Nissan NI-43897-18 Oxygen Sensor Thread Cleaner - 18mm

Nissan NI-43897-18 Oxygen Sensor Thread Cleaner - 18mm

Kent-Moore Number J-43897-18

for Nissan / Infiniti

To recondition the exhaust system threads before installing a new O2 sensor, you can use a thread chaser/cleaning tool. This tool is specifically designed to clean and repair damaged threads without removing too much material. Here are the steps to use the thread chaser tool:

1. Ensure that the exhaust system is cool and the engine is turned off before starting.
2. Identify the affected exhaust system fitting, either on bank 1 (B1) or bank 2 (B2), where the O2 sensor was removed.
3. Select the appropriate thread chaser tool size that matches the thread pitch and size of the O2 sensor. Make sure it is also compatible with the exhaust system fitting.
4. Apply a small amount of penetrating oil or lubricant to the threads of the fitting to ease the cleaning process.
5. Gently insert the thread chaser tool into the fitting, making sure it aligns properly with the existing threads.
6. Slowly rotate the tool in a clockwise direction, applying even pressure. You may need to use a wrench or socket to turn the tool if necessary.
7. Continue rotating the tool until it reaches the end of the fitting, ensuring all the damaged threads are cleaned and smoothed out.
8. Remove the thread chaser tool from the fitting and inspect the threads for any remaining debris or burrs. If needed, repeat the process until the threads are clean and smooth.
9. Carefully remove any excess lubricant or debris from the fitting using a clean rag.
10. Now you can proceed to install the new O2 sensor. Ensure it is properly aligned and tightened according to the manufacturer's specifications.

Remember to use the appropriate safety equipment, such as gloves and eye protection, when working with tools and chemicals.

Manufacturer: SPX/Bosch (OTC Rotunda Kent-Moore Miller)

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