S&B Heater Core Supply Hose 83-1013

Heater Core Supply Hose for 2003-2024 Cummins 5.9L and 6.7L

The S&B Heater Core Supply Hose 83-1013 replaces the leak-prone factory heater core supply hose on 2003-2024 Cummins 5.9L and 6.7L diesel engines. S&B upgrades the factory design with better materials to provide a stronger, longer-lasting solution.

The factory hose uses a plastic fitting near the cylinder head. Over time, heat and age can cause this fitting to crack. As a result, coolant can begin leaking from the connection. S&B replaces that plastic fitting with stainless steel to address the weak point in the factory design.

Stop Coolant Leaks From the Factory Fitting

The location of the factory fitting exposes it to engine heat throughout the life of the truck. Eventually, repeated heat cycles and age can weaken the plastic. Therefore, cracks and coolant leaks can develop around the fitting.

S&B designed this replacement hose to eliminate the plastic fitting. Instead, the 83-1013 uses a stainless steel fitting for improved strength and long-term use.

Key Features

• Fits 2003-2024 Cummins 5.9L and 6.7L diesel engines
• Replaces the factory heater core supply hose
• Addresses the leak-prone OEM plastic fitting
• Stainless steel fitting replaces the factory plastic fitting
• Heavy-duty silicone wrapped hose
• Designed for long-term durability
• Helps prevent coolant leaks near the cylinder head
• Uses upgraded materials compared to the OEM design
• Direct replacement for the factory component

Stainless Steel Fitting for Better Durability

S&B replaces the factory plastic fitting with a stainless steel fitting. Therefore, the replacement part eliminates the plastic connection that can crack from heat and age.

Additionally, stainless steel provides a much stronger connection in this high-heat area of the engine. As a result, owners can replace the weak factory component instead of repeatedly dealing with the same plastic fitting.

Heavy-Duty Silicone Wrapped Hose

S&B also uses a heavy-duty silicone wrapped hose for this replacement. Combined with the stainless steel fitting, the upgraded hose provides a durable replacement for the original heater core supply hose.

More importantly, S&B designed the complete assembly to address the known weak point instead of simply copying the factory design. Therefore, the upgrade provides a practical solution when the original hose begins leaking or when owners want to replace the factory part before it fails.

Simple Upgrade for 5.9L and 6.7L Cummins Trucks

A leaking heater core supply hose can lead to coolant loss and create another repair that needs immediate attention. However, replacing the factory hose with upgraded materials addresses the problem at its source.

The S&B Heater Core Supply Hose provides Cummins owners with a straightforward replacement built around a stainless steel fitting and heavy-duty silicone wrapped hose. As a result, the 83-1013 offers a stronger alternative to the leak-prone factory design.

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