Description
The 4954245 pressure sensor is a genuine Cummins OEM component engineered to accurately monitor fuel rail (or oil) pressure in heavy-duty diesel engines—especially the 8.9 L ISX and QSX series used in EPA13-certified applications It attaches via a standard M12×1.5 thread and features a secure 3-pin triangular connector, providing analog voltage feedback proportional to system pressure
Built for harsh operational environments, this sensor offers durable construction, precise measurement within ±1%, and pressure-range compatibility that supports optimal fuel injection timing, engine efficiency, and emissions control in ISX/QSX engines . Available as genuine Cummins or premium aftermarket units (e.g., PAI Industries kits with 2-year warranty), the sensor is widely adopted in OEM and service replacement programs
📊 Key Specifications
| Feature | Details |
|---|---|
| Part Number | 4954245 (also cross-referenced with 1760323, 5PP5-3, 71647971) |
| Sensor Type | Fuel rail / oil pressure sensor |
| Thread | M12×1.5 |
| Connector | 3-pin triangular |
| Length | ~7.22″ (183 mm) overall when including housing |
| Accuracy | ±1% typical |
| Applications | Cummins ISX/QSX 8.9 L series; also fits heavy-duty trucks (Freightliner, Mack, Kenworth, Peterbilt, Volvo, Western Star) |
| Aftermarket Option | PAI 050627 kit, includes M12 thread, 3-pin connector, 2-year unlimited-mileage warranty |
| Construction | Heavy-duty metal housing, designed for vibration, heat, and harsh conditions |
⚙️ Why It Matters
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Precise Fuel Control: Enables accurate fuel pressure readings for proper injection timing and engine management.
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Durability and Reliability: Built to withstand demanding diesel engine environments.
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Compatibility: OEM Cummins and top-tier aftermarket options ensure OEM fit and performance.
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Performance & Emissions: Helps maintain fuel efficiency and reduce emissions by providing stable pressure feedback.
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