Check the listing for details. 6 Pack O-Rings for Ford Electronic AC Control Module / Silicone Material. Condition: New. Listed at 6.49 USD. 6 Pack - O-Rings for Ford Electronic AC Control Module (Quantity of 6) Silicone O-Rings for Ford Electronic AC Control Module EATC If your Ford vehicle with an Electronic Automatic Temperature Control (EATC) is only blowing air through the defrost vents, the EATC O-rings are likely worn out. First, check for blown fuses and other issues, but the O-rings are a common problem. This affects many Crown Victoria, Mercury, and F-150 owners, and any Ford with EATC can have this issue. When the EATC malfunctions, the system defaults to the defrost vents. You can fix this by replacing the four O-rings inside the EATC dashboard unit. If you're skilled with repairs, it should take less than an hour. - Silicone material- Direct fit after-market replacement- Made in the USA User must install according to manufacturer specifications.All brand new parts, satisfaction guaranteed.