FORE & AFT MARINE
MERCRUISER EXHAUST MANIFOLDS

18-1957
REPLACES: 89011A8
WILL FIT EITHER SIDE
FITS MOST MERCRUISER (GM) BIG BLOCKS WITH CENTER RISER
Sierra exhaust manifolds, risers and elbows are 100% painted where the competition sends theirs out in primer. Exhaust manifolds, risers and elbows must be painted prior to installation to prevent rust. When the you buy a manifold from us, time spent watching paint dry is saved for other profit generating work. Also, every one of our manifolds, risers and elbows are individually packaged in Instapack, an expanding packaging foam that keeps the part from chipping and breaking during transportation. Water left in manifolds over the winter months can freeze and crack requiring replacement.
18-1957(LIST$290.00)$232.00