2015-2019 Powerstroke 6.7L Mahle Upper Gasket Set (HS54886A) 2011 - 2016 GM Transmissions & Drivetrains will improve fuel economy and

will improve fuel economy and increase power by 50-70 RWHP over Stock

Whether you're pushing your Duramax engine in drag racing

Gator Fastener's chrome plated exhaust manifold studs are 12

they drastically reduce deflection at high cylinder pressures and keep valve timing precisely in sync under load

Now simply remove

2015-2019 Powerstroke 6.7L Mahle Upper Gasket Set (HS54886A) 2011 - 2016 GM Transmissions & Drivetrains will improve fuel economy and2015 2019 Powerstroke 6. 7L Mahle Upper Gasket Set (HS54886A) The Mahle Upper Engine Gasket Set includes all the seals and gaskets for the Top end of your 6. 7L Powerstroke. Mahle Gaskets meet or exceed OE specifications and are built to fit exactly like the originals with superior materials.