NTK 21555
NTK part number 21555 is a oxygen (o2) sensor in the Exhaust & Emission system. This catalog matches it to 7 year-and-engine configurations from 2008 to 2017.
Verified fitment includes 2017 Buick Regal 2.4L L4 ; 2017 Buick Verano 2.4L L4 ; 2016 Buick Regal 2.4L L4 ; 2015 Buick Regal 2.4L L4 ; 2014 Buick Lacrosse 2.4L L4 , plus 2 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is NTK 21555?
NTK part number 21555 is a oxygen (o2) sensor with published application data for 7 vehicle configurations from 2008 to 2017. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does NTK 21555 fit?
This catalog matches 21555 to 7 year-and-engine configurations from 2008 to 2017. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is NTK 21555 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. NTK 21555 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
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