Spectra 99431 HVAC Heater Core

Spectra 99431 HVAC Heater Core

The Spectra 99431 HVAC heater core is an OE-style replacement for vehicles that need reliable cabin heat and stable coolant-to-air transfer. Built with Spectra Premium engineering and quality control, it is made to meet or exceed original equipment performance for the application.

• HVAC heater core for heating system repair and replacement
• OE-style fit and function for direct replacement service
• Manufactured with controlled engineering and quality processes
• Cross-references Gates 6956 for the same application

Application Details

Compatible with select Chevrolet and GMC truck and van applications that use heater core part number 99431. This part is commonly searched as a Chevrolet/GMC heater core replacement, HVAC heater core for truck and van heating repair, and Spectra Premium 99431 heater core.

This part cross-references Gates (e.g., 6956) for the same application.

Common Repair Uses

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Heater core leakage
• Restricted heat output from the HVAC system
• Replacement during cooling system service

Installation Notes

Verify the original heater core dimensions, hose connections, and HVAC case configuration before installation. Drain the cooling system as required, inspect related hoses and seals, and flush the system if contamination is present. Confirm fitment by matching the vehicle application to part number 99431 before assembly.

Quality Assurance

Spectra Premium states that its engineering, manufacturing technology, and quality control processes are used to produce heater cores that meet or exceed original equipment performance. Part number 99431 is built to support dependable HVAC repair service for compatible Chevrolet and GMC applications.