Does gasket exist?

chriscraft7215

Recruit
Joined
May 13, 2019
Messages
2
Wanting to know if a gasket was ever made for OMC King Cobra 454 where upper gear housing meets transom? Nothing shows in diagram and cannot find any aftermarket parts. Was mentioned to me that OMC may not have had one for that outdrive.
 

harringtondav

Commander
Joined
May 26, 2018
Messages
2,473
I'm repairing and resealing a neighbor's '88 3.0L Cobra. Marineengine dot com has full parts diagrams for OMC drives. They stock available OMC parts as well as Sierra parts which cover most NLA OEM parts. I copy their p/ns and see if they are available here at iBoats or google for better prices elsewhere.

'89 and earlier 7.4 Cobras used 0915850 OMC gasket, 18-2918 Sierra gasket. It appears '90 later model Cobras used a formed O ring in the OMC 3850755 upper gear case seal kit.

I hope you have an earlier model. The gaskets are widely available. I couldn't find a later model gasket kit. Good luck.
 

Lou C

Supreme Mariner
Joined
Nov 10, 2002
Messages
13,236

chriscraft7215

Recruit
Joined
May 13, 2019
Messages
2
Yes I have cone clutch. Nothing on diagrams so pretty sure didn't have one. Have OMC gasket sealing compound but failed last time might try again with it after a good stir.
 
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