Home› Electrical, Lighting and Body > Switches› Standard Ignition NS-666 Neutral Safety Switch
Standard Ignition NS-666 Neutral Safety SwitchOE Quality 60-Day Returns
Standard Ignition NS-666 Neutral Safety Switch - view 1
Standard Ignition NS-666 Neutral Safety Switch - view 2
Standard Ignition NS-666 Neutral Safety Switch - view 3
Standard Ignition NS-666 Neutral Safety Switch - view 4
Part #: NS-666

Standard Ignition NS-666 Neutral Safety Switch

⚙️ 159 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$53.80Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Hyundai, Kia, Jeep, and Dodge, Tucson, Optima, Sorento, Sportage, Santa Fe, Santa Fe Sport, Azera, Compass, Patriot, Cadenza, Forte, Forte Koup, Dart, Santa Fe XL, Veloster, Forte5, Sedona, Elantra GT, and Soul
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Neutral Safety Switch options

Reliable Neutral Safety Switch for Dodge, Hyundai, Jeep, and Kia Vehicles

The Standard Ignition NS-666 Neutral Safety Switch is engineered to provide dependable electrical performance for select Dodge, Hyundai, Jeep, and Kia models. Designed with durable materials and precise mounting features, this switch ensures proper vehicle starting safety and transmission control.

  • Compatible with Dodge Dart, Jeep Compass, Hyundai Elantra, Kia Forte, and other models
  • 12V electrical system support with 8 male blade terminals
  • Bolt mount attachment method for secure installation
  • Constructed from cast iron and plastic with black and gray finish
  • Rectangular female connector with one connector quantity
  • Compact length of 2.875 inches (73.025 mm)

Durable Construction and Precise Fitment

The NS-666 neutral safety switch features a robust combination of plastic and metal materials, including a cast iron and plastic finish that withstands typical automotive operating conditions. Its bolt mount design allows for a secure and stable installation, minimizing the risk of movement or disconnection. The switch includes eight male blade terminals and a single rectangular female connector, ensuring compatibility with the vehicle’s wiring harness. Measuring just under 3 inches in length, it fits neatly within the designated mounting area without interfering with other components.

Compatible Vehicle Applications

This neutral safety switch is compatible with a range of Dodge, Hyundai, Jeep, and Kia vehicles, including but not limited to:

  • Dodge Dart and Jeep Compass
  • Hyundai Accent, Elantra, Elantra GT, Kona, Santa Fe, Santa Fe Sport, Santa Fe XL, Sonata, Tucson, Veloster
  • Kia Forte, Forte5, Forte Koup, Optima, Rio, Sedona, Soul, Sorento, Sportage

Ensure proper fitment by verifying your vehicle model and year before installation.

Common Issues Addressed by the Neutral Safety Switch

  • Prevents engine from starting in gear, enhancing safety
  • Eliminates no-start conditions related to faulty neutral safety switch
  • Resolves intermittent starting problems caused by electrical connection issues
  • Helps maintain proper transmission range sensor function
  • Prevents accidental vehicle movement during ignition

Installation Notes and Tips

  • Mount using the bolt mount method as specified; mounting hardware is not included
  • Ensure all eight male blade terminals align correctly with the vehicle’s wiring harness female connector
  • Verify the rectangular connector shape matches the vehicle’s connector for proper fit
  • Disconnect the battery before installation to avoid electrical shorts
  • Test the switch operation after installation to confirm correct function

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The NS-666 neutral safety switch undergoes rigorous quality control testing to maintain consistent standards. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandStandard Ignition
Part NumberNS-666
ColorBlack, Gray
Connector GenderFemale
FinishCast Iron, Plastic
Mounting TypeBolt Mount
Terminal GenderMale

This part fits 159 vehicles. Search below:

YearMakeModelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2022HyundaiAccentAutomatic1.6LL4N/A
2021HyundaiAccentAutomatic1.6LL4N/A
2021HyundaiKona1.6LL4N/A
2021HyundaiTucsonAWDAutomatic2.0LL4N/A
2021HyundaiVelosterAutomatic2.0LL4N/A
2020HyundaiAccentAutomatic1.6LL4N/A
2020HyundaiElantra GTAutomatic2.0LL4N/A
2020HyundaiKona1.6LL4N/A
2020HyundaiTucsonAWDAutomatic2.0LL4N/A
2020HyundaiVelosterAutomatic2.0LL4N/A
2019HyundaiAccentAutomatic1.6LL4N/A
2019HyundaiElantraAutomatic2.0LL4N/A
2019HyundaiElantra GTAutomatic2.0LL4N/A
2019HyundaiKona1.6LL4N/A
2019HyundaiTucsonN/A
2019HyundaiVelosterAutomatic2.0LL4N/A
2019KiaOptimaGASN/A
2019KiaRioN/A
2019KiaSorentoN/A
2019KiaSoul2.0LL4N/A
2019KiaSportageN/A
2018HyundaiAccentAutomatic1.6LL4N/A
2018HyundaiElantraAutomatic2.0LL4N/A
2018HyundaiElantra GTAutomatic2.0LL4N/A
2018HyundaiKona1.6LL4N/A
2018HyundaiSanta FeN/A
2018HyundaiSanta Fe SportN/A
2018HyundaiTucsonN/A
2018KiaForte2.0LL4N/A
2018KiaOptimaGASN/A
2018KiaRioN/A
2018KiaSorentoN/A
2018KiaSoul2.0LL4N/A
2018KiaSportageN/A
2017HyundaiAccentAutomatic1.6LL4N/A
2017HyundaiAzeraN/A
2017HyundaiElantraAutomatic2.0LL4N/A
2017HyundaiElantra GTAutomaticN/A
2017HyundaiSanta FeN/A
2017HyundaiSanta Fe SportN/A
2017HyundaiTucsonN/A
2017JeepCompass2.0LL4N/A
2017JeepCompassAutomatic2.4LL4N/A
2017JeepPatriot2.0LL4N/A
2017JeepPatriotAutomatic2.4LL4N/A
2017KiaForte2.0LL4N/A
2017KiaOptimaGASN/A
2017KiaRioN/A
2017KiaSorentoN/A
2017KiaSoul2.0LL4N/A
2017KiaSportageN/A
2016DodgeDart2.0LL4N/A
2016HyundaiAccentAutomaticN/A
2016HyundaiAzeraN/A
2016HyundaiElantraAutomatic1.8LL4N/A
2016HyundaiElantra GTAutomaticN/A
2016HyundaiSanta FeN/A
2016HyundaiSanta Fe SportN/A
2016HyundaiTucsonN/A
2016JeepCompass2.0LL4N/A
2016JeepCompassAutomatic2.4LL4N/A
2016JeepPatriot2.0LL4N/A
2016JeepPatriotAutomatic2.4LL4N/A
2016KiaCadenzaN/A
2016KiaForte2.0LL4N/A
2016KiaForte Koup2.0LL4N/A
2016KiaOptimaGASN/A
2016KiaRioN/A
2016KiaSorentoN/A
2016KiaSoulN/A
2016KiaSportageN/A
2015DodgeDart2.0LL4N/A
2015DodgeDart2.4LL4N/A
2015HyundaiAccentAutomaticN/A
2015HyundaiAzeraN/A
2015HyundaiElantraAutomatic1.8LL4N/A
2015HyundaiElantra GTAutomaticN/A
2015HyundaiSanta FeN/A
2015HyundaiSanta Fe SportN/A
2015HyundaiSanta Fe XL3.3LV6N/A
2015HyundaiSonata2.0LL4N/A
2015HyundaiTucsonN/A
2015HyundaiVelosterN/A
2015JeepCompass2.0LL4N/A
2015JeepCompassAutomatic2.4LL4N/A
2015JeepPatriot2.0LL4N/A
2015JeepPatriotAutomatic2.4LL4N/A
2015KiaCadenzaN/A
2015KiaForte2.0LL4N/A
2015KiaForte Koup2.0LL4N/A
2015KiaForte52.0LL4N/A
2015KiaOptimaGASN/A
2015KiaRioN/A
2015KiaSedona3.3LV6N/A
2015KiaSorentoN/A
2015KiaSoulN/A
2015KiaSportageN/A
2014DodgeDart2.0LL4N/A
2014DodgeDart2.4LL4N/A
2014HyundaiAccentAutomaticN/A
2014HyundaiAzeraN/A
2014HyundaiElantraAutomatic1.8LL4N/A
2014HyundaiElantra GTN/A
2014HyundaiSanta FeN/A
2014HyundaiSanta Fe SportN/A
2014HyundaiSanta Fe XL3.3LV6N/A
2014HyundaiSonataN/A
2014HyundaiTucsonN/A
2014HyundaiVelosterN/A
2014JeepCompass2.0LL4N/A
2014JeepCompassAutomatic2.4LL4N/A
2014JeepPatriot2.0LL4N/A
2014JeepPatriotAutomatic2.4LL4N/A
2014KiaCadenzaN/ATo 10/23/13
2014KiaForteN/A
2014KiaForte KoupN/A
2014KiaForte52.0LL4N/A
2014KiaOptimaN/A
2014KiaRioN/A
2014KiaSorentoN/A
2014KiaSoulN/A
2014KiaSportageN/A
2013DodgeDart2.0LL4N/A
2013DodgeDart2.4LL4N/A
2013HyundaiAccentAutomaticN/A
2013HyundaiAzeraN/A
2013HyundaiElantraAutomatic1.8LL4N/A
2013HyundaiElantra GTAutomaticN/A
2013HyundaiSanta FeN/A
2013HyundaiSanta Fe SportN/A
2013HyundaiSanta Fe XL3.3LV6N/A
2013HyundaiSonataN/A
2013HyundaiVelosterN/A
2013KiaForteN/A
2013KiaForte KoupN/A
2013KiaForte52.4LL4N/A
2013KiaOptimaN/A
2013KiaRioN/A
2013KiaSorentoN/A
2013KiaSoul2.0LL4N/A
2013KiaSportage2.0LL4N/A
2012HyundaiAccentAutomaticN/A
2012HyundaiAzeraN/A
2012HyundaiElantraAutomatic1.8LL4N/A
2012HyundaiSonataN/A
2012HyundaiVelosterN/A
2012KiaForteN/A
2012KiaForte KoupN/A
2012KiaForte5N/A
2012KiaOptimaN/A
2012KiaRioN/A
2012KiaSorentoN/A
2012KiaSoul2.0LL4N/A
2012KiaSportage2.0LL4N/A
2011HyundaiElantraAutomatic1.8LL4N/A
2011HyundaiSonataN/A
2011KiaForte KoupN/A
2011KiaOptimaN/A
2011KiaSportage2.0LL4N/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:

1S12267427003B100427003B500507-003068192769AA68273120AACSW563NS7068SW9332

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

Related Articles