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Part record

Duramax LML Emission Control Valve, Parallel Chain (OEM)

verified OEM PN12639421

Parallel-chain ambiguity: the catalog lists two 2011-2016 diesel emission valves without naming the function difference - verify against the VIN at order. Checked against the GM parts catalog (category pages fetched 2026-09-29/30, part card 2026-09-30).

Where to buy

Not listed online at Dave's Auto Center yet. Ask Dave's Auto Center about this part, quoting part number 12639421.

Fits (24 configurations)