I am lost with this rear main seal!!!

[RNunnelly]

Hello all, ok so I have a 1986 sea ray it came with a cracked block mercuries 140, at the end of last season I found a merceuiser 120 that I bought, it needed a rear main seal, so I bought a gasket kit, took it apart today and found out the seal is wrong, also noticed the oil pan looks to be the same as the 140 but has a few more bolts near the front of the motor, the part number for the seal I bought is 814622. But it looks totally different than what I need please any info would be great

 

[wrench 3]

Do you have a serial number for the 120?
Is that a one piece seal or a two piece?

 

[RNunnelly]

Two piece, and tag on block ses 1829652

 

[Bt Doctur]

There shoud be a tag just above the starter with a number
Parts for MerCruiser 3.0L GM 181 I/L4 1987-1989 CYLINDER BLOCK, PISTON AND BEARINGS (140-3.0L/181 CID)
YOU ARE HERE: MERCRUISER > 3.0L GM 181 I/L4 1987-1989 > 0B450801 THRU 0C856558 () > CYLINDER BLOCK, PISTON AND BEARINGS (140-3.0L/181 CID)

 

[RNunnelly]

This number is stamped on the block F04286R

 

[Bt Doctur]

your block number comes back as this and that is the number of the seal used.

• 1666601 THRU 3377340 ()

Revise Search: Start Over > Different Engine Model YOU ARE HERE: MERCRUISER > 120 GM 153 I/L4 1964-1972

 

[RNunnelly]

Yes I seen that page but that seal looks wrong for some reason

 

[RNunnelly]

No Title

 

[RNunnelly]

That is what the seal looks like from the info you gave me,

 

[wrench 3]

Sorry, Sierra doesn't list a seal for that low a serial number and the number won't work on the Mercury parts site. You could try taking the old seal into an automotive supply store. The basic engine is the same as an older GM 2.5L automotive engine.

 

[RNunnelly]

No Title

This is what mines looks like now

 

[RNunnelly]

That was my plan for tomorrow to tank it to a parts store

 

[Bt Doctur]

YOU ARE HERE: MERCRUISER > 110 GM 153 I/L4 1963-1966 > 1537370 THRU 2044033 () > CYLINDER BLOCK, PISTON AND CRANKSHAFT
That seal with the wings shows up in this year but is listed as NLA 26-34462, later years use the one you have.

 

[Bt Doctur]

wrench, site lists it as 26-58203
26- 814622
sierra 18-1211

 

[RNunnelly]

Yes it does say that but that seal looks wrong

 

[oldjeep]

Yes it does say that but that seal looks wrong

Wrong in that it doesn't look like what you pulled out? I wouldn't be surprised if they changed the design a little so that those 2 piece seals seal together a bit better.

 

[RNunnelly]

No Title

 

[RNunnelly]

No Title

 

[RNunnelly]

I searched on google, jeep 2.5 rear main seal and it came up with this part number BS40612 and It looks just like the seal I need. odd

 

[RNunnelly]

http://www.ebay.com/itm/like/151626566972?lpid=82&chn=ps

this really looks like it