Description
The 1840078C1 sensor is an OEM-grade pressure sensor produced by Navistar International (formerly Detroit‑Navistar). It monitors pressure in intake and exhaust systems—commonly used as a MAP or exhaust back-pressure sensor in diesel engines such as Navistar DT466, Ford Powerstroke 6.0 L & 7.3 L, and other heavy-duty applications
Equipped with a 3-pin circular connector and built with durable plastic and brass construction, it features a threaded port (typically 1/8″–27 NPT) for secure mounting The sensor outputs a proportional voltage signal corresponding to the measured pressure, which is vital for engine control modules to optimize performance, emissions, and turbocharger wastegate operation
Known aftermarket versions include brands like PAI and Interstate-McBee, offering reliable direct replacements with warranties and quality testing Its robust design ensures resistance to vibration, heat, and harsh under-hood environments.
Key Specifications
| Feature | Details |
|---|---|
| Part Number | 1840078C1 (cross‑refs: 1813658C2, 1C3Z‑9J460‑AA) |
| Sensor Type | MAP / exhaust back‑pressure |
| Connector | 3-pin circular |
| Thread Size | ~1/8″–27 NPT |
| Housing Materials | Plastic + brass |
| Engine Compatibility | Navistar DT466, Ford 6.0 L & 7.3 L Powerstroke, Ford diesel trucks (1997–2004) |
| Electrical Output | Analog voltage proportional to pressure |
| Durability | Built to withstand vibration, temperature extremes, dust, and moisture |
| Aftermarket Options | Available via PAI, Interstate‑McBee, HeavyDutyPros, etc. with warranties |
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