HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-347 Neutral Safety Switch
Part #: NS-347

Standard Ignition NS-347 Neutral Safety Switch

⚙️ 14 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: BMW, 320i, 325i, 840Ci, 850Ci, and 318is
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Reliable Neutral Safety Switch for BMW Models

The Standard Ignition NS-347 Neutral Safety Switch is designed to ensure safe and accurate transmission operation for select BMW vehicles. Engineered with precision, this switch helps prevent engine start-up in gear, enhancing vehicle safety and functionality.

  • Compatible with BMW 318is, 320i, 325i, 840Ci, and 850Ci models
  • 12-volt electrical rating suitable for standard automotive systems
  • Yellow face color for easy identification during installation
  • Seven male pin terminals with one female rectangular connector
  • Bolt mount attachment method for secure and stable installation
  • Constructed from durable plastic material
  • Length of approximately 2.16 inches (54.77 mm)

Product Details and Specifications

The NS-347 neutral safety switch from Standard Ignition features a bolt mount design that ensures a firm and reliable fit within the vehicle’s transmission system. Its seven male pin terminals connect to a single female rectangular connector, facilitating straightforward wiring and integration. The switch’s yellow face color aids in quick visual identification, which can be helpful during diagnostics or replacement. Made from durable plastic, this component is built to withstand typical automotive operating conditions. With a length of just over two inches, it fits precisely in the designated mounting location without interfering with surrounding components.

Compatible BMW Models and Applications

This neutral safety switch is specifically compatible with BMW 318is, 320i, 325i, 840Ci, and 850Ci models. It is designed to replace the original equipment part, ensuring proper function of the vehicle’s starting system by preventing the engine from starting unless the transmission is in neutral or park.

  • Prevents engine start in gear, avoiding unintended vehicle movement
  • Resolves issues with engine not starting or intermittent starting problems
  • Eliminates transmission-related electrical faults affecting ignition
  • Addresses dashboard warning lights related to transmission safety circuits
  • Restores proper communication between transmission and ignition systems

Installation Notes and Tips

Installation of the Standard Ignition NS-347 neutral safety switch requires basic automotive electrical knowledge and tools. The bolt mount attachment method provides a secure fit, but ensure the mounting surface is clean and free of debris before installation. Verify the orientation of the yellow face and connector alignment to match the original switch. Since mounting hardware is not included, retain or source appropriate bolts for installation. Always disconnect the vehicle battery before beginning work to prevent electrical shorts or injury.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The NS-347 neutral safety switch undergoes rigorous quality control to ensure consistent operation. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or the supplier for exact warranty terms.

BrandStandard Ignition
Part NumberNS-347
Connector GenderFemale
Terminal GenderMale
Terminal TypePin

This part fits 14 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995BMW320i2.0LL6N/A
1995BMW325iN/A
1995BMW840CiN/A
1994BMW320i2.0LL6N/A
1994BMW325iN/AGearshift Position
1994BMW840CiN/A
1994BMW850CiN/A
1993BMW318isN/ASwitch
1993BMW325iN/AGearshift Position
1993BMW850CiN/A
1992BMW320i2.0LL6N/A
1992BMW325iN/AGearshift Position
1991BMW325iN/A
1990BMW325iN/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:

18-095425161422821NS38059NS6841V20-73-0168

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