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Stainless Works long‑tube headers for 2020–2021 Ford F‑250/F‑350 7.3L applications feature 2‑inch primaries and 3‑inch collectors with integrated high‑flow catalytic converters to enhance exhaust throughput. By altering primary diameter and collector flow compared to stock manifolds, these headers are intended to change exhaust characteristics and support owners pursuing specific flow behavior for the 7.3L engine.
Stainless Works 20-21 Ford F-250/F-350 7.3L Headers 2in Primaries 3in Collectors High Flow Cats
