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  • Duramax L5P Fuel Filter Housing Cap - OEM Plastic vs Aftermarket Aluminum - TP1015 Upgrade Guide

    , by iFJF Direct L5P Duramax Fuel Filter Cap Fix: Stop OEM Plastic Failure & Protect Your CP4 | Billet Upgrade Guide [2017-2024]

    OEM L5P fuel filter cap cracking? GM TSB #18-NA-103 confirms it. Fix it permanently with iFJF's 6061-T6 billet aluminum cap — 4.7★ (360+ reviews), Amazon's...

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