GM 6.6L Duramax (LML) Exhaust Adapter (AS21012)


Adapter for:
EGR Tool (EGR64)
Part #: AS21012

Features of GM 6.6L Duramax (LML) Exhaust Adapter (AS21012):

This adapter needs to be used with the following components for GM 6.6L Duramax (LML) service:

  • Diesel Induction and EGR Service Tool (EGR64)
  • EGR Manifold Assembly (ZW21001)
  • GM 6.6L Duramax (LML) Exhaust Adapter (AS21012) – THIS PRODUCT
  • GM 6.6L Duramax (LMM/LML/L5P) Intake Adapter (ZW21007)

Additional information

Weight .4 lbs
Dimensions 9 × 6 × 2 in
Service Instructions

(must use specific engine job aids for all details)

① Remove the tool fill cap and fill tool with water-based cleaner.

② Install the exhaust and intake adapters.

③ Attach the adapters to the Affinity EG service manifold and connect the manifold to the Affinity EG Diesel Induction & EGR Service Tool.

④ Start the engine and bring to normal operating temperature.

⑤ Set tool pressure to 50-60 psi & open the Exhaust valve to run 32 oz of cleaner through the exhaust system.

⑥ Rotate the manifold valve to the exhaust setting and increase engine to 1500 RPM.  Run the remaining 32 oz through the induction system.

⑦ Run the engine 10 minutes after the cleaner is consumed and remove adapters.  Drive vehicle to clear/remove any loosened soot.

⑧ Run DPF regeneration cycle if required


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