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Part record
6.6L Duramax L5P NOx Sensor, Position 1 / Upstream (GM 12718742)
verified
OEM PN12718742
BrandGM
Replaces 12680619, 12680215.
Fitment years as listed in the OEM catalog on 2026-10-24.
Where to buy
Not listed online at Dave's Auto Center yet. Ask Dave's Auto Center about this part, quoting part number 12718742.