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WCFab x D&J Precision billet valve covers for 2006–2018 5.9 and 6.7L Cummins are machined from aircraft‑quality 6061‑T6 aluminum and include a baffled breather system. Finished in Cat Yellow, the package includes a WCFab‑engraved cap, D&J custom billet breather, stainless fasteners and a 3/4" breather hose to enhance engine bay styling with functional ventilation.
Wehrli 06-18 Cummins WCFab X D&J Precision Billet Valve Cover - Cat Yellow
