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

These Speedmaster automatic transmission pans are OEM replacements for your vehicle

Switch out your weak and thin factory retainer plates with Speedmaster heavy-duty bearing retainer plates and make your ride a lot safer

Try using Speedmaster steel crankshaft pulleys to increase horsepower and reduce accessory drag

Will work with any Speedmaster or Speedmaster bellhousing

and include a mounting bracket

Oldsmobile 350 400 403 425 455 Flat Guide Plates (3/8" Pushrod - 7/16" S/H 1Pc.) These Speedmaster automatic transmission pansYou need guideplates to keep your pushrods from deflecting under high rpm conditions. That's just what our Speedmaster guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.