The factory plastic crankcase breather cover on the 6.7L Cummins is prone to warping and cracking after years of heat cycles, sometimes shearing off portions of the flange. PPE's one-piece cover is precision machined from billet 6061-T6 aluminum for long-lasting heat and warp resistance and a clean, high-end look. Installation is completely drop-in: it works with the factory CCV filter and retains the factory CDR valve.
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