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Not to hard, just get some PB Blaster spray it on the old o2 sensors and let it soak overnight. Give it a good soaking and a little heat helps, mabey take it for a spin before you remove them or a propane torch works well. Make sure you use the correct size wrench and when you put the new ones in clean the rust out of the threads and coat them with anti-seize lube. Be careful not to get it in the sensor, just on the threads. When you put the new ones in don't plug the wire back in until you have tightened the sensor down, it prevents the wires from twisting up.
P.S. Do not over tighten or cross thread, finger tighten them first.
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"The things you own end up owning you. It's only after you lose everything that you're free to do anything."
92 Pearl White Ls-l (138k) Euro Headlights & Blinkers, 97 Grill, Euro Tail Lights, SS Brake Lines, Stebro Exhaust, Slotted Rotors, Classic Registration
96 Legacy Outback (206k) 5-speed 2.2 Lightweight Crank Pulley, Group N Trans & Motor Mounts SOLD
Wanted: Steering Wheel
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