13-18 Cummins 4'' Exhaust c_tune_files Largest and least restrictive filter

Largest and least restrictive filter in its class

Easy install

Any aftermarket modifications can be communicated for further tuning customization

7L Powerstroke

Cleanable and reusable

13-18 Cummins 4'' Exhaust c_tune_files Largest and least restrictive filter2013 2018 Cummins 6. 7L 4" Polar Exhaust Polar Diesel exhaust kits are designed to concur the elements, made from T409 Stainless Steel, our kits provide the quality your truck deserves. Our exhaust systems are designed with a hassle free, easy installation in mind! Featuring precise pre bent exhaust hangers, stainless lap joint clamps and precise flanges, you can expect excellent fit & finish. With all of our exhaust systems you can count on reduced