I will be changing the opti on my car this weekend, and was wondering if I needed to order any seals or gaskets before hand. Is there anything else I will need other than the opti and a new gasket? Thanks for your reply's Cory

 

Water pump gaskets for sure. You may/may not need o-rings for the water pump drive (#156 in drawing) and opti drive (if vented-you did not post the year of your car).

GM p/n

12553792 water pump o-ring 2 required
10474278 opti o-ring 2 required
10128343 water pump gaskets or Fel Pro#35072

 

lemee see here...

*waterpump gasket
*coolant
*pulley puller - maybe, if it doesnt come off
*bucket to catch the coolant
*rags
*buy new waterpump - unless it's alrready been replaced recently

I think thats about it if I remember correctly. If you need a guide, do a search.

 

hey shoebox i went and got the 2 sets of O rings with your part numbers but the guy just gave me 4 o rings didnt know which was which 2 are yellow 2 are blue which gos to which?

 

Beer.

Trust me, you'll need a few.

 

Easy to remember-blue ones for the water pump.

 

Blah.... I am confused. If they have part numbers then how come he didnt know what was what??


Marvin

 

Wow, I was all scared the first time I was gonna change the opti. You guys make it seem like a day long project, I had it off in 20 minutes....*shrug* Took about the same amoutn of time to get back on. Screw a puller, i just smacked the hell out of it with a rubber mallet.

 

I learned this the hard way. Buy a fel pro timming cover gasket set it has every gasket and new seals also and is cheaper.

 

Maybe the parts guy just threw them out there loose and not in any package.