Heater Hose Connector for 6.6L Duramax LB7 LLY LBZ LMM LML for Chevy Silverado for GMC Sierra 2001-2014

Model	Year Range	Engine
for Chevy Silverado 2500 HD, Silverado 3500 HD, Silverado 3500 Chassis Cab	2001- 2014	6.6L Duramax Diesel LB7 LLY LBZ LMM LML
for Chevy Express 3500	2003-2014	6.6L Duramax Diesel
for GMC Sierra 2500 HD, Sierra 3500 HD, Sierra 3500 Chassis Cab	2001-2014	6.6L Duramax Diesel LB7 LLY LBZ LMM LML
for GMC Savana 3500	2003-2014	6.6L Duramax Diesel

Product Overview

This coolant connector is designed for the heater hose connection at the heater core. It replaces cracked, leaking, worn, or damaged factory style fittings and helps restore a secure connection between the heater hose and the heater core on compatible 6.6L Duramax Diesel vehicles.

• Brand: EGR Performance
• Part type: Heater hose connector and coolant connector
• Connector position: Heater core inlet and outlet application where the matching connector is used
• Fitment type: Direct replacement style
• Quick connect system: Yes
• Package quantity: 1 connector

Common Faults & Replacement Symptoms

• Coolant seepage or visible coolant leak at the heater core quick disconnect on for Chevy Silverado HD or for GMC Sierra HD 6.6L Duramax Diesel.
• Cracked plastic coolant connector body causing coolant odor, residue, or wetness near the heater hose connection.
• Loose heater hose connection at the heater core after the original fitting becomes worn or damaged.
• Low coolant level or repeated coolant top off needs caused by a leaking heater hose connector.
• Reduced cabin heat if coolant loss or air entry affects normal heater core circulation.
• Engine temperature concerns if coolant loss is severe and not corrected promptly.
• This heater hose connector normally does not create a specific diagnostic trouble code by itself, but coolant loss can contribute to overheating related warnings.
• Use this part only when the vehicle, engine, and replacement for OEM number match the application.

Ideal For

• DIY owners repairing a leaking heater core hose connector on for Chevy Silverado or for GMC Sierra 6.6L Duramax Diesel trucks.
• Professional technicians servicing heater hose quick disconnect fittings on compatible HD diesel pickups and 3500 vans.
• Fleet maintenance teams replacing worn coolant connectors on for Chevy Express 3500 or for GMC Savana 3500 Duramax vehicles.
• Buyers needing a black plastic straight fitting with quick disconnect and hose barb ends.