882558 Mercruiser Duct Intake | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 1.7L Diesel Intake Turbo Duct - Part Number: 882558

A genuine used intake duct for the turbocharger and air-cooler system on MerCruiser and Cummins MerCruiser Diesel 1.7L 120HP engines.

The moulded duct connects sections of the intake and turbo system, carrying charge air between the turbocharger, cooler and intake manifold. Mercury catalogues describe it as the intake-turbo duct.

⚙️ Key Features

• Genuine Mercury MerCruiser intake duct
• Correct part number 882558
• Used on the 1.7L 120HP marine diesel
• Moulded engine-specific charge-air passage
• Fits D1.7L DTI and CMD 1.7L engines

🚤 Compatibility

Commonly used on

• MerCruiser D1.7L DTI turbo systems
• CMD 1.7 MI 120
• CMD 1.7 MS 120
• Isuzu-derived 1.7L marine diesel air-cooler systems

Typically suits

• MerCruiser D1.7L DTI - serial 0M055000 through 0M999999
• CMD 1.7 MI 120 - serial 88109041 and above
• CMD 1.7 MS 120 - serial 8810800 and above
• HP Range: 120HP
• Engine Type: 1.7L inline-four turbocharged marine diesel
• Fitment Requirement: Confirm hose ends, clamp positions and air-cooler layout

🔌 Function

The duct carries pressurised intake air through the turbocharger and charge-air system.

⚠️ Common Signs of Failure

• Split or cracked duct
• Boost leak and reduced engine power
• Oil mist around joints
• Loose or corroded hose clamps
• Whistling or hissing under load

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 882558 established Mercury intake-turbo duct reference
• No confirmed supersession

OEM / Related Numbers

• 882558
• Mercury description: Duct, Intake, Turbo
• 882553 related intake manifold
• 882586 related turbocharger air duct
• 815504220 related worm-gear hose clamp
• 882578 related intake hose
• Air-cooler and turbocharger-system diagram reference

Aftermarket / Verified Equivalents

• No direct aftermarket duct verified
• Used genuine Mercury ducts are the closest replacement
• Custom fabricated charge-air pipework may be possible but is not a plug-in equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated