Oil pickup tube O ring

[dustiebutt]

I have seen conflicting opinions for the correct oil pickup tube O ring on the LS motor....I recently bought a conversion pan kit and the O ring is reddish in color and is pretty thick ( about .174") ...... I have read that Gm's updated O ring for this app. is a blue O ring #12557752 which is thinner (about .134").....not sure when this suggested update came in to play....makes sense that a fatter one would seal better but just checking in to see if anyone has heard anything on the situation..........thanks

[99sierra4x4]

Noooo! Stay with the red one!

I had the blue one in my 99 sierra for ever, did a cam swap and upgraded to the red one, i have had fantastic oil pressure ever since!

Andy

[GMCwantsLS1]

The blue one is for the f-body pickup tube, the red one is for the truck.

[dustiebutt]

ALSO, was just informed that the red one goes with the tube that has a recess for the O ring........thanks ......