Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Downstream (1/2, 2/2)






8.4L - DOWNSTREAM 1/2, 2/2

1. After removing the sensor, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite(R) 771- 64 or equivalent. New sensors have compound on the threads and do not require an additional coating.
2. Install sensor using an oxygen sensor crow foot wrench.
3. Tighten the sensor to 41 Nm (30 ft. lbs.).
4. Plug sensor connector.
5. Lower vehicle.