OE Quality
60-Day Returns

Standard Ignition NS-243 Neutral Safety Switch
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.
| Brand | Standard Ignition |
| Part Number | NS-243 |
| Color | Gray, Silver |
| Connector Gender | Female |
| Finish | Aluminum, Plastic |
| Terminal Gender | Male |
| Terminal Type | Blade Plug |
This part fits 21 vehicles. Search below:
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2001 | Chevrolet | Metro | Automatic | N/A | |||
| 2000 | Chevrolet | Metro | Automatic | N/A | |||
| 1999 | Chevrolet | Metro | Automatic | N/A | |||
| 1999 | Suzuki | Swift | Automatic | N/A | |||
| 1998 | Chevrolet | Metro | Automatic | N/A | |||
| 1998 | Pontiac | Firefly | Automatic | 1.0L | L3 | N/A | |
| 1998 | Pontiac | Firefly | Automatic | 1.3L | L4 | N/A | |
| 1998 | Suzuki | Swift | Automatic | N/A | |||
| 1997 | Geo | Metro | Automatic | N/A | |||
| 1997 | Pontiac | Firefly | N/A | ||||
| 1997 | Suzuki | Swift | Automatic | N/A | |||
| 1996 | Geo | Metro | Automatic | N/A | |||
| 1996 | Pontiac | Firefly | N/A | ||||
| 1996 | Suzuki | Swift | Automatic | N/A | |||
| 1995 | Geo | Metro | Automatic | N/A | |||
| 1995 | Pontiac | Firefly | N/A | ||||
| 1995 | Suzuki | Swift | Automatic | N/A | |||
| 1994 | Geo | Metro | Automatic | N/A | |||
| 1994 | Pontiac | Firefly | N/A | ||||
| 1993 | Geo | Metro | Automatic | N/A | |||
| 1992 | Geo | Metro | Automatic | N/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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.