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ULTRA-POWER 2344059  
$28.79
Price
$0.00
Core
$28.79
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Features & Benefits:
  • Dual Insulated Protective Cover Prevents premature sensor wear
  • Laser welded sensor body to keep out contaminants
  • Heavy duty heater contacts (on three or four wire heated models)
  • Internal Ceramic Insulation for optimal sensor performance
  • Sealed wire leads prevent moisture interference with electronic signal
Engine Bank Identification

An OBD Scan Tool will usually identify Oxygen (O2) Sensors by the Bank Number (B1 = Bank 1; B2 = Bank 2) and Sensor Number (S1 = Sensor 1; S2 = Sensor 2, etc.). Bank 1 is not on the same side of the engine for every vehicle.

  • Bank 1 will always contain Cylinder 1. To locate Cylinder 1,
    • Check for cylinder labels on spark plug wires
    • Look for the cylinder that is closest to the front of the engine
    • Refer to your Repair Manual (Found under 'Literature')
  • Bank 2 refers to the bank opposite Bank 1
  • Sensor 1 refers to the sensor before the catalytic converter (Other Terms: Upstream Sensor, Pre-Cat Sensor)
  • Sensor 2+ typically refers to the sensor(s) after the catalytic converter (Other Terms: Downstream Sensor, Post-Cat Sensor)
Engine Bank Identification
Engine Bank Identification
Common O2 Sensor Locations

Vehicle and part manufacturers sometimes use different terms than diagnostic tools to identify sensor positions. Regardless of the vehicle's engine orientation, the right or left bank is determined by viewing the engine from the rear (opposite the drive belts).

A
Upstream Sensor (Before Converter)
B
Downstream Sensor (After Converter)
C
Left or Front Upstream Sensor (Before Converter)
D
Right or Rear Upstream Sensor (Before Converter)


Common O2 Sensor Contaminants

Oxygen (O2) Sensors commonly fail due to contamination. When checking or replacing an O2 Sensor, visually inspect the sensor body to determine if it has been contaminated by a faulty part or substance upstream, and correct the fault before replacing the sensor.

ANTIFREEZE POISONING
Common Causes:
  • Cracked or warped cylinder head
  • Leaking cylinder head gasket
  • Leaking intake manifold gasket
Antifreeze Poisoned O2 Sensor
Antifreeze Poisoned O2 Sensor
SILICONE POISONING
Common Causes:
  • Use of an improper silicone gasket sealant on the engine

Silicone Poisoned O2 Sensor
Silicone Poisoned O2 Sensor
CARBON BUILDUP
Common Causes:
  • Clogged air filter
  • Leaking or defective fuel injector

Carbon Buildup O2 Sensor
Carbon Buildup O2 Sensor
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Alternate/OEM Part Number(s): 8946519295, 94848999

ULTRA-POWER Warranty Information:
12 Months