1981 CHEVROLET K20 Radiators

Radiator, Performance Fit, 4-Row, Aluminum, Polished, Chevy, GMC, Truck, Each

Part Number: SUM-384030

3.21 out of 5 stars ( 24 )

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Radiator, Performance Fit, 2-Row, Aluminum, Polished, Chevy, GMC, Each

Part Number: SUM-384048

4.08 out of 5 stars ( 13 )

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Radiator, LS Swap, Crossflow, Dual-Row, Aluminum, Natural, Transmission Cooler, 33.25 in. Wide, 18.62 in. High, 3.00 in. Thick, Chevy, GMC, Each

Part Number: SUM-381440

5.0 out of 5 stars ( 2 )

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Radiator, Performance Fit, 3-Row, Aluminum, Polished, Chevy, GMC, Truck, Each

Part Number: SUM-384029

4.21 out of 5 stars ( 19 )

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Radiator Support, Reproduction, Fits Models with Dual Headlights Only, Steel, EDP Coated, Chevy, GMC, Each

Part Number: AMD-350-4081-2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Oversize $44.99

Radiator, Aluminum, Natural, 3-Row, Chevy, Pontiac, GMC, Buick, Oldsmobile, Each

Part Number: FLD-RGM-3R3319-A

5.0 out of 5 stars ( 1 )

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Radiator, Performance, Aluminum, Polished, Downflow, 2 Row, with Transmission Cooler, 1.5 in. Lower Outlet, Chevrolet, GMC, Each

Part Number: RAD-GMT556A21-1

Not Yet Reviewed

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Radiator, Aluminum, Natural, 3-Row, LS Swap, Chevy, GMC, Truck, Each

Part Number: SUM-384078

3.67 out of 5 stars ( 3 )

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Radiator, Crossflow, Dual-Row, Automatic Transmission, Aluminum, Natural, 28.00 in. Wide, 19 in. High, 3.0 in. Thick, Each

Part Number: GRI-8-70013

2.5 out of 5 stars ( 14 )

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Radiator, Dominator Series, Crossflow, Aluminum, Natural, Chevy, GMC, Manual, GM LS Series Engine Swap, Each

Part Number: GRI-8-00013-LS

2.92 out of 5 stars ( 25 )

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Radiator, Aluminum, Natural, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: FLD-RGM-3R3319-M

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Radiator, Performance, Aluminum, Polished, Crossflow, 2 Row, Transmission Cooler, Chevy, GMC, Truck, Each

Part Number: RAD-GMT556A

3.4 out of 5 stars ( 5 )

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Radiator, Crossflow, Dual-Row, Manual Transmission, Aluminum, Natural, 28.00 in. Wide, 18.62 in. High, 3.0 in. Thick, Each

Part Number: GRI-8-00013

2.36 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Radiator, Exact Fit, Models w/Heavy Duty Cooling Only, Aluminum, Plastic, Chevy, GMC, 350, 400, 454, Each

Part Number: SGT-CU730

4.23 out of 5 stars ( 30 )

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Radiator, RADIATOR

Part Number: RDR-8010730

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Radiator, Aluminum, 2-Row, Polished, Crossflow, Chevy, GMC, Each

Part Number: FBR-FB165

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Radiator, Performance, Aluminum, Black, Crossflow, 2 Row, Transmission cooler, Chevy, GMC, Each

Part Number: RAD-GMT556A21B

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Radiator Support, Steel, EDP Coated, Chevy, Each

Part Number: AMD-350-4081-1

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• Oversize $44.99

Radiator, Aluminum, Natural, 3-Row, LS Swap, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: FLD-RGM-3R3319LS

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Estimated Ship Date: Mar 12, 2026 if ordered today

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Radiator, X-Line, Crossflow Style, Three-row, Aluminum, Natural, Chevy, GMC, Automatic, Each

Part Number: MIO-MMRAD-CK-78X

4.05 out of 5 stars ( 19 )

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Radiators, Crossflow, 4-row, Aluminum, Natural, Upper Left Side Inlet, Transmission Cooler, Chevrolet, GMC, Each

Part Number: HCT-ALR87C4

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Estimated Ship Date: Feb 24, 2026 if ordered today

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Radiator, Aluminum, Natural, Automatic, Chevy, GMC, Each

Part Number: FLD-RGM-3R3320-A

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Radiator, Aluminum, Natural, Manual, Chevy, GMC, Each

Part Number: FLD-RGM-3R-3320M

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Estimated Ship Date: Mar 12, 2026 if ordered today

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Radiator, Crossflow, Aluminum/Plastic, Natural, Chevy, GMC, Each

Part Number: OSC-729

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Estimated Ship Date: Jan 22, 2026 if ordered today

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