21496277 Fill Retainer | OEM Replacement For Mack Truck Engine

21496277 Fill Retainer | OEM Replacement For Mack Truck Engine This premium fill retainer with OEM part number 21496277 serves as a direct replacement part for Mack heavy duty truck engines. Made to strict OEM standards, it delivers accurate fitment, dependable sealing and consistent performance in tough working environments. It firmly locks the fill assembly in place to avoid loosening and fluid leakage, lowering the chance of engine breakdown and prolonging component