Spectra 94821 HVAC Heater Core - Front

Spectra 94821 HVAC Heater Core

The Spectra 94821 HVAC heater core is a specific-fit replacement for select Cadillac, Chevrolet, Buick, and GMC applications. Built with aluminum core, tank, and tube materials, it is engineered to match the performance expectations of the original equipment unit it replaces.

• Specific-fit HVAC heater core for direct application matching
• Aluminum core material for efficient heat transfer
• Aluminum tank and tube construction
• Inlet pipe diameter: 0.875 in. (21.9 mm)
• Outlet pipe diameter: 0.875 in. (21.9 mm)
• Dimensions: 8.0625 in. H x 6.125 in. W x 1.25 in. L

Fitment Coverage

Compatible with 2017-2026 Cadillac XT5, 2020-2025 Cadillac XT6, 2019-2025 Chevrolet Blazer, 2018-2024 Buick Enclave, 2024 Chevrolet Traverse Limited, 2018-2023 Chevrolet Traverse, 2017-2023 GMC Acadia, 2016-2019 Buick Cascada, 2016-2019 Chevrolet Cruze, and 2016-2019 Chevrolet Volt. This part number, 94821, is also referenced for select OE and aftermarket applications.

This part cross-references UAC HT2238C for the same application.

What It Helps Address

• Weak or inconsistent cabin heat
• Coolant leakage from a damaged heater core
• Restricted coolant flow through the HVAC system
• Fogging or moisture issues caused by heater core failure
• Loss of defrost performance in cold weather

Installation Notes

Verify inlet and outlet pipe diameter, core dimensions, and vehicle fitment before installation. This heater core is a specific-fit component, so matching the vehicle application is important for proper HVAC operation. Confirm compatibility for your Cadillac XT5, Chevrolet Traverse, or GMC Acadia before removing the existing unit.

Quality Assurance

Spectra Premium states that its engineering, manufacturing processes, and quality control are used to produce HVAC heater cores that meet or exceed original equipment performance expectations. Part number 94821 is built as an OE-style replacement for dependable HVAC service.