exhaust watter flapper help

S

starcraftcr

Recruit
Joined
Jun 29, 2010
Messages
5
I have a i/o that I cant seem to get the right water flapper for. it is a mercruiser 140 serial#5419985. the flapper I got is sierra #18-2727, however this is too big to fit into the pipe. the rod that came out is 2 1/8 inches long and the new part is 3 inches long.
question 1: any ideas on proper part #?
question 2: is this part absolutly needed? the boat is trailered and never stays in the water.
 
NHGuy

NHGuy

Captain
Joined
May 21, 2009
Messages
3,631
Re: exhaust watter flapper help

Yup, you need it. I'd recommend looking up the Mercruiser part number, then either cross it to Sierra or just get the OE part. BTW the replacement part probably looks different. On my 88 5.7 they were very different.
 
S

stonyloam

Vice Admiral
Joined
Mar 13, 2009
Messages
5,827
Re: exhaust watter flapper help

starcraftcr said:
I have a i/o that I cant seem to get the right water flapper for. it is a mercruiser 140 serial#5419985. the flapper I got is sierra #18-2727, however this is too big to fit into the pipe. the rod that came out is 2 1/8 inches long and the new part is 3 inches long.
question 1: any ideas on proper part #?
question 2: is this part absolutly needed? the boat is trailered and never stays in the water.
Click to expand...

1: for your SN should be this one #7 http://www.mercruiserparts.com/Show...nbr=1058&bnbr=19&bdesc=EXHAUST+ELBOW+ASSEMBLY

2: yes

This is a good reference for your engine: http://www.mercruiserparts.com/selectSerailRange.asp?doc_nbr=140+++++GM+181+I/L4+1979-1982
 
You must log in or register to reply here.
Top