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862083 Mercruiser Pulley Assy | Genuine Used Part

862083 Mercruiser Pulley Assy | Genuine Used Part

$105.00 AUD
$105.00 AUD
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Low stock: 1 left

🔧 Product Description

Genuine MerCruiser Serpentine Idler Pulley Adjustment Assembly - Part Number: 862083

A genuine used MerCruiser idler-pulley and adjustment assembly for selected GM-based petrol marine engines.

The assembly guides and tensions the serpentine accessory belt, maintaining correct belt contact around the alternator, circulating-water pump, power-steering pump and crankshaft pulleys.

⚙️ Key Features

  • Genuine used MerCruiser OEM idler assembly
  • Original part number 862083
  • Related service reference 862083T
  • Works with current pulley reference 807757T
  • Used in MerCruiser serpentine accessory-drive systems

🚤 Compatibility

Commonly used on

  • MerCruiser GM V6 and small-block V8 serpentine-belt systems
  • Accessory drives equipped with alternator, water pump and power steering

Typically suits

  • Engine models:
  • MerCruiser 4.3L V6
  • MerCruiser 4.3L EFI
  • MerCruiser 4.3L MPI
  • MerCruiser 5.0L carburetted V8
  • MerCruiser 5.0L EFI V8
  • MerCruiser 5.0L MPI V8
  • MerCruiser 5.7L V8
  • MerCruiser 350 MAG
  • MerCruiser 350 MAG MPI
  • MerCruiser 350 MAG Horizon
  • MerCruiser 6.2L MPI
  • MerCruiser 377 MAG MPI
  • Engine Type: MerCruiser GM V6 and small-block V8 petrol sterndrive / inboard
  • Year Range: Approximately mid-1990s through the 2000s
  • System Type: Serpentine-belt idler and adjustment assembly

🔌 Function

The assembly guides the serpentine belt and allows belt tension to be set so all front-engine accessories are driven without slipping.

⚠️ Common Signs of Failure

  • Idler bearing produces a rumbling or squealing noise
  • Pulley has side-to-side movement
  • Serpentine belt runs off-centre
  • Belt tension cannot be maintained
  • Pulley surface is damaged or heavily worn
  • Adjustment bracket is bent or seized

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 807757T later idler-pulley service reference
  • 862083T later adjustment-bracket service reference
  • 862083 earlier pulley and adjustment assembly reference

OEM / Related Numbers

  • 862083
  • 862083T
  • 807757T
  • 807757
  • 862055 related alternator bracket
  • 862056 related accessory bracket

Aftermarket / Verified Equivalents

  • No aftermarket equivalent

📦 Condition

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