2004.5-2010 LLY/LBZ/LMM Duramax PCV Breather Kit

Fits: -04.5-05 LLY Duramax -06-07 LBZ Duramax -07.5-10 LMM Duramax Includes: -Vent Plug -Barbed Valve Cover Fittings -Stainless Barbed Tee -8 Ft of 5/8" Hose -Hose Clamps Optional Resonator Delete Plug Fitment Note : Aftermarket Intake Horn requires our silicone cap kit, please ensure proper selection
The stock closed crankcase vent (CCV/PCV) system on Duramax engines is notorious for allowing oil vapors to recirculate back into your intake. Over time, this leads to:   -Gummed-up intercooler boots   -Oil-soaked turbo inlet pipes   -Reduced performance and longevity   This CCV Breather kit reroutes those crankcase gases keeping the intake tract clear of oily deposits.