Size: Internal And External Thread Pitch M18 X 1.5, 46mm Length. 2x O2 Oxygen Lamda Sensor Spacer Adapter. For example the O2 sensor is too sensitive, the CEL will still on after you load the eliminator.
eBay
Oxygen Sensor Extension Kit 45mm M18 1.5. Excellent Performance: Designed with a M18 1.5 thread pitch and a length of 45mm, this check engine light eliminator adapter effectively increases the distance between the O2 sensor and the exhaust system—perfect for enhancing your vehicle's overall performance.
eBay
O2 Oxygen Spacer Sensor Angled Extender 90 Degree M18x 1.5mm Zinc Hole For Car. They are very easy to install by unscrewing your O2 Sensor from your exhaust then screw your sensor into the extender,and then screw the two pieces.
eBay
The oxygen sensor connector M18 x 1.5 is made of high-quality and durable materials. It has the functions of crack resistance, corrosion resistance and heat resistance. Easy to install: fast and easy to install, the thread made with special tools will fit all M18 x 1.5 sensors, that is, various car models.
eBay
1 x Oxygen Sensor Adapter. Using this tool can reduce exhaust emissions and improve fuel consumption. Small in size and easy to carry, you can put it in the car and use it when needed. Size: 58x22mm.
eBay
2 x Oxygen Sensor Extender Spacer. Easy to install with 7/8 hex head to match most O2 sensors. Threads made with dedicated tool (perfect accuracy and repeatability).
eBay
2 x Oxygen Sensor Extender Spacer. Easy to install with 7/8 hex head to match most O2 sensors. Threads made with dedicated tool (perfect accuracy and repeatability).
eBay
3、Exclusive Design: 90 degrees design, larger internal space, better O2 reading, better air degreasing effect. Loosen old O2sensor spacer, bolt it on new 90 degree sensor spacer. 4、Practical Part: The built-in catalytic converter eliminates the need to check the engine light (CEL) after modifying the exhauster or disassembling the catalytic converter.
eBay