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Forum: General Q & A

04-03-2016, 03:43 PM

Replies: 12

Mercruiser 454 riser gasket question

Views: 7,669

Posted By BUP

those are NLA thru Merc and caused corrosion...

those are NLA thru Merc and caused corrosion problems because of 3 dissimilar metals.

Cast iron manifold, riser gaskets a form of other metal(s) and SS riser - all clamped together

what were...

Forum: General Q & A

04-03-2016, 12:42 PM

Replies: 12

Mercruiser 454 riser gasket question

Views: 7,669

Posted By BUP

I went thru Merc dealer site , best using the...

I went thru Merc dealer site , best using the required serial number.

It is best to always use engine serial numbers and model numbers when looking up parts and info about the year model apps...

Forum: General Q & A

04-03-2016, 12:06 PM

Replies: 12

Mercruiser 454 riser gasket question

Views: 7,669

Posted By BUP

Mercruiser per your provided serial number and...

Mercruiser per your provided serial number and model number of your engine shows an open gasket part number 863726 and I believe that crosses to Sierra 18-2849 inwhich should be an open gasket as...

Forum: General Q & A

04-03-2016, 11:08 AM

Replies: 12

Mercruiser 454 riser gasket question

Views: 7,669

Posted By BUP

you need to post your engine serial number and...

you need to post your engine serial number and year model and 100 % which app do you have ? MCM or MIE and is this a Horizon 4 sure - if so they were used for inboard apps. so is this what you have...

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