APWI Oxygen Sensor Features:

Catalyst
Sensor element is made with highly pure and concentrated platinum paste imported from Germany. This will result in increased sensor life.

Wire
Supplied with high temperature nickel plated Teflon wire with Dupont material. Wires protected with fiberglass protective sleeve.

Rubber
Made with Viton Flourine rubber boots. Viton is water resistant and will decrease oil steam and vapor residue.

Sensor Body
• Made with high temperature stainless steel for long sensor life.

Frontal Tube
• Double layered with high quality stainless steel imported from Germany. Increases life expentancy of the sensor.

Connector
• OE direct fit connectors. No consolidations.

Hex Nut
• Improved Hex nut design for easier grip and installation.

O2 Sensor Identification Guide

An OBD Scan Tool will usually identify Oxygen Sensors by the Bank Number (B1 = Bank 1) and Sensor Number (S1 = Sensor 1). Bank 1 will always contain Cylinder 1, which is located closest to the front of the engine.

Part manufacturers often use different terms than scan 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).

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

SILICONE POISONING
Common Causes: Use of an improper silicone gasket sealant on the engine Silicone Poisoned O2 Sensor

CARBON BUILDUP
Common Causes: Clogged air filter Leaking or defective fuel injector Carbon Buildup O2 Sensor