MRC4025341-13B Cummins 5.9L B Series Aftercooler Service Kit (B) O-ring Kit MRC4025341-13B

O-Ring Service Kit

Cummins 5.9L BTA Aftercooler Service Kit (A) O-ring kit

Used on Aftercooler Assembly - 3979771 / 5566841

Non OEM Mr Cool Replacement product P/N MRC4025341-13B

Kit includes

4 x O-rings (only 2 needed. 2 different thicknesses provided)

1 x Gasket

1 x METALUBE / Brush

This is a Mr Cool (USA) Replacement Part MRC4025341-13B.