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(888) 312-8812 Login SignupThe Capacity DEF Tank Header combines several tank-side DEF functions in the head mounted at the diesel exhaust fluid reservoir. Because those functions are built into the head, you can replace it separately from the tank shell and downstream dosing hardware. At the tank, the Capacity 911181 has to agree with the reservoir connections and sensing setup already on your truck. Replacing the header alone lets the tank shell and downstream DEF hardware stay in place when those larger pieces are still serviceable.
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