Diesel Emissions Fluid (DEF) System Main Wiring Harness. Diesel Exhaust Fluid (DEF) System Main Wiring Harness. A combination of wires and connectors that electrically attach the Diesel Exhaust Fluid System components to one another or to other vehicle Harnesses. This is the Main Harness to all components of System-not just to one component.
Fits Sierra 2500 HD, Sierra 3500 HD, Silverado6.6 LITER DIESEL, EMISSION REDUCTION SYSTEM, 2nd design. 6.6 LITER DIESEL, EMISSION REDUCTION SYSTEM, all.
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Installed price includes part and dealer installation cost, local taxes not included.