Nissens 707291 HVAC Heater Core

Nissens 707291 Heater Core for Civic and RSX

The Nissens 707291 HVAC heater core is built for direct replacement in select Honda Civic and Acura RSX applications. It uses aluminum construction throughout, with brazed cooling fins and integrated pipes for a clean OE-style fit.

Key Features

• Aluminum core material and aluminum tank material
• Brazed cooling fins for efficient heat transfer
• Inlet pipe diameter: 0.63 in.
• Outlet pipe diameter: 0.63 in.
• Core dimensions: 6.5000 in. height, 7.8700 in. length, 1.0200 in. width
• Pipe included: Yes
• Fits 2002-2005 Honda Civic, N/A
• Fits 2003-2004 Acura RSX, N/A
• Fits 2002 Acura RSX, N/A, from chassis/VIN 2C033981
• Fits 2002 Acura RSX, N/A, to chassis/VIN 2C033980

Detailed Description

Nissens develops thermal management components with a focus on consistent manufacturing quality and aftermarket coverage. Part number 707291 is a heater core for select Honda Civic and Acura RSX models, including 2002-2005 Honda Civic and 2003-2004 Acura RSX applications, plus 2002 Acura RSX vehicles identified by chassis/VIN breakpoints. If you are searching for a heater core for 2002-2005 Honda Civic or Acura RSX HVAC repair, this part number 707291 provides the correct fitment reference for those vehicles.

This part cross-references Honda OE numbers 79110S6DG01 and 79110S6DG02 for the same application.

What It Helps Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Coolant seepage at the HVAC core
• Restricted heater performance from a failing core
• HVAC temperature control problems in Civic and RSX models

Installation Notes and Tips

Verify the vehicle year, model, and VIN break point before ordering, especially for 2002 Acura RSX applications. Compare the inlet and outlet pipe size, core dimensions, and hose routing to the original unit before installation. Flush the cooling system and inspect related hoses and seals during heater core replacement to help prevent repeat contamination.

Quality Assurance

Nissens positions this heater core within its Genuine Nissens Quality standard, with development and manufacturing focused on thermal system performance and aftermarket fitment coverage.