[BFS] Aracer AF1/AF2 Replacement O2 Sensor

**LIMITED QUANITY OF 5/EA** 5 AF2 LEFT IN STOCK!5 AF1 LEFT IN STOCK! Originally $89.99 Replacement Aracer AF1 & AF2 wideband O2 Sensor. 100% Plug and Play with your AF1 & AF2 modules.  Signs that your sensor is bad are the following.  - Reads 25.5 consistently.  - Inconsistent readings. 13.3->18.0->9.0->15.0  - Stuck at 18.0  *All sensors will come with our limited lifetime warranty.