The Griffin Large Dual-Pass Fluid Cooler with 12" SPAL Fan is engineered for high-horsepower vehicles and severe-duty applications where fluid temperature control is critical. Built with a heavy-duty extruded aluminum tube-and-fin core, the dual-pass design increases fluid dwell time inside the cooler to maximize heat rejection for transmission fluid, engine oil, differential fluid, and power steering systems. An integrated aluminum shroud and high-output 12" SPAL electric fan provide exceptional airflow across the entire cooling surface, maintaining consistent fluid temperatures during slow-speed rock crawling, endurance racing, Ultra4 competition, desert racing, towing, and other high-load conditions where natural airflow is limited. Two 1/2" NPT female ports allow either side to be used as the inlet or outlet, making this cooler easy to integrate into custom plumbing layouts. Includes: (1) Griffin Dual-Pass Extruded Aluminum Fluid Cooler (1) Integrated Aluminum Fan Shroud (1) 12" SPAL Electric Fan Mounting Brackets Note: Hose fittings, adapters, wiring, relays, thermostatic switches, and fluid plumbing components are sold separately. Specifications Specification Details Manufacturer Griffin Product Type Dual-Pass Fluid Cooler with Electric Fan Material Aluminum Finish Natural Aluminum Cooler Style Crossflow Core Design Dual Pass, Single Row Tube Size 1.75" Extruded Tube Core Thickness 1.75" Overall Width (with Brackets) 19.75" Overall Height 13.00" Overall Thickness (with Fan) 6.50" Core Width 13.75" Core Height 12.82" Inlet Port 1/2" NPT Female Outlet Port 1/2" NPT Female Port Configuration Either Port May Be Used as Inlet or Outlet Fan Diameter 12" Maximum Airflow 1,636 CFM Fan Blade Material Plastic Fan Blade Color Black Shroud Material Aluminum Shroud Finish Natural Aluminum Fitment Compatible Fluid Systems: Automatic transmission fluid Engine oil Power steering fluid Differential and gear oil Hydraulic fluid systems Common Applications: LS engine swaps TH400 transmissions Powerglide transmissions 4L80E transmissions 700R4 transmissions Hydro-assist steering systems Full hydraulic steering systems Ultra4 race vehicles Rock bouncers Rock crawlers Desert race vehicles High-horsepower off-road builds Heavy-duty towing applications Fitment Notes: Universal fitment for custom fluid cooling systems. Verify available mounting clearance before installation. Select fittings and hose sizes appropriate for your fluid type and operating pressure. Mount the cooler where the fan has unrestricted airflow. Keep hoses away from suspension travel, exhaust heat, and rotating driveline components. For lighter-duty trail rigs or moderate power levels, the Griffin Small Race Cooler may provide sufficient cooling capacity. FAQ Why choose a larger fluid cooler? Higher horsepower, larger tires, heavier vehicles, and extended low-speed operation generate significantly more heat than standard cooling systems can dissipate. A larger cooler increases both fluid capacity and cooling surface area, helping maintain safe operating temperatures under sustained load. Why use a dual-pass core? The dual-pass design forces fluid to travel through the cooler twice before exiting, increasing dwell time and improving heat transfer compared to similarly sized single-pass coolers. Why is the SPAL fan important? During rock crawling, staging, towing, or technical trail driving, vehicle speed often isn't high enough to move sufficient air through the cooler. The 12" high-output SPAL fan provides up to 1,636 CFM of airflow to maintain consistent cooling regardless of vehicle speed. What fluids can this cooler be used with? This cooler is commonly used for automatic transmission fluid, engine oil, differential fluid, power steering fluid, and other hydraulic systems when installed with compatible fittings, hoses, and pressure ratings. How should the cooler be mounted? Mount the cooler where the fan can pull or push unrestricted airflow across the core while protecting it from rocks, debris, and excessive exhaust heat. Proper airflow around both sides of the cooler is essential for maximum cooling performance. When is this cooler recommended over the smaller Griffin cooler? This larger Griffin cooler is recommended for Ultra4 race cars, rock bouncers, desert race vehicles, high-horsepower LS swaps, heavy towing applications, and any vehicle that experiences sustained high fluid temperatures. The additional cooling capacity helps maintain consistent performance under the most demanding operating conditions.
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