Check the listing for details. BARR MC-1-866178 GM 8.1L & 8.2L Aftermarket Exhaust Manifold Mercury 866178T01. Condition: New. Listed at 660.81 USD. Barr Marine GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water rail. Can be used for the port or starboard side of the engine.Mercruiser GM V-8 Aftermarket Exhaust Manifold - 8.1L & 8.2LFits MCM/MIE 8.1L & 8.2L non‑EC enginesBarr Marine GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water railThis kit includes the exhaust manifold, the mounting bolts, and the manifold to head gasketReplaces: Mercruiser 863127T02 Replaces: Quicksilver 866178T01Barr Marine GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water rail. Can be used for the port or starboard side of the engine.Mercruiser GM V-8 Aftermarket Exhaust Manifold - 8.1L & 8.2LFits MCM/MIE 8.1L & 8.2L non‑EC enginesBarr Marine GM 8.1 and 8.2L cast iron center rise exhaust manifold without the water railThis kit includes the exhaust manifold, the mounting bolts, and the manifold to head gasketReplaces: Mercruiser 863127T02 Replaces: Quicksilver 866178T01