# 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

  

🔄 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

  

🚤 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

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 35.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Fuel Rails & Components | EFI Fuel Rail Systems

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 35.00 AUD | In stock |

## Images

- 882437 Mercruiser Fuel Leak Off Pipe | Genuine Used Part
- 882437 Mercruiser Fuel Leak Off Pipe | Genuine Used Part
- 882437 Mercruiser Fuel Leak Off Pipe | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/882437-mercruiser-fuel-leak-off-pipe-genuine-used-part)
> Updated: 2026-07-12