This facilitates the assembly process and eliminates the possibility of rupturing the diaphragm due to improper installation of these valves. This is probably because of modern fuel additives & the introduction of ethanol into fuel.
Diaphragm for a 6 (5) cylinder Alloy Bosch KE-Jetronic Fuel Distributor
Corvette Bendix Brake Booster 9" Dual Diaphragm 1 1/8" Bore GM Master Disc Disc
804533 Fuel Rail Diaphragm For Mercury Optimax Fuel Rail Air Tracker Diaphragm
Aeromotive Fuel Pump Diaphragm 11001; Replacement Diaphragm for 11202 (A2000)
HOLLEY ACCELERATOR PUMP RUBBER DIAPHRAGM - 30CC A Pair two HOLLEY # 135-5
Solex Carburetor Diaphragm FOR Willys Jeep CJ2 CJ MBW
