: Male with nine blade plug terminals
  • Terminal Type: Blade plug terminals for reliable electrical contact

Detailed Product Description

The NS-243 Neutral Safety Switch from Standard Ignition features a robust aluminum and plastic finish that withstands typical automotive conditions. Its gray and silver color coding helps with quick installation and verification. Equipped with a single female connector and nine male blade plug terminals, this switch ensures a secure and stable electrical connection. The blade plug terminal design supports consistent conductivity and reduces the risk of connection failure. This part is engineered specifically for Chevrolet Firefly, Geo Metro, and Pontiac Suzuki Swift vehicles, ensuring compatibility and proper function within the vehicle’s electrical system.

Common Applications and Issues Addressed

  • Prevents engine from starting when the transmission is in gear
  • Eliminates no-start conditions related to faulty neutral safety switches
  • Resolves intermittent starting problems caused by poor electrical connections
  • Helps maintain proper safety interlock function in automatic transmissions
  • Addresses issues with starter circuit continuity in compatible vehicles

Installation Notes and Tips

  • Verify vehicle compatibility with Chevrolet Firefly, Geo Metro, or Pontiac Suzuki Swift before installation
  • Disconnect the battery prior to installation to avoid electrical shorts
  • Ensure the female connector and blade plug terminals are clean and free of corrosion
  • Align the switch properly with the transmission linkage for accurate operation
  • Test the switch function before finalizing installation to confirm proper starting interlock

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications. The NS-243 Neutral Safety Switch undergoes rigorous quality control to ensure durability and reliable performance. This part is backed by Standard Ignition’s limited warranty, providing coverage against defects in material and workmanship under normal use.

BrandStandard Ignition
Part NumberNS-243
ColorGray, Silver
Connector GenderFemale
FinishAluminum, Plastic
Terminal GenderMale
Terminal TypeBlade Plug

This part fits 21 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2001ChevroletMetroAutomaticN/A
2000ChevroletMetroAutomaticN/A
1999ChevroletMetroAutomaticN/A
1999SuzukiSwiftAutomaticN/A
1998ChevroletMetroAutomaticN/A
1998PontiacFireflyAutomatic1.0LL3N/A
1998PontiacFireflyAutomatic1.3LL4N/A
1998SuzukiSwiftAutomaticN/A
1997GeoMetroAutomaticN/A
1997PontiacFireflyN/A
1997SuzukiSwiftAutomaticN/A
1996GeoMetroAutomaticN/A
1996PontiacFireflyN/A
1996SuzukiSwiftAutomaticN/A
1995GeoMetroAutomaticN/A
1995PontiacFireflyN/A
1995SuzukiSwiftAutomaticN/A
1994GeoMetroAutomaticN/A
1994PontiacFireflyN/A
1993GeoMetroAutomaticN/A
1992GeoMetroAutomaticN/A

* 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:

1S508053-3153791172842DR4047NS106NS6505S9174

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