Caterpillar
Diaphragm for Caterpillar MT09-03
This flexible diaphragm, part number 91H2014470, serves as a pressure-sensitive membrane for regulating fluid or gas flow in Caterpillar MT09-03, MT12-03, MT15-03, MT16-03, and MT17-03 engines.
Specifications
- Part number
- 91H2014470
- Brand
- Caterpillar
The component 91H2014470 is a flexible diaphragm designed to function as a pressure-sensitive membrane within the control systems of Caterpillar engines. It operates by separating chambers of fluids or gases or by transmitting mechanical movement to a control mechanism. This action is necessary for the precise regulation of pressure and flow within fuel, air, or vacuum systems. By responding to pressure differentials, it ensures that the engine management systems maintain the correct operating parameters for efficient combustion and overall performance.
This diaphragm is compatible with a range of Caterpillar engine models including the MT09-03, MT12-03, MT15-03, MT16-03, MT17-03, MT18-03, and MT19-03. These engines are utilized across various heavy machinery applications including construction and industrial equipment. The component is engineered to meet the specific elastic and chemical resistance requirements of these engine systems, ensuring it maintains its sealing properties when exposed to the operating environment of the engine.
In general engine engineering, diaphragms are used to translate pressure changes into mechanical movement or to act as a seal between different media. They are commonly found in fuel pumps, regulators, and air control valves where they facilitate the modulation of system flow based on varying pressure inputs.

