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Dummy O2 Sensor Guide: How to Choose & Use Safely
Jan 28, 2026 · A downstream O2 sensor simulator mimics post-cat oxygen levels to prevent ECU fault codes There are two main types: passive spacers (sometimes called "O2 spacers") and active …
Regal 3860 Commodore 38 powered by Mercruiser 8.1L MPI 425HP ...
This Heated O2 Sensor Simulator ONLY FITS boats fitted with 1 UP TO 4-WIRE NARROWBAND ZIRCONIA Oxygen Sensor, functioning in 0…1.0-volt fluctuating voltage range. It WILL NOT FIT 5- …