MerCruiser Sierra 18-1952-1 99746A8 3.8L 4.3 4.3LX V6 Exhaust Manifold 1983-97 35hp Allegedly there were 3 different

Allegedly there were 3 different types and they don't supesede eachother

(198 MIE (2 BBL

12" X 10 1/2"P

Trim switch is tested & working

Used on various models 1997-2005

MerCruiser Sierra 18-1952-1 99746A8 3.8L 4.3 4.3LX V6 Exhaust Manifold 1983-97 35hp Allegedly there were 3 differentItem Details Sierra 18 1952 1 Exhaust Manifold Replaces MerCruiser Part Number 99746A3 > 99746A8 > 99746A17 Can Be used on Port or Starboard Side No Cracks or Welds Original Paint You will need to use your existing petcock drain plug (The blue one that would have the wings on it) for the plastic elbow still installed on this This has the water fitting that could be configured for the PORT or STARBOARD side Generally found on various MerCruiser GM 3.