Seller notes

Here we have a in house design for all 4BT and 6BT Cummins 3.9 and 5.9 Diesel owners. You've asked and we listened!!!! These intake flanges are CNC laser cut NOT stamped out of USA made 1/4" thick CR Mild Steel This flange is intended for use with or without the stock heater grid deleted and a custom fabricated intake horn or any after market intake horn as well. It comes with a standard 3.005 hole for use with any of our custom cover plates. We now offer these flanges in 1/4" - 3/8" and 1/2" Bi...

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