882544 Mercruiser Stopper | Genuine Used Part

🔧 Product Description

Genuine MerCruiser / CMD 1.7L Diesel Oil-System Stopper - Part Number: 882544

A genuine Mercury MerCruiser and Cummins MerCruiser Diesel stopper used within the oil-cooler and oil-filter assembly of selected 1.7-litre marine diesel engines.

The stopper closes or locates the specified oil-gallery passage in the cooler and filter housing. Correct sealing is essential to maintain engine-oil flow and pressure.

⚙️ Key Features

• Genuine MerCruiser / CMD lubrication-system component
• Correct part number 882544
• Used in the 1.7L oil-cooler and filter housing
• Factory-machined fit for the oil-gallery passage
• Designed for Isuzu-based marine diesel engines
• Discontinued or limited-availability OEM part

🚤 Compatibility

Documented on

• MerCruiser 1.7L DTI Alpha, serial 0M055000-0M999999
• Cummins MerCruiser Diesel 1.7 MI 120, serial 88109041 and above
• Cummins MerCruiser Diesel 1.7 MS 120, serial 8810800 and above
• Model families 4V71222ND, 4V71222PD and 4V71222TD
• Power Output: Approximately 120HP
• Engine Type: Isuzu-based inline-four turbocharged marine diesel
• Fitment Requirement: Confirm oil-cooler and filter-housing diagram

🔌 Function

The stopper seals or positions the designated oil passage so lubricating oil follows the intended route through the cooler, filter and engine galleries.

⚠️ Common Signs of Failure

• Engine oil leaks from the housing
• Oil pressure is low or unstable
• Stopper is loose, corroded or damaged
• Sealing surface is scored
• Incorrect plug dimensions restrict or bypass oil flow

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 882544 current documented stopper reference
• No direct supersession confirmed

OEM / Related Numbers

• 882544
• 10-882309 M10 x 16 flange screw
• 882545 related oil separator
• 882543 related oil-level gauge tube
• Related oil-cooler housing, filter adapter and sealing components

Aftermarket / Verified Equivalents

• Specialist used or new-old-stock 882544 stopper
• Professionally machined replacement only when dimensions, material and sealing method match exactly
• Isuzu industrial-engine equivalent may exist, but no verified direct service number was confirmed
• No verified direct aftermarket packaged equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated
• Replace any associated seal during installation