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Heater Core

Your vehicle’s heater core is a critical component of its climate control system. When it’s in good working order, it’ll keep the cabin of your ride warm and comfy and...

Your vehicle’s heater core is a critical component of its climate control system. When it’s in good working order, it’ll keep the cabin of your ride warm and comfy and your windshield free of fog or frost. But when your heater core goes bad, you may experience little or no cabin heat, coolant leaking on your vehicle’s floor, or your windshield may fog up when you turn the defroster is on. The good news is, we’re here to help with a wide selection of stock replacement heater cores that will restore your vehicle’s climate control system to peak performance.

Resembling a small radiator, the heater core is located inside the...

Your vehicle’s heater core is a critical component of its climate control system. When it’s in good working order, it’ll keep the cabin of your ride warm and comfy and your windshield free of fog or frost. But when your heater core goes bad, you may experience little or no cabin heat, coolant leaking on your vehicle’s floor, or your windshield may fog up when you turn the defroster is on. The good news is, we’re here to help with a wide selection of stock replacement heater cores that will restore your vehicle’s climate control system to peak performance.

Resembling a small radiator, the heater core is located inside the HVAC plenum which is usually tucked behind the dashboard. Replacement cores are commonly manufactured from aluminum or a combination of brass and copper, and most feature OE inlet/outlet ports and factory mounting locations for a simplified installation.

Whatever you drive it’s a good bet we have a heater core that’ll bring the BTUs back to your ride’s heating system. You can shop OE-quality heater cores from trusted brands like Hayden Automotive, Mopar Replacement, ACDelco, Motorcraft, Crown Automotive, and many more.

Individual Parts

Results 1 - 25 of 461

Heater Core, Tube and Fin Coil, Replacement, For Use On 9 in. MM-A Series and MM-B Series Heaters, Each

Part Number: MAR-TA8000518

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Chevy, GMC, Truck, SUV, With A/C, Each

Part Number: RDR-9010079

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HVAC Heater Core

Part Number: UAC-HT398269C

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Chevy, Pontiac, With A/C, Each

Part Number: RDR-9010072

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Chevy, GMC, Truck, SUV, Without A/C, Each

Part Number: RDR-9010080

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HVAC Heater Core, HVAC HEATER CORE

Part Number: RDR-9010335

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HVAC Heater Core, HVAC HEATER CORE

Part Number: RDR-9010258

5.0 out of 5 stars ( 1 )

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Jeep, Wrangler, Cherokee, Each

Part Number: RDR-9010362

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Heater Cores, Aluminum, Natural, 0.625 in. Inlet, 0.750 in. Outlet, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, without AC, Each

Part Number: RDR-9010067

3.0 out of 5 stars ( 4 )

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Ford, Mercury, With A/C, Each

Part Number: RDR-9010130

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Buick, Chevy, Cadillac, Oldsmobile, Pontiac, With A/C, Each

Part Number: RDR-9010086

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Heater Cores, Matches OE Specifications, Aluminum, Natural, 5/8 in. Inlet/Outlet, 7.00 in. x 5.63 in. x 1.00 in., Mazda, L4, Each

Part Number: RDR-9010008

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Heater Cores, Aluminum, Natural, 0.625 in. Inlet, 0.750 in. Outlet, Chevrolet, Each

Part Number: RDR-9010060

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Heater Core, Stock Replacement, 5/8 in. Inlet, 3/4 in. Outlet, Aluminum, Chevy, GMC, Truck, SUV, Without A/C, Each

Part Number: RDR-9010065

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Heater Cores, Aluminum, Natural, 0.625 in. Inlet/Outlet, Ford, Mercury, Each

Part Number: RDR-9010046

4.0 out of 5 stars ( 1 )

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Heater Core, Stock Replacement, 3/4 in. Inlet, 5/8 in. Outlet, Aluminum, Buick, Chevy, Oldsmobile, Pontiac, With A/C, Each

Part Number: RDR-9010089

5.0 out of 5 stars ( 1 )

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HVAC Heater Core, HVAC HEATER CORE

Part Number: RDR-9010127

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

Heater Cores, Aluminum, Natural, 0.625 in. Inlet, 0.750 in. Outlet, Chevrolet, GMC, Oldsmobile, Each

Part Number: RDR-9010170

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Heater Core, Stock Replacement, 5/8 n. Inlet, 5/8 in. Outlet, Aluminum, Ford, Truck, With A/C and Standard Output Heater, Each

Part Number: RDR-9010045

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HVAC Heater Core, HVAC HEATER CORE

Part Number: RDR-9010058

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Heater Cores, Aluminum, Natural, 0.625 in. Inlet, 0.750 in. Outlet, Chevrolet, V8, Each

Part Number: RDR-9010136

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

HVAC Heater Core

Part Number: UAC-HT394185C

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

HVAC Heater Core, HVAC HEATER CORE

Part Number: RDR-9010090

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

Heater Cores, Aluminum, Natural, 0.625 in. Inlet/Outlet, Jeep, 4.0L, 4.7L, Each

Part Number: RDR-9010384

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

Heater Core, Stock Replacement, 5/8 in. Inlet, 5/8 in. Outlet, Aluminum, Jeep, Wrangler, Each

Part Number: RDR-9010518

Not Yet Reviewed

Estimated Ship Date: Dec 23, 2025 if ordered today

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Estimated Ship Date: Dec 23, 2025 if ordered today

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