Car Oxygen O2 Sensor Adapter M18 x 1.5 for Check Engine Light

Stabilizes post-cat O2 readings with a compact stainless catalytic insert.

Designed for vehicles with modified exhausts or removed catalytic converters, this O2 sensor adapter features a compact catalytic insert to help stabilize post-catalyst oxygen sensor readings. Machined from SS304 stainless steel with a stainless filter mesh, it screws in with M18 x 1.5 threading for a simple install. Intended for off-road or track use; follow local regulations.

Why You Will Like It

• Durable SS304 stainless construction resists rust and corrosion
• Compact catalytic insert helps produce more representative post-cat O2 readings
• Simple screw-in M18 x 1.5 fit for quick installation
• Helps reduce likelihood of post-O2 sensor triggered CEL codes during off-road use

Everyday Use

SS304 stainless steel body with stainless filter mesh and a small internal catalytic element. Thread: M18 x 1.5. Weight approximately 0.088 lb (40 g). Designed to plug into post-O2 sensor ports to alter sensor readings for non-road use. Does not replace proper emissions equipment or diagnostics.

Good To Know

• For off-road or track use only; not intended for public road emissions compliance
• Check local laws before installing — removing emissions equipment may be illegal
• May not clear existing stored diagnostic trouble codes; use a scanner to verify and reset codes
• Confirm sensor type and thread compatibility before purchase and torque to manufacturer specs

Package Includes

1 x O2 sensor adapter (M18 x 1.5) with integrated small catalytic insert