• 8M0084523 Mercruiser Alternator | Genuine Used Part
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8M0084523 Mercruiser Alternator | Genuine Used Part

8M0084523 Mercruiser Alternator | Genuine Used Part

$300.00 AUD
$300.00 AUD
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✓ Authorised Volvo Penta Dealer · Genuine used marine parts · Ships Australia-wide

🔧 Product Description

Genuine MerCruiser 1.7L DTI 12V 50A Alternator - Part Number: 8M0084523

A genuine used MerCruiser alternator for Cummins MerCruiser Diesel and MerCruiser 1.7-litre DTI four-cylinder marine engines.

This Mitsubishi-style internally regulated alternator uses a six-groove serpentine pulley and produces a 50-amp output. It is fitted to MI 120 inboard, MS 120 sterndrive and D1.7L DTI Alpha engine packages.

⚙️ Key Features

  • Genuine used MerCruiser diesel alternator
  • 12-volt, 50-amp output
  • Six-groove serpentine pulley
  • Internally regulated and internally cooled design
  • Fits Isuzu-based 1.7L four-cylinder MerCruiser diesel engines

🚤 Compatibility

Commonly used on

  • Cummins MerCruiser Diesel 1.7L engine charging systems
  • Isuzu-based D1.7L DTI Alpha sterndrive and inboard installations

Typically suits

  • Engine models:
  • MerCruiser D1.7L DTI Alpha - 2001 onward
  • Cummins MerCruiser Diesel MI 120 1.7L inboard - 2004
  • Cummins MerCruiser Diesel MI 120 1.7L inboard - 2005
  • Cummins MerCruiser Diesel MS 120 1.7L sterndrive - 2004
  • Cummins MerCruiser Diesel MS 120 1.7L sterndrive - 2005
  • CMD 1.7 MI 120 L/L4
  • CMD 1.7 MS 120 L/L4
  • Output: 12V / 50A
  • Engine Type: Cummins MerCruiser Diesel / MerCruiser 1.7L four-cylinder diesel
  • Year Range: Approximately 2001-2005

🔌 Function

The alternator converts crankshaft rotation into regulated electrical current for battery charging, engine shut-down controls, instrumentation, glow-plug support circuits and onboard accessories.

⚠️ Common Signs of Failure

  • Diesel engine battery loses charge
  • Charge warning lamp remains illuminated
  • Voltage remains near battery resting voltage while running
  • Alternator bearing or pulley becomes noisy
  • Serpentine belt slips or produces black dust
  • Tachometer or charge-dependent instruments behave erratically
  • Output terminal or wiring shows signs of overheating

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 8M0084523 → Supersedes 882571
  • 882571 earlier MerCruiser alternator reference

OEM / Related Numbers

  • 8M0084523
  • 882571
  • Mitsubishi: A7TA2991
  • Isuzu: 8972477180
  • Arrowhead: AMT0204
  • Lester: 12630
  • J&N: 400-48061

Aftermarket / Verified Equivalents

  • Sierra: 18-6948
  • Recmar: REC882571
  • Marine Spare Parts: AM882571
  • DB Electrical: 400-48061
  • EMP: 4-6948
  • WAI: 12630N
  • Arrowhead: AMT0204

📦 Condition

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

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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