APDI 9010378 HVAC Heater Core

APDI Heater Core for Lexus LS400

The APDI 9010378 heater core is built for 1995-2000 Lexus LS400 applications with a direct-fit aluminum construction. It is sized for the HVAC system with 10-1/4 in. core height, 5-3/4 in. core width, and 1 in. core thickness, plus 5/8 in. inlet and outlet pipe diameters.

Key Features

• Aluminum core and aluminum tank construction
• Core dimensions: 10-1/4 in. height, 5-3/4 in. width, 1 in. thickness
• 5/8 in. inlet pipe diameter and 5/8 in. outlet pipe diameter
• Kit included note for easier HVAC heater core service
• Direct replacement for Lexus LS400 heater core applications

Product Details

APDI Heater Core 9010378 is a heater core assembly for the Lexus LS400, covering 1995-2000 model years. The aluminum core and tank materials support efficient heat transfer and corrosion resistance in the HVAC system. This APDI heater core is a practical OE-style replacement for restoring cabin heat performance in Lexus LS400 vehicles.

This part cross-references Four Seasons 90036 and Spectra Premium 98036 for the same application.

Common Issues This Part Can Address

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Fogging from heater core leakage
• Restricted coolant flow through the HVAC heater circuit
• Loss of heat output in Lexus LS400 models

Installation Notes and Tips

Verify inlet and outlet pipe sizing before installation and compare the replacement core dimensions to the original unit. For 1995-2000 Lexus LS400 heater core service, inspect hoses, clamps, and surrounding HVAC components for wear or contamination before reassembly. The fitment notes indicate kit included, so confirm the vehicle-specific service procedure before beginning work.

Quality Assurance

APDI heater core 9010378 is built with aluminum construction for the listed Lexus LS400 applications. Confirm fitment by matching the year range and HVAC heater core dimensions to the original part before installation.