i believe i need a fuel filter head assembly for lb7 d max mine is leaking fuel and i am sure its cracked

Try Dmaxstore.com. They have the assembly head only or the whole assembly. They also sell o-ring repair kits. the assembly head is selling for $119.99 plus shipping. However, the intake-outflow tubes are angled down instead of straight out. I am in need of one myself so do some research and I'll do the same. Good luck. :cool:

Double check and make sure its cracked. It may just need a rebuild with a kit like this one below. It will save you a bunch of money if you only need to rebuild it.

FF Rebuild Kit (http://madjacksynthetics.com/GM-Duramax/Fuel-System-Parts/Duramax-Fuel-Filter-Head-Rebuild-Kit/prod_282.html)

It is common for the FF head to leak and need a rebuild. If its cracked in the wrong spot you will be losing prime. Are you losing prime at all?

If you find that it is cracked we can also get you the FF head assem. We ship to Canada all the time using USPS Priority Mail.

What year is your truck Kohlrusch?

My truck is a 2003, LB7. It has not lost prime and is not leaking, however on my last fuel filter change my fuel filter could not be primed using the plunger. The mechanic said that the o-rings were probably shot due to Ultra low sulfer diesel fuel over time. I had him back pressure the fuel tank and prime it that way. I have not had anymore poblems but I need to do something before my next scheduled filter change. I have some time to fix or change things out. Please advise.

Sounds like you need to rebuild fuel filter head with the kit in the link in my above post.