ACDelco 12733506 PCV Foul Air Tube Assembly

The ACDelco 12733506 is a GM OE (Original Equipment) PCV Foul Air Tube Assembly designed to maintain the integrity of your engine's Positive Crankcase Ventilation (PCV) system. This tube routes blow-by gases — often referred to as "foul air" — from the crankcase back into the intake system, ensuring harmful vapors are re-burned rather than vented to the atmosphere.

As a genuine ACDelco replacement part, this assembly is manufactured to the same specifications as the original component installed at the factory, providing a precise fit and reliable long-term performance without modification.

Key Features:

• Genuine ACDelco OE replacement part for GM vehicles
• Designed to restore proper Positive Crankcase Ventilation (PCV) system function
• Routes crankcase blow-by (foul air) back to the intake for combustion
• Helps reduce harmful emissions and maintains engine cleanliness
• Direct OEM fit — no modifications required
• Manufactured to GM factory specifications for durability and exact fitment

A properly functioning PCV tube is essential for engine longevity, emissions compliance, and preventing oil sludge buildup caused by moisture and combustion gases trapped in the crankcase. Replace a cracked, brittle, or leaking PCV foul air tube with this ACDelco OE-quality assembly to restore your vehicle's emissions and ventilation system to factory condition.