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5,992 Posts
The sensor is a wear item. Many things can affect their lifespan like over-rich A/F ratios, high EGTs, moisture, leaded gas, distance from exhaust ports aka heat, placement in your exhaust pipe, etc. Most companies use the Bosch sensors for their widebnds, and at an average price of $60.00 no need to worry, just pickup a replacement, and install it.
