If you don't transfer your timing marks from your old main pulley to the new one you will be S.O.L.

Includes the following:

• Water Pump Pulley (Standard Size, Not over or under sized.)
• Engine Pulley (Standard Size, Not over or under sized.)
• Alternator Pulley (Standard Size, Not over or under sized.)
• Belt

Gets rid of your air pump.

You will still be able to use your power steering & air conditioning.
Simply place your stock ac pulley on top of our main engine pulley, then the power steering on top of that one.
Mount them like a hamburger in heat.

Engines pre-1986, the main pulley will be able to go on in four different variations, engines 1986+ you will only be able to put the main pulley on one way.