NTK 21574
NTK part number 21574 is a oxygen (o2) sensor in the Exhaust & Emission system. This catalog matches it to 6 year-and-engine configurations from 1989 to 2018.
Verified fitment includes 2018 Cadillac CTS 3.6L V6 Turbocharged ; 2017 Cadillac Ats 3.6L V6 Turbocharged ; 2017 Cadillac CTS 3.6L V6 Turbocharged ; 1992 Geo Prizm 1.6L L4 ; 1991 Geo Prizm 1.6L L4 , plus 1 other configuration. See every vehicle this part fits.
Frequently Asked Questions
What is NTK 21574?
NTK part number 21574 is a oxygen (o2) sensor with published application data for 6 vehicle configurations from 1989 to 2018. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does NTK 21574 fit?
This catalog matches 21574 to 6 year-and-engine configurations from 1989 to 2018. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is NTK 21574 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. NTK 21574 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
AutoFactsDB is reader-supported. As an Amazon Associate, we earn from qualifying purchases made through links on this page — at no extra cost to you.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.