Four Seasons 90070 HVAC Heater Core - Front

Heater Core for Honda and Acura Applications

Four Seasons Heater Core 90070 is an aluminum HVAC heater core built to match OE-style dimensions and performance requirements. It is a direct replacement for select Honda and Acura front heater core applications, including Honda Pilot, Acura MDX, Honda Odyssey, and Honda Accord models.

Key Features

• Four Seasons Heater Core, part number 90070
• Aluminum core construction for efficient heat transfer
• Core dimensions: 7 in. height, 8-1/8 in. width, 1-1/4 in. thickness
• Tube sizes: 0.625 in. and 0.750 in.
• Meets or exceeds OEM requirements
• Front-position heater core applications

Product Details

The Four Seasons 90070 heater core is designed for HVAC systems that require a compact aluminum core with OE-matching dimensions. Its 7.000-inch height, 8.125-inch width, and 1.250-inch depth support proper fitment in the specified Honda and Acura vehicles. This heater core is listed for front heater core applications and is built to meet or exceed OEM specifications for replacement service. Cross-reference part numbers include Spectra Premium 93070 and UAC HT398215C for the same application.

Compatible With 2003-2008 Honda Pilot, front heater core; 2001-2006 Acura MDX, front heater core; 1999-2004 Honda Odyssey, front heater core; and 1998-2002 Honda Accord, heater core application. The Four Seasons 90070 is also referenced for 1998-2002 Honda Accord HVAC service where the heater core is the required component.

Common Problems This Part Can Address

• Weak or uneven cabin heat output
• Coolant odor inside the vehicle cabin
• Interior windshield fogging caused by heater core leakage
• Loss of heat due to internal heater core blockage
• Coolant seepage from a deteriorated HVAC heater core

Installation Notes and Tips

Verify core dimensions, tube size, and vehicle application before installation. Because heater core replacement often requires HVAC case access, inspect related hoses, clamps, and coolant condition during service. Confirm the front-position application for the listed Honda and Acura models, and compare the original unit to the Four Seasons 90070 before final assembly.

Quality Assurance

This heater core is manufactured to meet or exceed OEM requirements and uses aluminum construction for consistent heat exchange performance. Four Seasons Heater Core 90070 is intended as an OE-style replacement for select Honda and Acura HVAC systems.