Denso 079800-3301 Manifold Absolute Pressure Sensor

The Denso 079800-3301 is a manifold absolute pressure sensor designed to measure intake manifold pressure and provide a voltage signal proportional to pressure changes to the engine control unit (ECU). It utilizes a silicon piezoresistive sensing element housed in a compact plastic body with a 3-terminal female plug-in connector. The sensor operates on a 5V reference voltage and outputs an analog signal typically ranging from 0.5V to 4.5V across the operating pressure range. This unit serves as a direct replacement for Mazda OEM part numbers KJ01-18-211A, KJ0118211A, RF4F-18-211, and ZJ20-18-211. It interchanges with Standard Motor Products AS147. Verified applications include the 2004-2005 Mazda Miata Mazdaspeed with 1.8L DOHC turbocharged engine (BP-ZE), 2004-2005 Mazda 6 with 2.0L turbo diesel engine (RF-CY), and 1995-2002 Mazda Millenia models. Engineered for durability in harsh under-hood environments, the sensor withstands vibration, thermal cycling, and exposure to fuel vapors. The 3-pin configuration includes power supply, ground, and signal output terminals. It is calibrated for absolute pressure measurement suitable for both naturally aspirated and forced induction applications up to approximately 250 kPa absolute.