Description CSF 8374 Motorsport Dual-Pass Radiator with Shroud + 14" SPAL Brushless Fans and Harnesses The new Motorsport Dual-Pass Radiator is the largest and most efficient cooler CSF has produced. It features a mammoth 705mm x 448mm (27×75” x 17.5”) core that is 68mm thick. The 68mm core is 24% thicker than the nearest competitor which uses a 55mm core. This means more heat transfer and thermal capacity than any other radiator on the market. CSF’s Exclusive B-Tube Technology increases the heat transfer by approximately 15% over regular oval welded tubes. The 44 rows of 8mm super-efficient multi-louvered fins maximize airflow through the core for the best possible performance. From the performance perspective; a dual pass core offers a great balance between optimal cooling and back pressure. By extending the coolant flow path, coolant stays in the radiator longer allowing for additional heat dissipation. While a triple pass may offer even more benefits in this regard, it also creates more resistance and in turn pressure drop. Depending on your setup, this might not be an ideal design. The dual pass design offers a nice balance between ultimate cooling performance and coolant pressure regulation. The other benefit of the dual pass design is it places both fittings on one side of the radiator. This configuration is much easier for setting up a remote or rear mounted radiator. Builders can run the inlet and outline lines together for simpler fabrication and overall shorter coolant lines. The fans can also be clocked in 4 different positions to make wire routing easier. To offer customers more versatility, CSF went with -20AN ORB ports that can be used with either -20AN or -16AN Fittings. Larger -20AN fittings and lines offer both a higher burst pressure limit and greater flow rate. The inlet/outlet tank also features two pre-plugged 12AN (1-1/16″-12) ORB ports. These two ports can be used to mount sensors, aid in bleeding the coolant system, connecting an expansion tank, and more. Each port/bung is located above/below the inlet and outlet fittings. CSF designed the Motorsport Radiator to give fabricators and builders a wide variety of mounting options. Because this radiator will be mounted in different positions and orientations depending on the application, the engineers wanted to make sure there were mounting bosses for any type of setup. Each tank is equipped with four M8x1.25 mounting bosses. One on the top and bottom of each tank, and two on the sides. This allows for bolt-on mounting for any type of structural frame or cradle no matter how or where the radiator will be mounted. SPAL Brushless Fans (CSF #8374). The shroud is made of TIG welded laser cut aluminum that bolts to either side of the radiator. The fans are 14 inch (355mm) SPAL ABL505P 12V Brushless Puller Fans (SPAL 30107102). Each fan is capable of moving 2395 CFM (4060 m3/h) of air for a combined total of 4790 CFM (8120 m3/h). The shroud and fan module was designed with drifting in particular in mind. Due to the lack of airflow from racing sideways, there is a huge burden on the cooling system. These fans combined with a precision made shroud offer ample airflow for the radiator in the most adverse conditions and situations. This module is also well suited for high power rock crawlers that see minimal airflow as well as trophy trucks that deal with a lot of clogging from sand. Most aftermarket fan kits don’t include the jumper harnesses (pig tails) and rely on the customer to source their own or rewire in the factory connectors. While this works when replacing factory cooling fans, custom race setups can’t always rely on this method. Especially when the radiator will not be mounted in the factory location. CSF includes the jumper harnesses (SPAL SBL-YAZ-PT10) with the #8374 to make the wiring process as easy as possible. These harnesses include the plug and play connectors that match the SPAL Fan (PN: 30107102) connectors. The large gauge wiring allows for sufficient power to be run to the fans and simplifies the fabrication and setup process. This kind of detail is often overlooked by manufacturers but CSF went the extra mile to make the installation process as easy as possible. - 100% All Aluminum TIG-Welded Construction - 2-Row – 68mm Ultra-High-Performance Dual Pass Core: 705 mm L x 448 mm H (27.75 x 17.5 inches) - 45 Rows of 8mm Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact - 44 Rows of Cooling Tubes with CSF’s Exclusive B-Tube Technology - Inlet/Outlet: -20AN (1 5/8″ – 12) Threaded female ORB bosses *Fittings NOT Included - 8 total M8x1.25 Mounting Bosses (4 per tank) for mounting versatility - 2 -12AN (1 1/16″-12) ORB ports for sensor mounting, overflow or expansion tank mounting, and/or bleeding *Fittings NOT Included – only plugs - Removable Fan Shroud – Can Be Mounted on Either Side of the Core with included hardware - Dual 14″ 500W SPAL Brushless Fans – Total of 4790 CFM (SPAL 30107102) - Includes Two Jumper Harnesses for the SPAL Fans (SPAL SBL-YAZ-PT10) - Hand Brushed Satin Finish - Individually Leak and Pressure Tested - 2-Year Limited Warranty