ACDelco 15978377 HVAC Heater Inlet Hose

The ACDelco 15978377 is a genuine GM OEM heater inlet hose designed to transport hot coolant from the engine to the HVAC heater core. This molded rubber hose is engineered to meet GM original equipment specifications for precise fit and reliable performance in GM vehicles including Chevrolet, GMC, and Oldsmobile models.

Key Specifications:

• Centerline Length: 22.375 inches (568mm)
• Inside Diameter: 7/8 inch (22mm) at both ends
• Material: High-quality EPDM rubber construction
• Configuration: Molded heater inlet hose with no branches
• UPC: 193468152012

Features and Benefits:

• Genuine GM part designed to original factory specifications
• Precision-molded construction ensures proper fit in tight engine compartments
• Durable rubber compound resists electrochemical degradation, the leading cause of hose failure
• Heat-resistant materials withstand extreme temperature variations
• OEM quality construction for long-lasting, reliable performance
• Backed by a 1-year limited warranty

This is a direct replacement heater hose for restoring your vehicle's HVAC system to factory condition. ACDelco heater hoses are designed, engineered, and tested specifically for GM vehicles to ensure optimal fit and function. Cross-reference part numbers include GM 15978377, ACDelco 18139L, Gates 19707, Dayco 88389, and NAPA 11707.