Mercruiser 3.0 oil pan gasket

[JimEd B]

Hey Yall,

Getting set to get this oil pan swapped on this Mercruiser 3.0LX Pan gets here next week.

Looking at gaskets, and somehow these are now running $80 a pop, $100 after shipping. Seems pretty steep for a glorified rubber band.

Is there an automotive equivalent available? I've done some wheeler builds with just RTV. Any thoughts on doing that here?

My biggest misgiving is that I intend to rebuild rotating assembly after this first season with the boat, and I'd rather peel off a new gasket than scrub off cured RTV.

But I don't bill myself at $100/hr. Any other reasons I shouldn't use RTV?

Not trying to half a$$ keeping the oil in my engine.... but I don't see how an automotive gasket designed for higher temps, dirtier and arguably wetter conditions wouldn't be adequate for my cozy bilge.

 

[Bt Doctur]

Sierra 18-1239 Oil Pan Gasket for 3.0LX Mercruiser, Volvo, OMC


Sierra high-quality engine parts are designed to meet OEM specifications. For OMC 3.0L engines.

• Fits 3.0 L/LX engines

Interchangeable with:

• Mallory
  • 9-61500
• Mercruiser Stern Drive
  • 27-810846T
  • 27-810846
• OMC Stern Drive
  • 914820
• Volvo Penta
  • 3853343

 

[JimEd B]

Exhibit A: https://www.summitracing.com/parts/fel-17952/make/chevrolet

Looks like a moot question on the automotive gasket. Ain't much cheaper.

 

[GSPLures]

I would advise against rtv, the P.O. of my boat rebuilt the lower end of the motor in my boat and used rtv. I had the motor out to do the transom and replaced all the gaskets except that one(due to price and scraping all that rtv off). Once I got it back in and started sure enough it leaked. So I have to pull my motor again to do it right

 

[Scott Danforth]

boating is the worlds most expensive hobby. It costs me more per year than my buddy that races

spend the $100 that is cheap insurance

RTV has its place, however its only a little dab at the corners of the gasket where the rear main is split.

as indicated above, you only want to do the job once

 

[nola mike]

It's always a risk/reward thing for me. 1) how much would it suck if this part failed 2) could it leave me stranded if it failed/can I fix it on the water? 3) how much of a pita is it to redo the job? 4) how big of a price difference is it?
Oil pan gasket for an extra $30 would fail all 4 of those for me...

 

[Alumarine]

I've used the Felpro 17950 in the past and they work well.

FEL-PRO 17950 Oil Pan Gasket | Shop Now at RockAuto

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Fel-Pro 17950 Fel-Pro Marine Oil Pan Gaskets | Summit Racing

Free Shipping - Fel-Pro Marine Oil Pan Gaskets with qualifying orders of $109. Shop Oil Pan Gaskets at Summit Racing.

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