A-R98063-AI Insert Intake Valve (Std) Fits 670CH II 672A 672B 672CH GradersOne New Aftermarket Replacement Intake Valve Seat Insert Fits John Deere PowerTech Engines This aftermarket replacement intake valve seat insert fits the cylinder head of Fits John Deere 4045 (4. 5L) PowerTech diesel engines. The valve seat insert is pressed into the cylinder head and provides the precision sealing surface against which the intake valve closes, maintaining combustion chamber integrity and maximizing engine efficiency. Standard (STD)