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Part #: BSTISK811

Bostech ISK811 HPOP Branch Tube Assembly O-Ring Repair Kit

2003-2004 Ford 6.0L Powerstroke (Built Before 9/23/03)
Part #: BSTISK811
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The Bostech ISK811 HPOP Branch Tube Assembly O-Ring Repair Kit for your 2003 Ford 6.0L Powerstroke is designed to repair  the leaking hard pipe leading to the High Pressure Oil Pump (HPOP). Oil leaks on the early model 6.0L Ford / International Powerstroke high pressure oil system can cause a very challenging diagnostic process.  

One common problem that is often diagnosed as a pump failure is the seal around the hard piping leading to the pump. Bostech has the replacement Teflon and rubber O-rings available now.  This is an item that is not available from the OEM; they only offer the hard piping, not the seals. Fits models built before 9/23/03.  Pump and other pictured metal parts not included.


  • Repairs Leaking Branch Tube Assembly 
  • Fits Early Model With Round High Pressure Pump 
Includes: 5 Teflons, 10 O-Rings, 1 Pump Cover Gasket


  • MFG. NumberISK811
  • Manufacturer NameBostech
  • Weight1.00 lb.


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Most Popular Questions

My quick connect between branch tube and stc fitting is torn. Will this replace that? Hpop
View Staff Answer 

The BOSTECH ISK811 HPOP BRANCH TUBE ASSEMBLY O-RING REPAIR KIT will replace the 5 Teflon seals, 10 o-ring seals and the 1 pump cover gasket on a 2003 Ford 6.0L Powerstroke (Build before 09/23/2003).

does this come with directions
View Staff Answer 
Installation instructions are not included. Please refer to your vehicles repair manual for removal and replacement of these parts.
my 2004 excursion has j tube,round pump,wavy oil pressure rail.Will these fit?
View Staff Answer 
These will fit 6.0L Powerstrokes built before 9/23/03. Check your build date to confirm.