I have bought 2 Multi Port Fuel Injectors for my 2004 Chevy Blazer 4.3 Vortec. Both had the same manufacturing defect. They started spraying fuel from the nipple underneath the intake and return ports.
I have searched for either Delphi or AC Delco MPFI now everywhere. I can't find one on the either of their websites. I have found 2002 spider injectors but it says does not fit my vehicle.
I thought about finding one in a salvage yard and switching out the individual injectors.
The oem fuel metering body is a solid cast whereas these cheap Chinese garbage parts run that nipple through a hole that ends up leaking.
I have read some good things about Standard parts and Amazon does sell one for my blazer but again it is made in China.
Its not difficult to dismantle these units and switch parts. So I am willing to do anything that will work. I have had to remove the plenum 4 or 5 times in 2 months. Im pretty good at it now but I never want to do it again.

https://youtu.be/0dyFSyOesDk?si=RNX0AICwhCXk95OS

 

Have you tried cross-referencing parts numbers for the injectors for the various years to confirm what would fit?

 

Here's a link with lots of cross-reference info that may help.

I saw a GM injector assembly for a 2002 at Rock Auto. Perhaps it could work for you.

http:/www.motormanfuelinjection.com/page/subpage/New-Fuel-Injectors/GM-V6-MFI.htm

 

Thank you. I don't know why i am having such a hard time. Find an oem mfi

I checked the link and they are backordered. Such luck. That was exactly what I was looking for. Thanks again. I will probably buy the fuel metering body from enay $25 and switch everything over.

 

You are welcome.

I was thinking that perhaps you could determine from the information on that website if the OEM one for a 2002 I found at RockAuto might work.

 

I did see the GB reman but its a scpi i ​​am seeking a mfi. The ultra brand doest say anything about being oem and the standard is the same way.

I have read online that some diy individuals fix leaks with a plastic welder. At this point my choices are weld or buy an oem fuel meter body from ebay and swap the lines. I have 4 days to make a return or im stuck with it.

 

Motor Man | GM Vortec 4.3L Fuel Injector Spider Assembly 25379923 - Returnless | eBay

This is from the Motorman company, only place I'm aware of to get the real GM MPFI spider.