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861443 Mercruiser Flame Arrestor | Genuine Used Part

861443 Mercruiser Flame Arrestor | Genuine Used Part

$150.00 AUD
$150.00 AUD
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🔧 Product Description

Genuine MerCruiser MPI Flame Arrestor - Part Number: 861443T

A genuine used MerCruiser flame arrestor for selected GM small-block V8 multi-port fuel-injection engines.

The arrestor mounts over the MPI throttle-body inlet and is used on early 350 MAG MPI and MX 6.2L MPI engine families. It allows the required intake airflow while helping contain flame if an intake backfire occurs.

⚙️ Key Features

  • Genuine Mercury MerCruiser OEM flame arrestor
  • Correct Mercury part number 861443T
  • Designed for selected multi-port fuel-injection engines
  • Used on GM 350 CID and 377 CID small-block V8 applications
  • Marine-rated intake backfire protection

🚤 Compatibility

Commonly used on

  • Early MerCruiser MPI small-block V8 intake systems
  • GM 350 CID and 377 CID multi-port fuel-injection engines

Typically suits

  • Engine models:
  • MerCruiser 350 MAG MPI 5.7L V8 - 1999-2001, serial 0L340000 to 0M299999
  • MerCruiser 350 MAG MPI Horizon MIE - 1999-2001, serial 0L304700 to 0M299999
  • MerCruiser 350 MAG MPI MIE - 1999-2001, serial 0L304500 to 0M299999
  • MerCruiser MX 6.2L MPI 377 CID V8 - 2000-2001, serial 0L680003 to 0M299999
  • HP Range: Engine-family controlled
  • Engine Type: MerCruiser GM 5.7L / 6.2L small-block V8 MPI
  • Year Range: Approximately 1999 - 2001

🔌 Function

The flame arrestor supplies filtered intake airflow to the throttle body while helping prevent an intake backfire from propagating into the engine compartment. It must remain clean and securely mounted.

⚠️ Common Signs of Failure

  • Arrestor mesh is crushed or separated
  • Heavy oil contamination restricts airflow
  • Mounting flange is cracked or distorted
  • Arrestor is loose on the throttle-body opening
  • Backfire protection is no longer reliable

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 861443T current known OEM service reference
  • 861443 original OEM base reference

OEM / Related Numbers

  • 861443T
  • 861443
  • 745061449770
  • MerCruiser 350 MAG MPI flame arrestor
  • MerCruiser MX 6.2L MPI flame arrestor

Aftermarket / Verified Equivalents

  • Mallory: 9-31105

📦 Condition

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