STOCK 99 LS1-need GM part# for MLS head gasket

**9t8z28** · 09-18-2008, 10:59 AM

I need the GM part# for a stock 99 LS1 - MLS head gasket? Everywhere I have searched seems to have all different part#s and bore sizes.

Thanks

**9t8z28** · 09-18-2008, 04:29 PM

2 views! Wow, I guess I need to go over to tech and post this

**GTP231** · 09-18-2008, 07:44 PM

I seem to recall not being able to use the MLS head gaskets on 98 heads. Could be wrong though.
Part number for the MLS gaskets is 12498544 Bolts are # 12498545

**9t8z28** · 09-19-2008, 05:15 AM

Originally Posted by GTP231

I seem to recall not being able to use the MLS head gaskets on 98 heads. Could be wrong though.
Part number for the MLS gaskets is 12498544 Bolts are # 12498545

Thanks for the reply, but my car is a 98 and the engine is a 99 and also, that part# is for 02-04 LS1.

**9t8z28** · 09-20-2008, 05:34 AM

tttt

**GTP231** · 09-20-2008, 08:14 AM

Originally Posted by 9t8z28

Thanks for the reply, but my car is a 98 and the engine is a 99 and also, that part# is for 02-04 LS1.

Didn't know you had a 99 engine in your's

02 is the earliest i've ever seen MLS gaskets stock. They should work on anyother year after 98 though

**GTP231** · 09-23-2008, 07:39 PM

Actually I know for a fact they work on any 99+ plus head from other H/C jobs I've done

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