The PLM O2 Sensor Adapter O2-CEL-FIX-ADJ is a must-have for off-road and race-only builds looking to reduce unwanted check engine lights (CEL) from secondary O2 sensors. Also known as a "fouler" or "CEL fix," this adapter threads into your M18 x 1.5mm O2 bung and allows the oxygen sensor to sit further from the exhaust stream, helping to reduce false emissions-related codes.

What sets this unit apart is the 3 included flow inserts that allow you to fine-tune exhaust gas exposure for optimal results. Built from CNC-machined stainless steel, this adapter installs easily using basic hand tools with no cutting, wiring, or welding required.

VEHICLE FITMENT

• Universal Fit

• Threads into any M18 x 1.5mm O2 bung

• Intended for secondary O2 sensor (after catalytic converter)

KEY FEATURES

• Adjustable inserts for exhaust flow control

• Reduces likelihood of CELs on off-road/track builds

• Stainless steel, CNC-cut construction

• Threads: M18 x 1.5mm

• O2 sensor threads into female side

• Length: approx. 1.8 inches

• Easy bolt-on install with no wiring or cutting

• Sold as one complete adapter kit