Standard SMP SG1066 Oxygen Sensor – 4-Wire – Fits Cadillac, Chevrolet, GMC, Hummer, Saab

This is a brand new Standard Motor Products oxygen sensor, model SG1066.

It's a direct replacement for a wide range of GM vehicles, including Cadillac, Chevrolet, GMC, Hummer, and Saab models.

This is a 4-wire sensor, and it's about 15 inches long.

It's made in the USA.

Interchange numbers include 234-4669, 21549, 15282, 250-24491, 2131161, 12572705, and ES20008.

It comes in bulk packaging (not in a retail box), but it's a genuine Standard MP part.

If your check engine light is on for an O2 sensor code, this is the part you need to get your fuel trims back in line.

Direct fit, easy install.