Here are all sides of the recall's expansion tank that I removed from my car. If you look at the tank in your car,
shankster, you'll notice that you have 3 ports to connect to hoses while the recall tank only has 2. To perform the recall, you have to source both hoses for the new tank in addition to the tank assembly. The black plastic tube is the coolant level sensor the recall adds to our cars. There is no plug for this sensor, so the loom is modified to add a plug and then the car is reflashed to throw a CEL when the sensor detect a low coolant level. You will not get a CEL for low coolant without reflashing your car.
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This seam in the middle is what I was told will weep coolant. The reason I was warned is because the tank doesn't visibly crack or leak coolant, it only weeps, and will weep enough to overheat your car on a summer track day in Texas. The way to catch these leaks is to run your finger along the seam and see if you finger comes away wet. So you'll still need to be checking your coolant level with the new tank if you don't have your car flashed to utilize the sensor.
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I will admit that I did not have any issues with coolant loss while this tank was installed on the car, but I also reinstalled my tune as soon as Cobb updated the Accessport for recalled Fiestas. That AP update eliminated the CEL this sensor would throw so I still checked the tank and coolant levels at least once a day when I was at the track. Now I have an aluminum reservoir tank (I needed the metal tank to attach a mount for a shock reservoir) and I don't check as often.