A circular disk covered in rubber or plastic with a hole in the center where the edge is sometimes tensioned by a spring that prevents fluid from leaking at the Mass Air Flow Sensor. Engine Air Intake Hose Adapter.
Engine Air Intake Hose AdapterMass Air Flow Sensor Seal
Fits Express 1500, Express 2500, Express 3500, GTO, P30 , Savana 1500, Savana 2500, Savana 3500
1/2, 3/4 & 1 Ton, 1996 New Style, 5.7 LITER, 8 CYLINDER. 4.3 LITER, 6 CYLINDER. 5.0 LITER, 8 CYLINDER. 5.7 LITER, 8 CYLINDER. 7.4 LITER 8 CYLINDER, GAS.