AC Delco Seal Tabs

FED 387 · 05-16-2018, 03:45 PM

12378255 GM part number

Tom Goldman · 05-16-2018, 08:35 PM

The GM "horse pills" saved my butt many times when I ran welded GM 074 castings.
Subaru also has a sealer that works amazingly well and its cheap, about $1.50 for a 3 oz bottle. they call it a "conditioner" but it really works on leaky heads and since its a liquid ,it doesn't block up the rad passages.

brian schuetta · 05-17-2018, 10:45 AM

Will try them then on the new engine we are about to finish.

05-16-2018, 03:45 PM	#1
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,426 Likes: 550 Liked 335 Times in 182 Posts	Re: AC Delco Seal Tabs 12378255 GM part number

05-16-2018, 08:35 PM	#2
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,478 Likes: 894 Liked 886 Times in 238 Posts	Re: AC Delco Seal Tabs The GM "horse pills" saved my butt many times when I ran welded GM 074 castings. Subaru also has a sealer that works amazingly well and its cheap, about $1.50 for a 3 oz bottle. they call it a "conditioner" but it really works on leaky heads and since its a liquid ,it doesn't block up the rad passages. __________________ Tom Goldman 1500 SG , 1506 STK

05-17-2018, 10:45 AM	#3
brian schuetta Member Join Date: Apr 2005 Location: san antonio tx Posts: 259 Likes: 5 Liked 28 Times in 15 Posts	Re: AC Delco Seal Tabs Will try them then on the new engine we are about to finish.