US Motor Works 13221 Series 7000 Frame Rail Fluid Cooler -6AN 17-1/2 in.

The US Motor Works 13221 is a Series 7000 Frame Rail Fluid Cooler engineered for versatile, high-efficiency thermal management in space-constrained installations. Its slim tube-and-fin design mounts directly to the frame rail, making it an ideal solution for auxiliary transmission cooling, power steering cooling, or fuel cooling applications.

Built with 1/2" copper tubing expanded into aluminum cooling fins, the cooler features embossed turbulators inside each tube that agitate fluid flow for maximum heat transfer efficiency. A 2-pass cooler design ensures fluid makes two full passes through the core before exiting, optimizing cooling performance even in compact configurations.

Key Features:

• Tube-and-fin construction with 1/2" copper tubing expanded into aluminum fins
• Embossed turbulators in each tube for maximum heat transfer
• 2-pass cooler design for enhanced thermal efficiency
• -6AN male inlet and outlet fittings
• Extruded plastic cooling fin guards protect the core
• Slim profile designed for frame rail mounting in limited-space applications
• Black powder coat finish for corrosion resistance
• Fluid capacity: 3.25 oz.
• Hardware kit included

Specifications:

• Overall Length: 17-1/2 in.
• Width: 2-5/8 in.
• Depth: 1-3/4 in.
• Core Length: 13-3/4 in.
• Mounting Length: 15-1/2 in.
• Inlet/Outlet: -6AN Male
• Construction: Aluminum / Copper
• Finish: Black Powder Coat

This universal frame rail cooler ships as a complete kit with mounting hardware, making installation straightforward in a wide range of automotive applications.