MAR076 Aftermarket Mercruiser Exhaust Elbow GM 2.5L, 3.0L & 3.0LX | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Mercruiser Exhaust Elbow GM 2.5L, 3.0L & 3.0LX - Part Number: MAR076

A replacement cast-iron exhaust elbow for MerCruiser GM 153 CID / 2.5L and 181 CID / 3.0L inline-four engines. The 12076A2 family covers the later elbow arrangement used from the 1980s onward.

⚙️ Key Features

• For GM 2.5L and 3.0L inline-four engines

• Water-jacketed cast-iron elbow

• Direct replacement for 12076A1/A2 family

• Used on 3.0 and 3.0LX exhaust systems

• Use new gasket and mounting hardware

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 12076A2 → Supersedes 12076A1

• 12076A2 → Related to 76325A2, 95864A2 and 76771A2

OEM / Related Numbers:

• MAR076

• 12076A1

• 12076A2

• 76325A2

• 95864A2

• 76771A2

• OMC 0509530

• 27-997772 gasket

Aftermarket / Verified Equivalents:

• Recmar: MAR076

• HDI Marine: HOT20975

• Osco: OSC2076

• GLM: 51160

• Sierra: 18-1972 / 18-1975-1

Included Components:

• Exhaust elbow - Part Number: 12076A2 / MAR076

• Elbow gasket - Part Number: 27-997772

• Mounting hardware - supplied according to kit configuration

🚤 Compatibility

Commonly used on:

• MerCruiser GM inline-four wet-exhaust systems

Typically suits:

• Engine models:

• MerCruiser 120HP / GM 153 CID / 2.5L, approximately 1983-1989

• MerCruiser 140HP / GM 181 CID / 3.0L, approximately 1983-1989

• MerCruiser 3.0 and 3.0LX, approximately 1990 onward

• Engine Displacement: 153 CID / 2.5L and 181 CID / 3.0L

🔌 Function

The elbow turns exhaust from the inline-four manifold and injects cooling water before discharge.

Common signs of failure:

• External corrosion, cracking or pin-hole leakage

• Internal carbon, rust or salt restriction

• Cooling water entering the manifold, turbocharger or cylinders

• Steam, reduced cooling-water discharge or an abnormally hot exhaust hose

• Loss of power caused by excessive exhaust back-pressure

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging