HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-339 Neutral Safety Switch
Part #: NS-339

Standard Ignition NS-339 Neutral Safety Switch

⚙️ 34 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi and Volkswagen, S8, Passat, A4, A4 Quattro, A6, A6 Quattro, A8, A8 Quattro, and S4
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Overview of Standard Ignition NS-339 Neutral Safety Switch

The Standard Ignition NS-339 Neutral Safety Switch is designed for reliable electrical performance in select Audi and Volkswagen vehicles. This switch ensures proper transmission safety by preventing engine start in gear, compatible with models such as Audi A4, A6, A8, and Volkswagen Passat.

  • Compatible with Audi A4, A4 Quattro, A6, A6 Quattro, A8, A8 Quattro, S4, S8, and Volkswagen Passat
  • Part number NS-339 for precise identification
  • 12-volt electrical system compatibility
  • Bolt mount attachment method for secure installation
  • 8 male terminals with pin-type connectors
  • One female round connector included
  • Constructed from durable plastic and metal materials
  • Wiring harness length of 18.125 inches (460.375 mm)
  • Compact size with 4.25 inches (107.95 mm) length

Detailed Product Description

The NS-339 neutral safety switch by Standard Ignition is engineered to meet the electrical and mechanical requirements of specific Audi and Volkswagen models. Featuring a bolt mount design, this switch provides a secure and stable connection to the vehicle’s transmission system. The switch includes eight male pin terminals and a single female round connector, facilitating proper electrical interfacing. Its black and silver finish combines plastic and metal components to ensure durability and resistance to wear. The wiring harness length of over 18 inches allows for flexible routing during installation. This part operates on a 12-volt system, matching the electrical specifications of the compatible vehicles.

Common Applications and Problem Resolution

  • Prevents engine from starting when transmission is in gear
  • Resolves issues with vehicle not starting or intermittent starting problems
  • Eliminates transmission safety switch faults that cause no-start conditions
  • Addresses electrical connection failures related to worn or damaged switches
  • Improves overall transmission safety system reliability

Installation Notes and Tips

  • Ensure vehicle is in neutral or park before installation
  • Use appropriate tools for bolt mount removal and installation
  • Verify connector orientation and terminal alignment before securing
  • Check wiring harness length and routing to avoid pinching or damage
  • Test switch operation after installation to confirm proper function

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The NS-339 neutral safety switch undergoes rigorous quality control to ensure reliable performance in Audi and Volkswagen vehicles. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in material and workmanship. Consult product documentation or authorized sources for exact warranty terms.

BrandStandard Ignition
Part NumberNS-339
Connector GenderFemale
Mounting TypeBolt Mount
Terminal GenderMale
Terminal TypePins

This part fits 34 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2003AudiS84.2LV8N/A8 Pin
2002AudiS84.2LV8N/A8 Pin
2001AudiS84.2LV8N/A8 Pin
2001VolkswagenPassatAutomaticN/A
2000AudiA4N/ATo 4/00
2000AudiA4 QuattroN/ATo 4/00
2000AudiA6N/ATo 4/00
2000AudiA6 QuattroN/ATo 4/00
2000AudiA8N/ATo 4/00
2000AudiA8 QuattroN/ATo 4/00
2000AudiS42.7LV6N/ATo Chassis No. 8D-Y-200 000
2000VolkswagenPassatAutomaticN/A
1999AudiA4N/A
1999AudiA4 QuattroN/A
1999AudiA6N/A
1999AudiA6 QuattroN/A
1999AudiA8N/A
1999AudiA8 QuattroN/A
1999VolkswagenPassatAutomaticN/A
1998AudiA4N/A
1998AudiA4 QuattroN/A
1998AudiA6N/A
1998AudiA6 QuattroN/A
1998AudiA8N/A
1998AudiA8 QuattroN/A
1998VolkswagenPassatAutomaticN/A
1997AudiA4N/A
1997AudiA4 QuattroN/A
1997AudiA6N/AFrom 11/97
1997AudiA6 QuattroN/AFrom 11/97
1997AudiA8N/A
1997AudiA8 QuattroN/A
1996AudiA4N/A
1996AudiA4 QuattroN/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:

01L91982101V91982118-09391S697653-3186788923656NS38050NS6832NS688RB430

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