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

EVIL ENERGY O2 Oxygen Sensor Fitting Bung M18x1.5 Pack Of 2

EVIL ENERGY O2 Oxygen Sensor Bung M18x1.5 Copper

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

Dorman 42009 Spark Plug Non-Fouler - 18mm Gasket Seat, Pack of 2

ARES 70039-3/8-Inch Drive by 7/8-Inch (22mm) Offset Oxygen Sensor Socket - Wire Gate Accesses Sensor from Side, Preventing Damage to Wires

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

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

Vibrant 11619 J-Style Oxygen Sensor Restrictor Fitting with Adjustable Gas Flow Inserts