Homeβ€Ί Electrical, Lighting and Body > Switchesβ€Ί Standard Ignition NS-127 Clutch Starter Safety Switch
Part #: NS-127

Standard Ignition NS-127 Clutch Starter Safety Switch

βš™οΈ 345 vehicles fit this part
πŸ”
Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
$80.91Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
πŸ”„Free Returns*Wrong fit? No cost
πŸ›‘οΈ60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
πŸ”₯
βœ… In Stock Β· Ready To Ship Most orders ship same-day if ordered before 1pm CST.
βœ…OE Direct Replacement β€” Bolt-on fit, no modifications needed
πŸš—Fitment: Ford, Mazda, and Mercury, F-250 Super Duty, F-350 Super Duty, F-250, Explorer, F-350, Ranger, Thunderbird, B2300, B4000, Cougar, Aerostar, Bronco, F-150, B3000, E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline, E-350 Econoline, E-350 Econoline Club Wagon, E-250 Econoline Club Wagon, Colony Park, Grand Marquis, and Bronco II
πŸ”„Easy Returns β€” Return within 60 days for a full refund
🚚Fast Shipping β€” Most orders ship same business day before 1pm CST

Overview of Standard Ignition Clutch Starter Safety Switch NS-127

The Standard Ignition NS-127 clutch starter safety switch is designed to ensure safe engine starting by preventing the vehicle from starting unless the clutch pedal is fully depressed. This black plastic switch features a female connector and six male blade terminals, making it a reliable replacement part for select Ford, Mazda, and Mercury models.

  • Color: Black plastic housing for durability
  • Connector Gender: Female for secure connection
  • Terminal Quantity: 6 male blade terminals
  • Terminal Type: Blade terminals for easy wiring
  • Contents: Includes one clutch starter safety switch

Detailed Product Description

The NS-127 clutch starter safety switch from Standard Ignition is engineered to meet OEM specifications for electrical and safety components. Its plastic finish provides resistance to corrosion and wear, while the six male blade terminals ensure a stable and precise electrical connection. The female connector design allows for straightforward installation and compatibility with factory wiring harnesses. This switch is compatible with a range of Ford, Mazda, and Mercury vehicles, including popular models such as the Ford F-150, Explorer, Ranger, and the Mazda B2300 series.

Compatible Vehicles and Applications

This clutch starter safety switch is compatible with the following makes and models:

  • Ford: Aerostar, Bronco, Bronco II, E-150 Econoline, E-250 Econoline, E-350 Econoline, Explorer, F-150, F-250, F-250 Super Duty, F-350, F-350 Super Duty, Ranger, Thunderbird
  • Mazda: B2300, B3000, B4000
  • Mercury: Colony Park, Cougar, Grand Marquis

Common Issues Addressed by the NS-127 Switch

  • Prevents engine from starting without clutch engagement
  • Eliminates starter motor engagement issues related to faulty switches
  • Resolves intermittent starting problems caused by worn or damaged switches
  • Ensures compliance with vehicle safety starting protocols
  • Helps avoid electrical shorts or connection failures in the starting circuit

Installation Notes and Tips

  • Disconnect the battery before installation to prevent electrical shorts
  • Locate the existing clutch starter safety switch near the clutch pedal assembly
  • Ensure the female connector and blade terminals align correctly with the vehicle wiring harness
  • Verify clutch pedal travel and switch engagement after installation
  • Test the starting system to confirm proper operation before driving

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards for fit, form, and function. The NS-127 clutch starter safety switch undergoes rigorous quality control to ensure reliable performance. While specific warranty terms may vary, Standard Ignition typically offers a limited warranty against defects in material and workmanship. Refer to the product documentation or manufacturer for detailed warranty information.

BrandStandard Ignition
Part NumberNS-127
ColorBlack
Connector GenderFemale
ContentsClutch Starter Safety Switch
FinishPlastic
Terminal GenderMale
Terminal TypeBlade

This part fits 345 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2010FordF-250 Super DutyN/A
2010FordF-350 Super DutyN/A
2009FordF-250 Super DutyN/A
2009FordF-350 Super DutyN/A
2008FordF-250 Super DutyN/A
2008FordF-350 Super DutyN/A
2005FordF-250 Super DutyN/A
2005FordF-350 Super DutyN/A
2004FordF-250 Super DutyN/A
2004FordF-350 Super DutyN/A
2003FordF-250 Super DutyN/A
2003FordF-350 Super DutyN/A
2002FordF-250 Super DutyN/A
2002FordF-350 Super DutyN/A
2001FordF-250 Super DutyN/A
2001FordF-350 Super DutyN/A
2000FordF-250 Super DutyN/A
2000FordF-350 Super DutyN/A
1999FordF-250N/A
1999FordF-250 Super DutyN/A
1999FordF-350 Super DutyN/A
1998FordF-250N/A
1997FordExplorerN/A
1997FordF-250N/A
1997FordF-350N/A
1997FordRangerN/A
1997FordThunderbirdN/A
1997MazdaB2300N/A
1997MazdaB4000N/A
1997MercuryCougar3.8LV6N/A
1997MercuryCougar4.6LV8N/A
1996FordAerostar3.0LV6N/A
1996FordAerostar4.0LV6N/A
1996FordBroncoN/A
1996FordExplorerN/A
1996FordF-150N/A
1996FordF-250N/A
1996FordF-350N/A
1996FordRangerN/A
1996FordThunderbirdN/A
1996MazdaB2300N/A
1996MazdaB3000N/A
1996MazdaB4000N/A
1996MercuryCougar3.8LV6N/A
1996MercuryCougar4.6LV8N/A
1995FordAerostar3.0LV6N/A
1995FordAerostar4.0LV6N/A
1995FordBroncoN/A
1995FordExplorerN/A
1995FordF-150N/A
1995FordF-250N/A
1995FordF-350N/A
1995FordRangerN/A
1995FordThunderbird3.8LV6N/A
1995FordThunderbirdN/A
1995MazdaB2300N/A
1995MazdaB3000N/A
1995MazdaB4000N/A
1995MercuryCougar3.8LV6N/A
1995MercuryCougar4.6LV8N/A
1994FordAerostar3.0LV6N/A
1994FordAerostar4.0LV6N/A
1994FordAerostarN/A
1994FordBroncoN/A
1994FordExplorer4.0LV6N/A
1994FordExplorerN/A
1994FordF-150N/A
1994FordF-250N/A
1994FordF-350N/A
1994FordRangerN/A
1994FordThunderbird3.8LV6N/A
1994FordThunderbirdN/A
1994MazdaB2300N/A
1994MazdaB3000N/A
1994MazdaB4000N/A
1994MercuryCougar3.8LV6N/A
1994MercuryCougar4.6LV8N/A
1993FordAerostar3.0LV6N/A
1993FordAerostar4.0LV6N/A
1993FordAerostarN/A
1993FordBroncoN/A
1993FordExplorer4.0LV6N/A
1993FordExplorerN/A
1993FordF-150N/A
1993FordF-250N/A
1993FordF-350N/A
1993FordRangerN/A
1993FordThunderbird3.8LV6N/A
1993FordThunderbirdN/A
1993MercuryCougar3.8LV6N/A
1993MercuryCougar5.0LV8N/A
1992FordAerostar3.0LV6N/A
1992FordAerostar4.0LV6N/A
1992FordAerostarN/A
1992FordBronco4.9LL6N/A
1992FordBronco5.0LV8N/A
1992FordBronco5.8LV8N/A
1992FordBroncoN/A
1992FordE-150 Econoline4.9LL6N/A
1992FordE-150 Econoline5.0LV8N/A
1992FordE-150 Econoline5.8LV8N/A
1992FordE-150 Econoline Club Wagon4.9LL6N/A
1992FordE-150 Econoline Club Wagon5.0LV8N/A
1992FordE-150 Econoline Club Wagon5.8LV8N/A
1992FordE-250 Econoline4.9LL6N/A
1992FordE-250 Econoline5.8LV8N/A
1992FordE-350 EconolineN/A
1992FordE-350 Econoline4.9LL6N/A
1992FordE-350 Econoline5.8LV8N/A
1992FordE-350 Econoline7.3LV8N/A
1992FordE-350 Econoline7.5LV8N/A
1992FordE-350 Econoline Club Wagon4.9LL6N/A
1992FordE-350 Econoline Club Wagon5.8LV8N/A
1992FordE-350 Econoline Club Wagon7.3LV8N/A
1992FordE-350 Econoline Club Wagon7.5LV8N/A
1992FordExplorer4.0LV6N/A
1992FordExplorerN/A
1992FordF-150N/A
1992FordF-1505.0LV8N/A
1992FordF-1505.8LV8N/A
1992FordF-250N/A
1992FordF-2504.9LL6N/A
1992FordF-2505.0LV8N/A
1992FordF-2505.8LV8N/A
1992FordF-2507.3LV8N/A
1992FordF-2507.5LV8N/A
1992FordF-350N/A
1992FordF-3504.9LL6N/A
1992FordF-3505.8LV8N/A
1992FordF-3507.3LV8N/A
1992FordF-3507.5LV8N/A
1992FordRanger2.3LL4N/A
1992FordRanger2.9LV6N/A
1992FordRanger3.0LV6N/A
1992FordRanger4.0LV6N/A
1992FordRangerN/A
1992FordThunderbird3.8LV6N/A
1992FordThunderbirdN/A
1992MercuryCougar3.8LV6N/A
1992MercuryCougar5.0LV8N/A
1991FordAerostar3.0LV6N/A
1991FordAerostar4.0LV6N/A
1991FordAerostarN/A
1991FordBronco4.9LL6N/A
1991FordBronco5.0LV8N/A
1991FordBronco5.8LV8N/A
1991FordBroncoN/A
1991FordE-150 Econoline4.9LL6N/A
1991FordE-150 Econoline5.0LV8N/A
1991FordE-150 Econoline5.8LV8N/A
1991FordE-150 Econoline Club Wagon4.9LL6N/A
1991FordE-150 Econoline Club Wagon5.0LV8N/A
1991FordE-150 Econoline Club Wagon5.8LV8N/A
1991FordE-250 Econoline4.9LL6N/A
1991FordE-250 Econoline5.0LV8N/A
1991FordE-250 Econoline5.8LV8N/A
1991FordE-250 Econoline Club Wagon4.9LL6N/A
1991FordE-250 Econoline Club Wagon5.8LV8N/A
1991FordE-250 Econoline Club Wagon7.3LV8N/A
1991FordE-250 Econoline Club Wagon7.5LV8N/A
1991FordE-350 Econoline4.9LL6N/A
1991FordE-350 Econoline5.8LV8N/A
1991FordE-350 Econoline7.3LV8N/A
1991FordE-350 Econoline7.5LV8N/A
1991FordE-350 Econoline Club Wagon4.9LL6N/A
1991FordE-350 Econoline Club Wagon5.8LV8N/A
1991FordE-350 Econoline Club Wagon7.3LV8N/A
1991FordE-350 Econoline Club Wagon7.5LV8N/A
1991FordExplorer4.0LV6N/A
1991FordExplorerN/A
1991FordF-150N/A
1991FordF-1505.0LV8N/A
1991FordF-1505.8LV8N/A
1991FordF-250N/A
1991FordF-2504.9LL6N/A
1991FordF-2505.0LV8N/A
1991FordF-2505.8LV8N/A
1991FordF-2507.3LV8N/A
1991FordF-2507.5LV8N/A
1991FordF-350N/A
1991FordF-3504.9LL6N/A
1991FordF-3505.8LV8N/A
1991FordF-3507.3LV8N/A
1991FordF-3507.5LV8N/A
1991FordRanger2.3LL4N/A
1991FordRanger2.9LV6N/A
1991FordRanger3.0LV6N/A
1991FordRanger4.0LV6N/A
1991FordRangerN/A
1991FordThunderbird3.8LV6N/A
1991FordThunderbirdN/A
1991MercuryColony Park5.0LV8N/A
1991MercuryCougar3.8LV6N/A
1991MercuryCougar5.0LV8N/A
1991MercuryGrand Marquis5.0LV8N/A
1990FordAerostar3.0LV6N/A
1990FordAerostar4.0LV6N/A
1990FordAerostarN/A
1990FordBronco4.9LL6N/A
1990FordBronco5.0LV8N/A
1990FordBronco5.8LV8N/A
1990FordBroncoN/A
1990FordBronco II2.9LV6N/A
1990FordBronco IIN/A
1990FordE-150 Econoline4.9LL6N/A
1990FordE-150 Econoline5.0LV8N/A
1990FordE-150 Econoline5.8LV8N/A
1990FordE-150 Econoline Club Wagon4.9LL6N/A
1990FordE-150 Econoline Club Wagon5.0LV8N/A
1990FordE-150 Econoline Club Wagon5.8LV8N/A
1990FordE-250 Econoline4.9LL6N/A
1990FordE-250 Econoline5.0LV8N/A
1990FordE-250 Econoline5.8LV8N/A
1990FordE-250 Econoline Club Wagon4.9LL6N/A
1990FordE-250 Econoline Club Wagon5.8LV8N/A
1990FordE-250 Econoline Club Wagon7.3LV8N/A
1990FordE-250 Econoline Club Wagon7.5LV8N/A
1990FordE-350 Econoline4.9LL6N/A
1990FordE-350 Econoline5.8LV8N/A
1990FordE-350 Econoline7.3LV8N/A
1990FordE-350 Econoline7.5LV8N/A
1990FordE-350 Econoline Club Wagon4.9LL6N/A
1990FordE-350 Econoline Club Wagon5.8LV8N/A
1990FordE-350 Econoline Club Wagon7.3LV8N/A
1990FordE-350 Econoline Club Wagon7.5LV8N/A
1990FordF-150N/A
1990FordF-1505.0LV8N/A
1990FordF-1505.8LV8N/A
1990FordF-250N/A
1990FordF-2504.9LL6N/A
1990FordF-2505.0LV8N/A
1990FordF-2505.8LV8N/A
1990FordF-2507.3LV8N/A
1990FordF-2507.5LV8N/A
1990FordF-350N/A
1990FordF-3504.9LL6N/A
1990FordF-3505.8LV8N/A
1990FordF-3507.3LV8N/A
1990FordF-3507.5LV8N/A
1990FordRanger2.3LL4N/A
1990FordRanger2.9LV6N/A
1990FordRanger4.0LV6N/A
1990FordRangerN/A
1990FordThunderbirdN/A
1990MercuryCougar3.8LV6N/A
1990MercuryCougarN/A
1989FordAerostarN/A
1989FordBronco4.9LL6N/A
1989FordBronco5.0LV8N/A
1989FordBronco5.8LV8N/A
1989FordBroncoN/A
1989FordBronco II2.9LV6N/A
1989FordBronco IIN/A
1989FordE-150 Econoline4.9LL6N/A
1989FordE-150 Econoline5.0LV8N/A
1989FordE-150 Econoline5.8LV8N/A
1989FordE-150 EconolineN/A
1989FordE-150 Econoline Club Wagon4.9LL6N/A
1989FordE-150 Econoline Club Wagon5.0LV8N/A
1989FordE-150 Econoline Club Wagon5.8LV8N/A
1989FordE-150 Econoline Club WagonN/A
1989FordE-250 Econoline4.9LL6N/A
1989FordE-250 Econoline5.0LV8N/A
1989FordE-250 Econoline5.8LV8N/A
1989FordE-250 Econoline Club Wagon4.9LL6N/A
1989FordE-250 Econoline Club Wagon5.8LV8N/A
1989FordE-250 Econoline Club Wagon7.3LV8N/A
1989FordE-250 Econoline Club Wagon7.5LV8N/A
1989FordE-350 Econoline4.9LL6N/A
1989FordE-350 Econoline5.8LV8N/A
1989FordE-350 Econoline7.3LV8N/A
1989FordE-350 Econoline7.5LV8N/A
1989FordE-350 EconolineN/A
1989FordE-350 Econoline Club Wagon4.9LL6N/A
1989FordE-350 Econoline Club Wagon5.8LV8N/A
1989FordE-350 Econoline Club Wagon7.3LV8N/A
1989FordE-350 Econoline Club Wagon7.5LV8N/A
1989FordF-150N/A
1989FordF-1505.0LV8N/A
1989FordF-1505.8LV8N/A
1989FordF-250N/A
1989FordF-2504.9LL6N/A
1989FordF-2505.0LV8N/A
1989FordF-2505.8LV8N/A
1989FordF-2507.3LV8N/A
1989FordF-2507.5LV8N/A
1989FordF-350N/A
1989FordF-3504.9LL6N/A
1989FordF-3505.8LV8N/A
1989FordF-3507.3LV8N/A
1989FordF-3507.5LV8N/A
1989FordRanger2.3LL4N/A
1989FordRanger2.9LV6N/A
1989FordRangerN/A
1989FordThunderbirdN/A
1989MercuryCougar3.8LV6N/A
1989MercuryCougarN/A
1988FordBronco4.9LL6N/A
1988FordBronco5.0LV8N/A
1988FordBronco5.8LV8N/A
1988FordBroncoN/A
1988FordBronco II2.9LV6N/A
1988FordBronco IIN/A
1988FordE-150 Econoline4.9LL6N/A
1988FordE-150 Econoline5.0LV8N/A
1988FordE-150 Econoline5.8LV8N/A
1988FordE-150 EconolineN/A
1988FordE-150 Econoline Club Wagon4.9LL6N/A
1988FordE-150 Econoline Club Wagon5.0LV8N/A
1988FordE-150 Econoline Club Wagon5.8LV8N/A
1988FordE-150 Econoline Club WagonN/A
1988FordE-250 Econoline4.9LL6N/A
1988FordE-250 Econoline5.0LV8N/A
1988FordE-250 Econoline5.8LV8N/A
1988FordE-250 Econoline Club Wagon4.9LL6N/A
1988FordE-250 Econoline Club Wagon5.8LV8N/A
1988FordE-250 Econoline Club Wagon7.3LV8N/A
1988FordE-250 Econoline Club Wagon7.5LV8N/A
1988FordE-350 Econoline4.9LL6N/A
1988FordE-350 Econoline5.8LV8N/A
1988FordE-350 Econoline7.3LV8N/A
1988FordE-350 Econoline7.5LV8N/A
1988FordE-350 EconolineN/A
1988FordE-350 Econoline Club Wagon4.9LL6N/A
1988FordE-350 Econoline Club Wagon5.8LV8N/A
1988FordE-350 Econoline Club Wagon7.3LV8N/A
1988FordE-350 Econoline Club Wagon7.5LV8N/A
1988FordF-150N/A
1988FordF-1505.0LV8N/A
1988FordF-1505.8LV8N/A
1988FordF-250N/A
1988FordF-2504.9LL6N/A
1988FordF-2505.0LV8N/A
1988FordF-2505.8LV8N/A
1988FordF-2507.3LV8N/A
1988FordF-2507.5LV8N/A
1988FordF-350N/A
1988FordF-3504.9LL6N/A
1988FordF-3505.8LV8N/A
1988FordF-3507.3LV8N/A
1988FordF-3507.5LV8N/A
1988FordRanger2.0LL4N/A
1988FordRanger2.3LL4N/A
1988FordRanger2.9LV6N/A
1988FordRangerN/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:

1C3Z11A152AA1S53312-88425129153-126256M1884288923340F437NS127TNS225NS38035NS6818NS6818SBSW5993ZZL067850

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