Choose options
AEM's Absolute Pressure Sensors (PSIa) deliver precision manifold pressure readings across a wide range of applications, offering exceptional accuracy and reliability for both street and motorsport use. Available in 15 PSIa (1 BAR), 30 PSIa (2 BAR), 50 PSIa (3.5 BAR), 75 PSIa (5 BAR), and 100 PSIa (7 BAR), these sensors are ideal for setups requiring precise vacuum and boost measurements referenced to absolute zero.
Why Choose AEM PSIa Sensors?
Unlike gauge pressure sensors, PSIa sensors are referenced to a true vacuum. This makes them the preferred choice for data-critical roles such as ECU calibration, manifold pressure logging, and advanced tuning tasks. Stainless steel construction and a sealed, fluid-resistant design make these sensors highly durable even in harsh engine bay environments.
Key Features
-
Available in 15 / 30 / 50 / 75 / 100 PSIa variants (1–7 BAR absolute pressure)
-
Stainless steel body for enhanced durability and chemical resistance
-
Accurate within a 1% margin of error for reliable data capture
-
Includes 1/8" NPT to -4 AN adapter and barbed hose fitting
-
Weather-resistant connector and terminals included
Application Notes
-
Use PSIa sensors when vacuum measurement is required
-
Suitable for MAP sensor inputs, data logging, and ECU tuning
-
Ideal for forced induction and naturally aspirated engines alike
-
Not to be confused with gauge pressure sensors (PSIg), which do not read vacuum
Upgrade from Brass to Stainless
For reference-only tasks like boost gauge readouts, brass sensors are adequate. But for critical ECU input or tuning where accuracy matters, AEM’s stainless steel sensors offer the precision you need.
No instructions available for this product.

Need Help Finding the Right Part?
We’ll Track It Down for You
We know how frustrating it can be searching for the right part. If it’s not listed on our site, that doesn’t mean we can’t source it.
Fill out the quick form below and our team will track it down for you.