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Ford OEM High Pressure Oil Rail Plug
These are the plugs on front and back of both cylinder heads that cap off the end of the high pressure oil rail. After years of use, the o-rings tend to deteriorate and start to leak. Do you have an oil leak from the front or back of your cylinder heads on your 7.3L Powerstroke? These are more than likely what are leaking. This is a super easy part to replace. These are sold individually. If you would like to replace all of them on the engine you will need to order a quantity of (4).