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

    , by iFJF Direct Fuel Filter for L5P Duramax — Replacement Guide (2017–2024): Why OEM Cap Fails & Permanent Fix

    The 2017-2020 L5P Duramax fuel filter cap is a known failure point. Our guide explains why the OEM plastic cap cracks, how a 6061-T6 billet...

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