AEM 15 PSIA / 1 Bar Stainless Sensor Kit – 1/8" NPT Male with -4AN & 3/16 Adapters

AEM’s stainless steel Absolute Pressure Sensors (PSIa) are engineered for accurate manifold pressure readings in high-performance applications. Offered in 15, 30, 50, 75, and 100 PSIa variants (1–7 BAR), these sensors are ideal for vehicles requiring precise vacuum and boost measurement referenced to absolute zero—making them a critical component for ECU calibration and data logging.

What Is PSIa?
Unlike gauge-style sensors (PSIg), PSIa sensors reference pressure from a total vacuum. At sea level, a PSIa sensor reads approximately 14.7 PSI when exposed to ambient atmospheric pressure. This absolute reference allows the sensor to measure both vacuum and positive pressure, making it the preferred choice for MAP sensors and forced induction monitoring.

Why Stainless Over Brass?
Accuracy is vital when tuning or feeding pressure data to your ECU. Brass sensors offer general reference, like for a boost gauge, but stainless steel sensors deliver the precision needed for calibration. Think of it like using a ruler vs a caliper—AEM stainless sensors are your go-to tool when every PSI counts.

Key Features

• Available in 15 / 30 / 50 / 75 / 100 PSIa configurations (1–7 BAR absolute)

• Stainless steel body with 360-degree welded wetted area for superior durability

• Accurate to within ±1% of full scale

• Impervious to automotive fluids, including fuel, oil, and coolant

• Includes sealed connector and pins

• Outputs clean, scalable analog data suitable for ECU input and data logging systems

Best Use Cases

• MAP sensor input for standalone and piggyback ECUs

• Precision vacuum and boost measurement in turbocharged or supercharged engines

• Ideal for motorsport, tuning, and high-performance street builds