Water Neck Swivel 45 Degree Angle Black Fits 2003-Up Mopar Gen III Hemi Engines 45 Degree HolleyThese water necks fit Mopar Gen Iii Hemi engines, and are ideal for use in engine swaps since the swivel allows adjustment to accommodate custom radiator hoses. The billet aluminum with black anodized finish looks great and prevents corrosion. Choose from outlets with a 45 degree or 90 degree angle (both swivel 360 degrees before bolts are tightened up). Features and Benefits: Aluminum Swivel Water Necks for Gen Iii Hemi Engines Fits All 2003 & Up 5.