Product Description
The Bendix 11909 Hydraulic Brake Master Cylinder is a heavy-duty master cylinder designed for older medium-duty commercial vehicles equipped with hydraulic braking systems.
The 11909 features a 1.75-inch bore and converts brake pedal and booster force into hydraulic pressure for dependable service-brake operation. Bendix hydraulic-brake literature associates the 11909 family with commercial brake systems using Bendix Hy-Power and related power-assist equipment.
The original 11909X / OE 2236173 configuration is identified with a 3/4"-18 primary port, a 50 cubic-inch reservoir, and an internal residual check valve. Current replacement master cylinders such as Raybestos MC39462 and Dorman M39462 cross directly to Bendix 11909; those replacements commonly use 3/4"-18 and 11/16"-18 outlet connections, so the actual port configuration on the existing cylinder should be checked before ordering. Scribd
Part Number: 11909
Reman Reference: 11909X
Brand: Bendix
Product Type: Hydraulic Brake Master Cylinder
Bore: 1.75 in. / 44.45 mm
OE Piece Number: 2236173
Reservoir Capacity: 50 cu. in.
Primary Port: 3/4"-18
Residual Check Valve: Yes on original 11909X specification
Common Cross References: MC39462, M39462, 130.79016, E7806, MC119401, F119401, E2HZ2140B.