Air Restriction Indicator 178957
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178957 Cummins Air Restriction Indicator
- Function : Monitors air intake flow resistance and visualizes/signals when the air filter needs cleaning or replacement to ensure optimal air-to-fuel ratios.
- Engine Compatibility : Commonly used on non-certified 5.9L B-Series engines (4BT / 6BT), ISB / QSB, as well as legacy and heavy-duty series like NH220, NH250, and NTA855.
- Replaces / Supersedes : Replaces older Cummins part numbers such as 650816.
- Application : Used across commercial trucks, industrial power generators, agricultural equipment, and marine installations running Cummins engines.
The Cummins air restriction indicator (Part #178957) is a diagnostic monitoring component designed to measure vacuum pressure within a diesel engine’s air intake system. It alerts operators or service technicians when the air filter becomes clogged or restricted, helping prevent engine performance degradation, excessive fuel consumption, and potential air intake system damage.
- Product reference
- Air
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