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Weldona, Colorado 970-368-4455

DieselOrings is a small, family owned and operated business located in the sparsely populated plains of Northeastern Colorado.
UPS is delivering orders in a reasonable time compared to what we see with USPS.
Please understand that these delays are out of our control.
  3/26/2020 - UPS has suspended Guaranteed Delivery for Next Day Air, 2nd Day Air, 3 Day Select and Ground.
UPS has denied all claims for missed delivery dates. (LINK)


Oil End Plug and Gasket

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#15-007 Oil Rail End Plugs - Cylinder Heads

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Availability: In stock

High Pressure Oil Rail End Plug & Gasket

Oil Rail End Plugs - Cylinder Heads

High Pressure Oil Rail End Plug & Gasket Oil rail plugs located on either end of the cylinder head require a specialty o-ring if they begin to leak. This is the large round 1 3/4" plug with the 1/2" drive socket hole. During engine rebuild it is good practice to replace these plugs and gaskets since they are almost impossible to reach once the engine is installed in the bay.

International - 1827535-C91
Ford - 4C3Z-6026-CA

Download Instruction sheet here.

Ford and Navistar's instructions recommend the use of LocTite 277 threadlocker on the Oil Rail End plugs.

LocTite 277

You can purchase a 10ml tube of LocTite 277 By selecting this item form the "Related Product" list at the top of this page.


Order of 1 is 1 plug, gasket o-ring and instruction sheet.

Item #15-007

Orders Over $99 with *Free Shipping on US orders ships via US Postal Mail including Hawaii, Alaska and PR. Weight restrictions apply to Hawaii, Alaska and PR
*Free Shipping on large and/or heavy orders ships via UPS and only applies to orders to addresses within the Continental US (excluding Alaska).
UPS shipments outside the Continental US will incur additional charges.