NTK 21546
NTK part number 21546 is a oxygen (o2) sensor in the Exhaust & Emission system. This catalog matches it to 9 year-and-engine configurations from 2004 to 2014.
Verified fitment includes 2014 Cadillac CTS 6.2L V8 Supercharged ; 2012 Cadillac CTS 6.2L V8 Supercharged ; 2012 Cadillac Escalade 6.0L V8 ELECTRIC/GAS ; 2012 Cadillac Escalade 6.2L V8 ; 2009 Buick Lucerne 3.9L V6 , plus 4 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is NTK 21546?
NTK part number 21546 is a oxygen (o2) sensor with published application data for 9 vehicle configurations from 2004 to 2014. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does NTK 21546 fit?
This catalog matches 21546 to 9 year-and-engine configurations from 2004 to 2014. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is NTK 21546 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. NTK 21546 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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