Replacement NTK Wideband Oxygen Sensor for C950 or Holley EFI.

PART# 554-100


Replacement Holley EFI NTK Wide band Oxygen sensor. This sensor is a direct replacement for Holley HP, Dominator, Avenger and Terminator EFI systems. Each Sensor is hand calibrated to insure accurate readings when used in conjunction with your Holley EFI system.


Also compatible with 2nd Gen C950 or Holley EFI. Replaces Part # 534-194



Brand Holley EFI
Connector type 8 Pin metri-pack 150
Emission Code 3
Oxygen Sensor Type NTK
Pig Tail Length 24"
Product Type Oxygen Sensor
Sensor Type Lambda Wide Band
Thread Size 18mm x 1.5
Part Number 554-100



Notes: NTK wideband sensors are recommended when using leaded or methanol fuels, high exhaust temperatures and forced induction applications, or for the highest precision feedback.


Emissions: 3

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.