Keep the starter from engaging until the shifter is in Park or Neutral with the Standard Ignition Neutral Safety Switch, part number NS-51, designed to let the engine crank only in those positions and help prevent the vehicle from starting in gear. It fits many vehicles, among them the 1990-1994 Dodge Grand Caravan, 1990-1995 Chrysler Town & Country and 1995-1996 Dodge Avenger, as a direct-fit replacement for the listed applications.
- OE ignition know-how: Standard Ignition is a global manufacturer of original equipment ignition products and maintains quality control throughout manufacturing, from componentry to the finished product.
- Copper alloy conductors: Used for strong electrical conductivity with low resistive losses.
- 100% tested: Every switch is checked to verify both its mechanical and its electrical switching performance.
- Built for technicians: Backed by decades of research and development focused on what technicians need, with a robust design and high-grade materials suited to demanding professional service.
Signs this switch may need replacing include an engine that won't crank in Park but does in Neutral (or the reverse), an intermittent no-crank condition, or a starter that engages in a gear other than Park or Neutral. Diagnose the cause first; if the neutral safety switch is at fault, NS-51 replaces it. See the "Vehicles it fits" section for the full list of vehicles and engine details.
Interchange: S9222 · 4671017 · 4707123 · 5234319 · CR407 · NS6489 · 88923259 · 88923270 · MO4671017 · MO4707123
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
S9222, 4671017, 4707123, 5234319, CR407, NS6489, 88923259, 88923270, MO4671017, MO4707123
Frequently Asked Questions
What does a neutral safety switch do?
It allows the starter circuit to operate only when the transmission is in Park or Neutral, helping prevent the engine from cranking while the vehicle is in gear.
Does this Avenger switch fit my 1995 or 1996 Dodge Avenger?
Yes. NS-51 is listed as a direct-fit replacement for the 1995-1996 Dodge Avenger; the "Vehicles it fits" section shows the full application details.
What are signs of a failing neutral safety switch?
Common signs include no crank in Park or Neutral, cranking in only one of those positions, or intermittent starting. Diagnose first, since other starting-circuit faults can cause similar symptoms.
How is the NS-51 tested?
Standard Ignition 100% tests its switches to verify both mechanical and electrical switching performance, and NS-51 uses copper alloy conductors for low resistive losses.
How do I install this switch?
Disconnect the battery and follow the vehicle service information for removal, installation and any required adjustment, then check that the engine cranks only in Park or Neutral.
