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Heater Hookup Ports for Your B & C Series Cummins

Cummins 330/370 5.9 Manifold Output
Cummins 330/370 5.9 Manifold Output

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6CTA 8.3-"450 Diamond" Outlet
6CTA 8.3-“450 Diamond” Outlet
6CTA 8.3-"450 Diamond" Inlet
6CTA 8.3-“450 Diamond” Inlet
Typical 'T' and mini-valve. They work great for heater outlets and inlets
Typical ‘T’ and mini-valve. They work great for heater outlets and inlets
These mini valves are small, simple & reliable. Plus they come as a male by female pipethread which eliminates an extra fitting.
These mini valves are small, simple & reliable.
Plus they come as a male by female pipethread which eliminates an extra fitting.
Cummins 330/370 5.9-inlet or return to engine
Cummins 330/370 5.9-inlet or return to engine

Above C series coolant return lines. 

Tee into either of these with a standard Brass Pipe Tee. The larger lower line will yield a higher flow.