Nissens 72049 HVAC Heater Core - Rear

Nissens 72049 Rear HVAC Heater Core

The Nissens 72049 HVAC heater core is built for rear climate control systems in select Mercedes-Benz SUVs and utility models. It uses aluminum for both the core and tanks, with brazed cooling fins for efficient heat transfer and a compact OE-style fit.

• Aluminum core material and aluminum tank construction
• Brazed cooling fins for consistent thermal performance
• Rear HVAC heater core for rear air conditioning and auxiliary HVAC systems
• Compact dimensions: 5.1600 in. core height, 6.5400 in. core length, 1.2600 in. core width
• Pipe included: No
• Cross-reference: Spectra Premium 98136

Vehicle Fitment

• Fits 2010-2012 Mercedes-Benz GL350, rear, REAR AC
• Fits 2007-2012 Mercedes-Benz GL450, rear, REAR AC
• Fits 2008-2012 Mercedes-Benz GL550, rear, REAR AC
• Fits 2006-2012 Mercedes-Benz R350, rear, For Auxiliary HVAC; REAR AC
• Fits 2007-2009 Mercedes-Benz GL320, rear, REAR AC
• Fits 2007-2009 Mercedes-Benz R320, rear, For Auxiliary HVAC; REAR AC
• Fits 2006-2007 Mercedes-Benz R500, rear, For Auxiliary HVAC; REAR AC
• Fits 2007 Mercedes-Benz R63 AMG, rear, For Auxiliary HVAC; REAR AC

Detailed Description

Nissens 72049 is a rear HVAC heater core for Mercedes-Benz GL-Class and R-Class applications with rear AC or auxiliary HVAC equipment. It is engineered with aluminum core and tank construction and brazed cooling fins to support heat exchange in the rear climate circuit. This part number is also referenced as 1648300261 and A1648300261, and it cross-references Spectra Premium 98136 for the same application. Nissens 72049 is a direct-fit style replacement for rear climate service on Mercedes-Benz GL350, GL450, GL550, GL320, R350, R320, R500, and R63 AMG models listed above.

Common Replacement Reasons

• Rear cabin heat output is reduced
• Coolant odor or moisture appears near the rear HVAC area
• Heater core leakage is diagnosed during cooling system inspection
• Rear AC or auxiliary HVAC performance is inconsistent
• Corrosion or internal blockage is found in the original heater core

Installation Notes

Verify rear HVAC configuration before ordering, since this part is listed for rear applications with REAR AC or auxiliary HVAC notes. Confirm the OE part number, mounting layout, and hose connection style against the removed unit before installation. Because pipe included is listed as No, reuse or source the required pipes and related seals as needed for the vehicle-specific repair.

Quality Assurance

Nissens develops and manufactures thermal management components to OE-level standards for the aftermarket, with a focus on consistent material quality and application coverage. Part number 72049 is built as a rear heater core replacement for the specified Mercedes-Benz fitments.