Nissens 73942 HVAC Heater Core

Nissens 73942 HVAC Heater Core for Volkswagen Jetta

The Nissens 73942 HVAC heater core is built for 2011-2018 Volkswagen Jetta applications, including the 2011 Volkswagen Jetta Sedan. It uses aluminum for both the core and tanks, with brazed cooling fins for efficient heat transfer and consistent cabin heat output.

Key Features

• Aluminum core and aluminum tank construction
• Brazed cooling fins for durable thermal performance
• Pipe included for application-specific installation
• Direct-fit heater core for Volkswagen Jetta HVAC service
• Part number 73942 for accurate ordering and lookup

Product Details

Nissens develops thermal management components with a focus on OE-style fit and manufacturing consistency. The 73942 heater core is designed for Volkswagen Jetta models from 2011 through 2018, making it a practical replacement when the original heater core is leaking, restricted, or no longer transferring heat properly. This part cross-references Four Seasons 98120 and Spectra Premium 99384 for the same application. If you are searching for a Volkswagen Jetta heater core 2011-2018 or a Nissens 73942 replacement heater core, this unit matches the listed fitment and construction details.

What It Helps Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Fogging from heater core leakage
• Restricted coolant flow through the HVAC core
• Heat loss caused by a damaged or corroded heater core

Installation Notes and Tips

Verify vehicle fitment by year and model before installation. On Volkswagen Jetta heater core replacement jobs, inspect the HVAC housing, coolant lines, and seals for wear or contamination before reassembly. Flush the cooling system if coolant condition is poor, and confirm there are no leaks after installation. The included pipe should be matched to the application during service.

Quality Assurance

Nissens manufactures thermal components to controlled quality standards and continuously updates its aftermarket product range to keep pace with changing vehicle technology. The 73942 heater core reflects that approach with aluminum construction and brazed fin design for dependable service in the listed Volkswagen Jetta applications.