882437 Mercruiser Fuel Leak Off Pipe | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 1.7L Diesel Injector Leak-Off Pipe - Part Number: 882437

A genuine used fuel-return pipe for MerCruiser and Cummins MerCruiser 1.7L Isuzu-based diesel engines.

The pipe forms part of the injector nozzle leak-off circuit. It collects excess diesel from the mechanical injector assemblies and returns it through the low-pressure side of the fuel system.

⚙️ Key Features

• Genuine MerCruiser diesel leak-off pipe
• Correct Mercury reference 882437
• Connects the injector nozzle return circuit
• Designed for the Isuzu-based 1.7L diesel
• Used with injectors 882555 and companion return pipe 882568

🚤 Compatibility

Commonly used on

• MerCruiser D1.7L DTI sterndrive engines
• Cummins MerCruiser CMD 1.7 MI inboard engines
• Isuzu-based mechanical diesel injection systems

Typically suits

• Engine models:
• MerCruiser D1.7L DTI - serial 0M055000 through 0M999999
• Cummins MerCruiser CMD 1.7 MI 120 - serial 88109041 and up
• MerCruiser 1.7 MS 120 installations using the same injection system
• HP Range: Approximately 120HP
• Engine Type: 1.7L inline four-cylinder turbo-diesel
• Year Range: Approximately late-1990s through mid-2000s

🔌 Function

The pipe carries the small quantity of diesel that bypasses the injector nozzle assemblies back into the fuel-return circuit.

⚠️ Common Signs of Failure

• Diesel leakage around an injector
• Strong diesel smell in the engine compartment
• Air enters the return circuit
• Pipe is cracked or vibration-fatigued
• Banjo or sealing washers leak
• Engine becomes difficult to bleed after service
• Fuel collects around the cylinder head

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 882437 original Mercury nozzle leak-off pipe reference

OEM / Related Numbers

• 882437
• Companion leak-off pipe: 882568
• Injection nozzle: 882555
• Leak-off gasket: 882497
• Injector gasket: 882488
• Injector seal gasket: 882418
• Return hose: 882600
• Pipe clip: 882737
• Pipe clip: 882738

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

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