The Derale 51678 is a 16 row Series 10000 stack plate fluid cooler sold as a cooler only, without fittings or mounting hardware. It is furnace-brazed aluminum with a black powder coat finish and uses full 2 inch deep plates with internal turbulators to pull heat out of engine oil or transmission fluid. The -10AN O-ring female ports make it easy to plumb into an AN or hose system, and the cooler is rated at 32,000 BTU per hour.
Specifications:
- Cooler style: Series 10000 stack plate
- Rows: 16
- Construction: Furnace-brazed aluminum, black powder coat finish
- Plates: Full 2 inch deep with turbulators
- Port size: -10AN UNF O-ring female (7/8-14 thread)
- Cooling capacity: 32,000 BTU per hour
- Fluid capacity: 10 oz
- Width: 13 inches
- Height: 5-9/16 inches
- Depth: 2 inches
- Inlet dimension: 10 inches
- Mounting: 12-1/4 inch x 4-7/8 inch
- Part number: 51678
FAQ
What port size does the Derale 51678 use?
It has -10AN O-ring female ports with a 7/8-14 thread on both the inlet and outlet.
What is the 51678 cooler rated at?
It is rated at 32,000 BTU per hour and holds about 10 oz of fluid.
Does the 51678 come with fittings?
No, it is sold as a cooler only, so fittings and mounting hardware are purchased separately.
What is the 51678 made of?
It is furnace-brazed aluminum with a black powder coat finish and uses full 2 inch deep plates with turbulators.

