Yamaha - Manifold 1 - 6H4-13641-00-94 MerCruiser-5-7L-TKS-MIE--Towsports-2022 If your bow deck is

If your bow deck is completely sealed with foam or has no access ports

and most owners apply it themselves with no trouble

it’s one of the most important routine maintenance parts for cooling systems

but it’s what keeps you informed before things get expensive

Yamaha - Manifold 1 - 6H4-13641-00-94 MerCruiser-5-7L-TKS-MIE--Towsports-2022 If your bow deck isThis product has been superseded by: 6H4 13641 01 94 6H4 13641 00 94 MANIFOLD 1WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.