Replace the weak, leak-prone plastic heater core firewall fittings on your Duramax with these upgraded stainless steel connectors.
The factory plastic heater hose connectors commonly fail over time due to heat cycles and vibration, leading to cracking and coolant leaks. This upgraded Dorman OE FIX replacement is built from corrosion-resistant stainless steel for long-term durability and a secure seal.
Features
Improved design for greater durability over the original factory connector
Stainless steel construction helps prevent heat fatigue and vibration damage
Direct replacement for an easy install with OEM-style fitment
Quality tested for proper fit and long service life (corrosion, heat, and pressure tested)
