FITMENT
-
2011-2023 Ford F-250, F-350, F-450, F-550 6.7L Powerstroke Diesel engine.
Interchange Part Numbers:
-
BC3Z-12B591-B, BC3Z-12B591-C
DESCRIPTION
Product Overview
- The BC3Z-12B591-B EGT Sensor features one of the longest production spans in the Powerstroke platform—covering 2011 through 2023 model years across multiple ECU generations and emissions updates. Designed as a direct OEM replacement for Ford interchange numbers BC3Z-12B591-B and BC3Z-12B591-C, it maintains precise thermal mapping throughout Ford’s platform refreshes.
- Calibrated to deliver exact voltage-to-temperature signals regardless of your truck's PCM software version, this TruckTok sensor provides accurate real-time data to prevent DPF regeneration failures, eliminate check engine lights, and keep your 6.7L Powerstroke out of limp mode with a simple plug-and-play installation.
Key Features
- The internal thermocouple is encased in a high-temp damping compound to prevent micro-fractures, eliminating the intermittent signal dropouts common in economy sensors.
- Strict probe length tolerances guarantee exact thermal tip placement in the exhaust stream, preventing temperature lag and active regen mismanagement.
- Built with a high-grade stainless steel probe rated for continuous 1,200°F+ operation to withstand extreme heat cycling and thermal shock.
- Features an OE-identical positive-lock housing with an integrated silicone gasket that resists road salt, underbody moisture, and connector corrosion.
FAQ
Q: Why is this sensor more expensive than the AC3Z or HC3Z?
A: The BC3Z sensor must maintain precise thermal accuracy across two distinct ECU generations (2011–2016 and 2017–2023), requiring tighter thermocouple tolerances. Covering over a decade of 6.7L Powerstroke production, this part number reflects ongoing Ford engineering refinements for a position that serves the broadest range of trucks.
Q: My truck is a 2011 but the dealer sold me a BC3Z. Is that the right part for an early 6.7L?
A: Yes. Ford introduced the BC3Z as a running update during 2011 production, superseding earlier part numbers for this position. It became the factory-designated replacement across all 2011–2023 6.7L Powerstroke trucks. If your original sensor or dealer reference uses the BC3Z prefix, this is the exact match.
Q: Can a failing BC3Z sensor cause intermittent limp mode that clears after a restart?
A: Yes—this is a classic failure mode. Thermal stress can cause micro-fractures in the internal thermocouple. The sensor reads correctly when cold, but loses connection as exhaust temperatures rise, triggering Limp Mode. Once the engine cools after a shutdown, the circuit temporarily reconnects. If you experience self-clearing or intermittent EGT codes, the sensor is nearing total failure.
Q: Is there a break-in period for a new EGT sensor?
A: No. Thermocouples generate voltage instantaneously based on temperature. Once installed and old codes are cleared, the ECU will read accurate live data on the very first key cycle. If a new sensor shows erratic readings immediately, verify that the weather-sealed connector is fully seated and locked before assuming a component issue.
Q: Looking for a different EGT position on your 6.7L?
A: Your 6.7L Powerstroke has multiple EGT positions. We carry the AC3Z5J213C (2011–2016), FC3Z-12B591-A (2015–2025), and HC3Z-5J213-B (2017–2022). Match the part number on your old sensor to grab the right one.
