42969A3 Mercury Attenuator Cover | Genuine Used Part

🔧 Product Description

Genuine Mercury Three-Cylinder Carburettor Attenuator Cover - Part Number: 42969A3

A genuine used Mercury Marine air-silencer and sound-attenuator cover for selected 65 Jet, 70HP, 75HP, 80HP and 90HP three-cylinder two-stroke outboards.

The cover fits over the carburettor attenuator plate, reducing induction noise and helping protect the carburettor throats from loose debris within the engine cowling.

⚙️ Key Features

• Genuine used Mercury Marine attenuator cover
• Current OEM assembly number 42969A3
• Used with attenuator plate 42970A2
• Fits inline three-cylinder carburetted engines
• Covers all three vertically mounted carburettors

🚤 Compatibility

Commonly used on

• Mercury and Mariner inline three-cylinder carburettor assemblies
• Air-silencer and sound-attenuator systems

Typically suits

• Engine models:
• Mercury / Mariner 70HP three-cylinder
• Mercury / Mariner 75HP three-cylinder
• Mercury / Mariner 80HP three-cylinder
• Mercury / Mariner 90HP three-cylinder
• Mercury 65 Jet using the three-cylinder powerhead
• 1987-1993 three-cylinder carburettor assemblies
• Later 75HP and 90HP applications using attenuator cover 42969A3
• Serial groups including 0D283222 through 0G760299 and selected later production
• HP Range: 65 Jet / 70HP - 90HP
• Engine Type: Mercury / Mariner inline three-cylinder carburetted two-stroke outboard
• Year Range: Approximately 1987-2006

🔌 Function

The attenuator cover encloses the carburettor air-inlet area to reduce induction noise and maintain a controlled, protected air path into the carburettors.

⚠️ Common Signs of Failure

• Cover is cracked or missing
• Mounting tabs are broken
• Induction noise becomes noticeably louder
• Cover vibrates against the carburettors
• Debris can enter the carburettor throat area
• Cover or plate does not seal evenly
• Fasteners no longer hold the assembly securely

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 42969A3 later attenuator-cover assembly
• 42969A2 earlier assembly reference
• 42969A1 earlier assembly reference
• 42969T earlier cover reference

OEM / Related Numbers

• 42969A3
• 42969A2
• 42969A1
• 42969T
• 42970A2 related attenuator plate assembly
• 429705 related earlier plate
• 42970T1 related plate reference
• 42970T related plate reference
• 43004A90 related carburettor gasket set

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Attenuator plate included only where shown or stated
• Removed from running engine where applicable
• In good working condition unless otherwise stated