Ferocity02

iTrader: (59)

I'm compiling a list of parts I need for my cam/spring/lifter swap. There are two oil pump o-rings, a blue/green and a red one. There is conflicting information online about which one I need.

#12557752 - Green
#12584922 - Red

Speed Engineering suggests I need the red one. Anyone?

Thanks!

CODE4LS1

iTrader: (4)

I have always used a true blue one....it's nice and thick. I do not have a part number though, sorry man. I have also used the red one before the true blue came out in case that helps.

hirdlej

iTrader: (31)

The red one is what you need. Unless you bought the Lingenfelter high pressure pump, they include a black or a blueish-green one. In that case, you use the blueish-green one.

regcabls6

red for sure! green is for the car pick up tube.

BlownChevySS

iTrader: (1)

When I tore down my motor, I found the blue/green one (car type) in it from factory. I was advised go red because it was for trucks, and have had no issues whatsoever. Go red.

BTW, the red one is thicker, not the blue/green one.

Tootall

iTrader: (79)

red . . . unless you like not having oil pressure on start up !

budhayes3

iTrader: (19)

Red, the blue-green one is not thick enough. Many guys have found this out the hard way, I've read multiple threads about it...

fredkj3

iTrader: (1)

whatever you dont reuse old one.... haha i did and i had no oil pressure.... i got a redish orange one from GM.. but the one that came out was green... go figure!!!!