Ford F-Series Pickup Intake Manifold Our intake manifolds are some of the highest quality replacements on the market! Backed by manufacturer's limited LIFETIME warranty. For as long as the original purchaser owns the vehicle, in the event this manifold should fail due to manufacturing defects, we will REPLACE the part free of charge. Warranty is limited to part replacement only. Extraneous cost such as shipping or installation charges are not covered. Failure due to improper installation, or improper use is not covered. An invoice is emailed after your intake ships. Keep a copy of the invoice for proof of this warranty. 1A Auto Parts Offers FREE SHIPPING On All Orders.