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Holley 554-155 Sniper EFI Wideband Oxygen Sensor

510-554-155


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554-155 Sniper EFI Wideband Oxygen Sensor
$143.95
5 left in stock
Sniper EFI Wideband Oxygen Sensor
  • Replacement Part for Holley Sniper EFI and Terminator X Systems
  • Bosch LSU 4.9
  • Ships
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    554-155 is rated 4.3 out of 5 by 7.
    Rated 5 out of 5 by from 35.6 AFR Fixed! It works for my holly terminator EFI that was showing 35.6 AFR and running rich.
    Date published: 2022-06-27
    Rated 5 out of 5 by from Replacement Replaced the O2 sensor on my Holley Sniper EFI and took care of the problem of running rich.
    Date published: 2022-03-09
    Rated 5 out of 5 by from Works great Third o2 sensor I’ve bought. They work great until you smash them into your frame rail.
    Date published: 2020-04-14
    Rated 4 out of 5 by from Sniper Bought this a year ago, after install ran great for about 250 miles. Put the car in storage for three months and started having issues. Replaced O2 sensor but continued to have AFR issues running too rich. Sent unit back to Holley. It's there now.
    Date published: 2018-03-12
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    What is the tread size on these? The NPT? 

    Asked by: Gonzalo177
    The O2 sensor thread size is standard and will be M18-1.5mm.
    Answered by: Rusty B
    Date published: 2023-08-01
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