Lb7 primer pump rebuild

tommywalton1974

New member
Jul 14, 2011
53
0
0
moon lake mississippi
I have had an issue with loosing prime from time to time. While using the hand primer the other day I noticed diesel and air bubbles coming from under the pump assembly between the filter housing and pump. After disassembly I see that all I need is the one o-ring that seals the plunger to the housing. I called gm to get the o-ring. They say oh no sir no part number on that you must buy the assembly for 668.00 I laughed at the man. I will not. I need a .30 cent o-ring. Has anyone had this issue? Any suggestions on where I could get one? Hell any suggestions at all? Thanks.
 

ripmf666

Active member
Sep 20, 2006
15,123
14
38
47
Wentzville Mo
I have had an issue with loosing prime from time to time. While using the hand primer the other day I noticed diesel and air bubbles coming from under the pump assembly between the filter housing and pump. After disassembly I see that all I need is the one o-ring that seals the plunger to the housing. I called gm to get the o-ring. They say oh no sir no part number on that you must buy the assembly for 668.00 I laughed at the man. I will not. I need a .30 cent o-ring. Has anyone had this issue? Any suggestions on where I could get one? Hell any suggestions at all? Thanks.


The filter head rebuild runs around 26.00 shipped.