HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-333 Neutral Safety Switch
Part #: NS-333

Standard Ignition NS-333 Neutral Safety Switch

⚙️ 7 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, 850Ci, 740i, and 740iL
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Overview of Standard Ignition NS-333 Neutral Safety Switch

The Standard Ignition NS-333 Neutral Safety Switch is designed for precise electrical control in select BMW models. Engineered to meet OEM specifications, this switch ensures reliable operation for your BMW 740i, 740iL, and 850Ci vehicles.

  • Compatible with BMW 740i, 740iL, and 850Ci models
  • Part number NS-333 for accurate identification
  • 7 male terminals with pin-type connectors
  • Rectangular female connector with one connector quantity
  • Bolt mount attachment method for secure installation
  • Constructed from durable plastic and metal materials
  • Wiring harness length of 18.5 inches (469.9 mm)
  • Operates on 12-volt electrical systems
  • Color finish in black and gold for corrosion resistance

Detailed Product Description

The Standard Ignition NS-333 neutral safety switch is a critical component in the electrical system of BMW 740i, 740iL, and 850Ci models. It features a bolt mount attachment method that ensures a secure and stable fit within the vehicle’s transmission system. The switch includes seven male terminals with pin-type connectors, designed to interface with a single rectangular female connector. This configuration supports reliable electrical connections and signal transmission.

Measuring 3.25 inches (82.55 mm) in length, the switch is constructed from a combination of plastic and metal materials, providing durability and resistance to wear. The wiring harness extends 18.5 inches (469.9 mm), allowing for flexible routing during installation. The black and gold color finish offers additional protection against corrosion and environmental factors.

Applications and Problem Resolution

  • Prevents engine start in gear to enhance safety
  • Eliminates issues with starting system engagement
  • Resolves intermittent starting problems related to faulty neutral safety switches
  • Ensures proper transmission range sensor function
  • Addresses electrical connection failures in the starting circuit

Installation Notes and Tips

  • Ensure vehicle is in neutral or park before installation
  • Use appropriate tools for bolt mount attachment to avoid damage
  • Verify connector orientation matches the rectangular female connector
  • Check wiring harness length for proper routing without tension
  • Confirm all seven terminals are securely connected to prevent electrical faults

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The NS-333 neutral safety switch undergoes rigorous quality control testing to maintain consistent functionality. While mounting hardware and gaskets are not included, the product is designed for straightforward installation with existing vehicle components. Warranty coverage details should be confirmed with the parts provider or manufacturer.

BrandStandard Ignition
Part NumberNS-333
Connector GenderFemale
Terminal GenderMale
Terminal TypePins

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1997BMW850Ci5.4LV12N/A
1996BMW850Ci5.4LV12N/A
1995BMW740i4.0LV8N/A
1995BMW850Ci5.4LV12N/A
1994BMW740i4.0LV8N/A
1993BMW740i4.0LV8N/A
1993BMW740iL4.0LV8N/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:

18-09291S71612410142179453-31898NS38044NS6826SW4720

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