|The replacement plug is a 'long threaded" plug made from high quality 303 Stainless Steel and is machined to the exacting Navistar standards exclusively for DieselOrings.com. This plug can successfully repair a HPOP "non-serviceable" plug that has completely stripped out the factory threads.
To service this plug, the HPOP must be removed from the engine. A new gasket must be used to reseal the HPOP to the front engine cover. Order a new gasket by using the checkboxs above or the "Related Produts" in the right column of this page.
The Serviceable plug comes with a new o-ring and a .5ml packet of LocTite 680 Retaining Compound. Manufactured by DieselOrings.com
Made in the USA.
HPOP "New Serviceable Plug" replacement Instruction Sheet: Download PDF file Here.You must have Adobe Acrobat reader installed on your computer to download this document.
Before removing the HPOP, it is necessary to remove the fuel canister on the 99-03 7.3L. The 4 hard lines will require new sealing sleeves as these are not reusable and will leak if attempted to be reused.
We recommend purchasing the 7-003 Fuel bowl reseal kit that contains the 4 new sleeves for these fittings.