90 Degree Oxygen O2 Sensor Socket Real Mini Catalytic Converter 201 Stainless

Ternence Flynn o2 Sensor For Check Engine Light Adapter Spacer Built-in M18X1.5 Catalytic Converter

O2 Sensor For Check Engine Light Adapter Plug Spacer with Built-in Mini M18X1.5 Catalytic Converter

Defouler (2x) Straight M18 x 1.5 fits Header and Exhaust Pipes.

EVIL ENERGY M18 x 1.5 O2 Oxygen Sensor Restrictor Fitting Adjustable Gas Flow Inserts Cel Fix Bung

JGR 2PCS Defouler Straight M18 x 1.5 For O2 Oxygen Sensor Lambda Sensor Fitting Bung

90 Degree Defouler with 2 Straight Defouler for Headers and Exhaust pipes

2PCS O2 Defouler Straight M18 x 1.5 fits Header and Exhaust Pipes Stainless Steel

JGR Oxygen Sensor O2 Lambda Sensor Extender Spacer for Decat & Hydrogen M18 X 1.5

4 Packs M18 x 1.5 Oxygen Sensor Fitting Bung Defouler Straight O2 Oxygen Sensor Restrictor Fitting

DEWHEL Defouler 2PCS Straight O2 Oxygen Sensor Fitting Bung M18 x 1.5 fits Header and Exhaust Pipes.