Interstate-McBee M-3408345 Intake Air Temperature (IAT) Sensor – 98.5–02 5.9L Cummins

Restore accurate air charge readings with this OEM-style Interstate-McBee M-3408345 Intake Air Temperature (IAT) sensor. Built to OE specifications for the 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-valve (ISB), this direct-fit replacement helps maintain proper fueling, timing, and drivability.

• Direct-fit, OEM-equivalent: Matches Cummins 3408345 form, fit, and function.
• Accurate IAT feedback: Supports correct fueling and boost control for smooth performance.
• Durable construction: Quality materials and terminals for reliable, long-term operation.
• Aftermarket value: Interstate-McBee quality at a significant savings vs. OEM.

Specifications

Vehicle Fitment

Always verify by engine serial number (ESN) when possible.

• Dodge Ram 2500/3500 – 5.9L Cummins 24-Valve (ISB)
  • Model Years: 1998.5, 1999, 2000, 2001, 2002

Install Notes

• Located beneath the intake manifold on the left side of the cylinder head, near the MAP/boost sensor.
• Disconnect battery, unplug connector, remove sensor, lightly oil the O-ring (if equipped), and install hand-tight plus manufacturer torque.
• Clear any stored DTCs and verify IAT readings with a scan tool after installation.

Warranty

Interstate-McBee new engine parts are typically covered for 24 months from date of installation (no mileage/hour limit). Valve-train components may vary. Contact us to confirm coverage for this sensor.

Why Buy From CPP Diesel

• Expert B-Series fitment support (ESN verification available).
• Fast shipping and hassle-free returns.
• Diesel specialists with proven tech guidance.

FAQ