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Power Strokes
6.0 Tech
2003 HPOP without breaking the bank
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[QUOTE="bismic, post: 1482230, member: 1537"] Lets just reason through this. The 03 OEM pump was modified for the introduction of the wavy oil rails (late 04). This pump was still a swash plate design - just higher capacity and pressure (due to the increased oil rail capacity). In 2005 this updated swash plate pump was done away with completely .... a V4 piston design iron pump replaced it. Why would Navistar (and Ford agree) do this? Reason - swash plate design was not reliable enough. These two companies don't make changes without financial reasons to do so. The change was successful - reliability improved and warranty claims were reduced. As far as aftermarket pump having improved reliability (nothing is perfect) - well the evidence is available for those that have the desire to investigate it. As in all things ............... some are better than others. [/QUOTE]
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