Do O2 Sensor Spacers Really Work?

O2 spacer extends the gap between the o2 sensor and the exhaust gases, with an increased gap, it will provide a lower Co2 reading. ... However, 90% of the time they will work provided the original o2 sensor is not faulty.

What do 02 sensor spacers do?

The spacer puts the O2 sensor out of the exhaust flow. This tricks the ECU into thinking that the cat is working when you don't have one or have a high flow one.

What causes an oxygen sensor to fail?

O2 sensor failures can be caused by various contaminants that enter the exhaust. These include silicates from internal engine coolant leaks (due to a leaky head gasket or a crack in a cylinder wall or combustion chamber) and phosphorus from excessive oil consumption (due to worn rings or valve guides).

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.