Oldsmobile 350 400 403 425 455 Flat Guide Plates (3/8" Pushrod - 7/16" S/H 1Pc.)

You need guideplates to keep your pushrods from deflecting under high-rpm conditions. That's just what our PCE guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.