Hydra-COOL® Transmission Oil Cooler (23-Plate)

The Hydra-Cool^® DC678 is a highly effective and economical solution designed to keep your transmission at its optimum operating temperature. Its advanced 23-plate and fin design is engineered for maximum cooling performance while requiring 33% less mounting space than traditional coolers.

Equipped with high-efficiency internal turbulators in each tube, this unit ensures maximum heat transfer from the fluid to the core. Delivering 33% more performance than comparable tube and fin designs, it is a professional-grade choice for vehicles where mounting space is a priority.

Core Technical Features

• High Efficiency: 33% more cooling performance in a 33% smaller package.
• Push-On Fittings: Standard 3/8” (9mm) fittings for a quick and simple installation.
• Internal Turbulation: Specialized tube design ensures maximum fluid-to-core heat transfer.
• Pressure Tested: 100% tested at 150psi for guaranteed reliability and durability.
• Installation Ready: Features pre-drilled mounting plates for secure fitment.

Kit Includes

• 1x Hydra-Cool® 23-Plate Transmission Oil Cooler
• 1x 3/8” Hose (1.4 meters)
• 4x Hose Clamps
• 2x Quick Fit Kits (Nylon Ties x4)
• 1x Detailed Installation Instructions