NTK Switching Oxygen Sensor: 4 Wire, 12.25" Long, Heated, Direct Fit, 21088
In stock
$61.99
Listed as compatible with this vehicle by the retailer feed.
Check price2020 Cadillac CT6 Oxygen Sensors
2 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
GM Genuine Parts Heated Oxygen Sensor, 12671088
In stock
$67.99
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.