PDI Cummins Aluminum Fill Tube for X15 | ISXAvailable for all Cummins X15 and ISX Engines PDIs BIG BOSS Aluminum Fill Tube and Cap design eliminates the hassel of trying to pour oil over the top of your power steering reservoir. The longer fill neck design brings height up to a higher and more visible location. Coupled with our billet designed cap, you will no longer rely on a plastic cap!
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