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Crankcase Ventilation System for 2003 GMC Sierra 2500 HD

Part # / Description / Price
Crankcase Vent Breather Valve
MSRP $19.30
GM GM

Engine Crankcase Vent Valve

Helps remove moisture and sludge build up in engine oil This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Positive Crank Ventilation (PCV) Valve
GM GM

PCV Valve

All models. 6.6l. Helps remove moisture and sludge build up in engine oil