27-864850A02 Aftermarket Mercruiser Exhaust Elbow Gasket | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercruiser Exhaust Elbow Gasket - Part Number: 27-864850A02

A dry-joint restrictor gasket for MerCruiser GM V6 and V8 exhaust elbows introduced in 2002. The calibrated water passage controls coolant flow between the manifold and elbow, so the correct gasket position and restriction pattern are essential.

⚙️ Key Features

• Dry-joint restrictor gasket

• For 2002-and-later MerCruiser V6/V8 exhaust systems

• Controls cooling-water flow through the elbow joint

• Direct replacement for the 864850A02 family

• Sierra 18-0722 cross-reference

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 27-864850A02 → Later restrictor gasket in the 864547 / 864850 service family

OEM / Related Numbers:

• 27-864850A02

• 27-684547A02

• 27-864547A02

• 27-864549A02

• 27-864550A02

• 864547A02

• 864850A1

Aftermarket / Verified Equivalents:

• Sierra: 18-0722

🚤 Compatibility

Commonly used on:

• MerCruiser dry-joint exhaust manifolds and elbows

Typically suits:

• Engine models:

• 4.3L V6 Alpha, Bravo and MPI dry-joint engines from 2002

• 5.0L MPI 2002-2004, serial 0M600000-0W309999

• 5.0L MPI 2004-2008, serial 0W310000 and later

• 5.7L Ski 2002-2016, serial 0M317000 and later

• Black Scorpion Ski 2003-2007, serial 0M391600-0W698432

• Scorpion 350 2008-2016, serial 0W698433 and later

• 377 MAG 2008-2016, serial 1A300000 and later

• MX6.2 MPI 2002-2004, serial 0M600000-0W309999

• MX6.2 MPI 2004-2007, serial 0W310000-1A299999

• MX6.2 MPI MIE 2002-2016, serial 0M317000 and later

• MX6.2 MPI Ski 2002-2007, serial 0M317000-1A089999

• Scorpion 377 2008-2016, serial 0W698433 and later

• Engine Type: GM 4.3L V6 and 5.0L/5.7L/6.2L V8 petrol marine engines

• Joint Type: MerCruiser dry joint

• Year Range: approximately 2002 onward

🔌 Function

The restrictor gasket seals the dry joint and meters cooling-water flow through the exhaust manifold and elbow passages.

Common signs of failure:

• Black soot tracking around the joint

• Cooling-water seepage or salt deposits at the flange

• Exhaust smell or fumes in the engine compartment

• Burnt, split, crushed or hardened sealing material

• Corrosion or erosion of the mating faces

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging