All States Ag Parts Head Gasket Set David Brown 885 AD3/55 780 880 AD3/49 770 K964876 Case 380CK Fits Case Construction & Industrial(s) 380CK Fits David Brown Tractor(s) 770 (Selectamatic, s/n 582000-later), 780 (Selectamatic), 880 (Selectamatic, s/n 530000-later), 885 Fits David Brown Engine(s) AD3/49, AD3/55 Replaces David Brown OEM nos K964876 Contains all gaskets necessary to replace the cylinder head (valve seals not included)