Howto: Seal ff 14bolt axels - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Coleman · 11-17-2005, 10:14 PM

Dumb question but I can't find any old topics on this. I'm switching out an old ho72 rear end on my 68 k20 for a 14bolt ff rear end. I noticed the last person sealed the axels with silicone, is the a common practice ? I would think I could get gaskets or something better than gooping silicone to seal these axels. The guys at the parts store have no clue.

Mudder · 11-17-2005, 10:37 PM

You talking about the cover? I have seen it done. You can get a gasket for them but I have seen places use silicone.

Coleman · 11-17-2005, 10:55 PM

Nope, the axel part out where your bolt it in by the hub

nu2-72 · 11-18-2005, 11:21 AM

The axles actually have a steel gasket. I cannot find the correct # right now but if you call GM and ask for group 5.819 parts they should be able tolocate it.

**kwmech** · 11-18-2005, 11:05 PM

The steel shim gasket is no longer available at GM. What they have now is a paper gasket. Silicone will work however, just don't get carried away with it.

jims69 · 11-22-2005, 06:31 PM

I believe that it is the same as the Eaton Axle flange gasket
Felpro # 55350, $2 or $3 ea these are the steel ones, makes it alot neater than silicone.

11-17-2005, 10:14 PM	#1
Coleman Registered User Join Date: Nov 2005 Location: Tucson, AZ Posts: 50	Howto: Seal ff 14bolt axels Dumb question but I can't find any old topics on this. I'm switching out an old ho72 rear end on my 68 k20 for a 14bolt ff rear end. I noticed the last person sealed the axels with silicone, is the a common practice ? I would think I could get gaskets or something better than gooping silicone to seal these axels. The guys at the parts store have no clue.

11-17-2005, 10:37 PM	#2
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Re: Howto: Seal ff 14bolt axels You talking about the cover? I have seen it done. You can get a gasket for them but I have seen places use silicone.

11-17-2005, 10:55 PM	#3
Coleman Registered User Join Date: Nov 2005 Location: Tucson, AZ Posts: 50	Re: Howto: Seal ff 14bolt axels Nope, the axel part out where your bolt it in by the hub

11-18-2005, 11:21 AM	#4
nu2-72 Senior Member Join Date: Apr 2001 Location: Amazonia, Mo. USA Posts: 2,821	Re: Howto: Seal ff 14bolt axels The axles actually have a steel gasket. I cannot find the correct # right now but if you call GM and ask for group 5.819 parts they should be able tolocate it. __________________ 72 3/4 4x4 350 4spd 72 3/4 4x4 350 auto 2004 Duramax Silverado 4x4 2006 Duramax Crew cab 4x4 2010 Harley Ultra Limited 2011 Harley Street Glide

11-18-2005, 11:05 PM	#5
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,574	Re: Howto: Seal ff 14bolt axels The steel shim gasket is no longer available at GM. What they have now is a paper gasket. Silicone will work however, just don't get carried away with it.

11-22-2005, 06:31 PM	#6
jims69 Registered User Join Date: Feb 2005 Posts: 82	Re: Howto: Seal ff 14bolt axels I believe that it is the same as the Eaton Axle flange gasket Felpro # 55350, $2 or $3 ea these are the steel ones, makes it alot neater than silicone. __________________ Jim SW PA. 69' GMC SWB 4X4 (in progress). 86' GMC LWB 4X4 (daily) 86' Chevy LWB 4X4 (beater)



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