Product Name : EFI System Pumped Type
Product Description

EFI System Pumped Motorcycle Oxygen Sensor

Sustain optimal oxygen content referencing

EFI (Electronic Fuel Injection) System Pumped type meaning ECU (Electronic Control Unit) integrated pumped oxygen circuit by sending pumping voltage to oxygen sensor to withdraw oxygen from the exhaust gas to sensor's body as oxygen content referencing. By comparing between sensor inflow reference and exhaust gas' O2 content, oxygen partial pressure occurs, and Nernst Voltage generate. Then, ECU (Electronic Control Unit) reference the voltage data to determine the status for emission optimization.


Ceradex's system pumped technology enables our sensor to be fully sealed without water, pollutant, and oil intrusion concern. Meanwhile, achieve systematic oxygen pumping that allows higher detection accuracy.

Product Introduction
  • Miniature size and lightweight.  40% smaller than our PM1 type.  Provide great flexibility for EFI design!
  • System pumped and no need for reference air, for better sensor stability and accuracy
  • Complete water and oil proof
  • Monolithic ceramic element allowing faster operating time reach and shorter response time
  • Formulated element surface guarding against dew impact
  • Formulated protection layer filtering out harmful gas to the sensing catalyst
  • Premium stainless steel body protecting against extreme temperature and environment
  • Ultra small and lightweight M12 thread size and small body size enabled for small space motorcycle environment. Volatile for ODM and OEM use
  • Spiral single layer frontal tube protection to avoid exhaust gas direct hitting of ceramic element encased
  • Isolated circuitry body minimizing signal disruption
Available Type SY5
Sensor Element High Sensitivity ZrO2
Technology Planar
Circuitry Isolated Ground   
Frontal Tube Spiral Single Layer
Hex Nut M12
#Wires 4
Heating Heated
Fitting Direct Fit
Temperature Range -40°C ~ 1200°C
Operating Temperature >400°C
Pumping System pumping