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Hayden Automotive

Hayden Rapid-Cool Transmission Oil Coolers

4.7 out of 5 stars 162 Customer Reviews

Hayden Rapid-Cool transmission oil coolers take the heat, so your vehicle won't! Over 14-million transmissions fail every year, and 9 out of 10 are from overheating. Rapid-Cool's unique plate and fin design combines cooling expertise and space efficiency; multiple sizes are available. Their patented internal turbulation provides better heat transfer. Lower your operating temps with a pioneer in cooling: Hayden!

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Hayden Rapid-Cool Transmission Oil Coolers 679

Hayden Rapid-Cool Transmission Oil Coolers 679

Hayden Rapid-Cool Transmission Oil Coolers 679

Transmission Oil Cooler, Plate, Natural, 11 in. x 11.625 in. x 0.75 in., 3/8 in. Inlet, Outlet, Each

Part Number: HDA-679

4.73 out of 5 stars ( 67 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Hayden Rapid-Cool Transmission Oil Coolers 677

Hayden Rapid-Cool Transmission Oil Coolers 677

Hayden Rapid-Cool Transmission Oil Coolers 677

Transmission Oil Cooler, Plate, Natural, 11 in. x 7.5 in. x 0.75 in., 3/8 in. Inlet, Outlet, Each

Part Number: HDA-677

4.61 out of 5 stars ( 23 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Hayden Rapid-Cool Transmission Oil Coolers 778

Hayden Rapid-Cool Transmission Oil Coolers 778

Hayden Rapid-Cool Transmission Oil Coolers 778

Fluid Cooler, Rapid-Cool, 9.25 in. Height x 13 in. Width x 1.7 in, Aluminum, Black, Each

Part Number: HDA-778

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Hayden Rapid-Cool Transmission Oil Coolers 678

Hayden Rapid-Cool Transmission Oil Coolers 678

Hayden Rapid-Cool Transmission Oil Coolers 678

Transmission Oil Cooler, Plate, Natural, 11 in. x 9.5 in. x 0.75 in., 3/8 in. Inlet, Outlet, Each

Part Number: HDA-678

4.71 out of 5 stars ( 21 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Hayden Rapid-Cool Transmission Oil Coolers 777

Hayden Rapid-Cool Transmission Oil Coolers 777

Hayden Rapid-Cool Transmission Oil Coolers 777

Fluid Coolers, Rapid-Cool, Transmission/Engine Oil Cooler, Aluminum, Black, Tube and Fin Design, 7/8 in.-14 Fittings, Each

Part Number: HDA-777

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

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