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SPELAB #SPOS00674 O2 Oxygen Sensor Extender Spacer Adapter M18x1.5

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Vehicles & Parts > Vehicle Parts & Accessories > Motor Vehicle Parts

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

  • FITS MOST STANDARD CAR OXYGEN SENSORS: All the thread size of the oxygen sensor extender is M18x1.5mm, so the oxygen adapter is applicable to most modern vehicle cars and easily screwed into upstream and downstream o2 sensor and car exhaust, and fits most car's O2 sensor threaded socket or tool.
  • ADVANTAGE: The benefit of having the"Oxygen Sensor Adapter" backing it out of the way of the exhaust flow. It allows you to tune your air/fuel ratio by hooking up a potentiometer to your oxygen sensor (and or) your MAP sensor.
  • RIGID STEEL CONSTRUCTION: Each bung o2 sensor is constructed of mild steel to avoid cracking and excessive heat expansion. After each o2 oxygen sensor spacer is manufactured it is coated in a durable corrosion-resistant plating an polished to a mirror finish.
  • Common Code: P0420, P0421, P0422, P0423, P0424, P0430, P0431,P0432,P0433, P0434



  • In extreme situations narrowing of the inlet hole prevents motor failure (driving at high speed).
  • Polished front surfaces enabling perfect tightening.
  • Threads made with dedicated tool, perfect accuracy and repeatability.
  • Simple installation. Just unscrew the lambda oxygen sensor, screw in the emulator in its place and then screw in the oxygen sensor.


Details and Specifications:

  • Brand Name: SPELAB
  • Model Name: SPOS00674
  • Material: Stainless Steel
  • Item Weight: 75g
  • Special Features: oxygen sensor connector
  • Year: All
  • Item Type: Fuel Supply & Treatment
  • No. of Cylinders: 4 Cylinder
  • Type: Lambda Sensor Extender
  • Size: M18*1.5

Returns Policy

We hope you love what you've ordered! But just in case you're not 100% satisfied we've made the return process super easy.

If for any reason you are unhappy with your order or should you wish to return or exchange a product then please contact us at any time from Monday to Friday within 14 days after you received the item. Return shipping address will be provided and you will get the refund within 3~5 business days after received the return item. Email us at

All of our products are sold with a 14 day money back guarantee and must be shipped to us within 14 days of you receiving them. Returns can only be accepted of products that are unopened, unused and still in their packaging or with their tags still attached. We will only accept the returned items in the same condition as we sent.We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

Please make sure when returning something that you securely package the item as anything damaged in the post and returned back to us due to being insufficiently packaged may receive no refund. Refunds will be issued back to the original method of payment or store credit only.


Normally, we will ship the product customer ordered from the nearest warehouse. Customers will get their items in 5-10 work days. However, we can not promise products customers want are in stock every time. Transfer cargo needs more time.

Usually, our products are free shipping with orders over $15. Some products may need freight.

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