Spectra 94633 HVAC Heater Core

The Spectra 94633 HVAC heater core is a direct-fit replacement for select rear HVAC applications in Dodge and Plymouth vans. Built for 1977-1998 vehicles, it supports dependable cabin heat in models without air conditioning and is engineered to meet or exceed original equipment performance.

Key Features

• HVAC heater core for rear heating systems
• Fits select Dodge B100, B200, B300, B150, B250, and B350 applications
• Fits select Dodge B1500, B2500, B3500, Ram 1500 Van, Ram 2500 Van, and Ram 3500 Van applications
• Fits select Plymouth PB150, PB250, and PB350 applications
• Built with Spectra Premium manufacturing and quality control standards
• Part number 94633 for easy catalog lookup

Detailed Description

Spectra Premium HVAC heater cores are manufactured with engineering and quality control processes aimed at matching original equipment performance. This heater core is intended for rear HVAC use in select Dodge and Plymouth vans, including Dodge B150, B250, and B350 models, as well as Dodge Ram van and Plymouth PB applications listed in the fitment data. If you are replacing a leaking or restricted heater core on a rear heat system, Spectra 94633 provides a straightforward OE-style service part.

This part cross-references Four Seasons 91633 for the same application.

What It Helps Fix

• Weak or uneven rear cabin heat
• Coolant odor inside the vehicle from a leaking heater core
• Fogging or film on interior glass caused by heater core seepage
• Restricted coolant flow through the rear heater circuit
• Loss of heat output in older Dodge and Plymouth van HVAC systems

Installation Notes and Tips

Verify rear HVAC configuration and confirm the vehicle does not have air conditioning where noted in the fitment data before ordering. Compare the original heater core to the replacement unit for inlet and outlet orientation, mounting points, and overall dimensions prior to installation. After installation, refill and bleed the cooling system carefully to remove trapped air and restore proper heater performance.

Quality Assurance

Spectra Premium states that its engineering, manufacturing technology, and quality control processes are used to ensure this heater core meets or exceeds the performance of the original equipment it replaces.