8630771 863077-1 Mercruiser 12v 70A Alternator | Genuine Used Part
8630771 863077-1 Mercruiser 12v 70A Alternator | Genuine Used Part
Low stock: 1 left
Couldn't load pickup availability
✓ Authorised Volvo Penta Dealer · Genuine used marine parts · Ships Australia-wide
🔧 Product Description
Genuine MerCruiser 12V 70A Marine Alternator - Part Number: 8630771
A genuine used MerCruiser marine alternator designed for selected petrol sterndrive, inboard and Mercury Racing engine applications.
This Delco-style marine alternator supplies charging current to the starting battery and onboard 12-volt electrical system while the engine is running. It uses a multi-rib serpentine pulley and marine ignition-protected construction suitable for installation in petrol-engine compartments.
⚙️ Key Features
- Genuine used MerCruiser alternator
- 12-volt nominal electrical system
- 70-amp rated output
- Six-groove serpentine-belt pulley
- Marine SAE J1171 ignition-protected alternator design
🚤 Compatibility
Commonly used on
- MerCruiser petrol sterndrive and inboard charging systems
- MerCruiser Black Scorpion and Mercury Racing engine packages
- Delco 7SI marine alternator installations using the 863077 mounting configuration
Typically suits
- Engine models:
- MerCruiser 4.3L V6 petrol engines using alternator 863077
- MerCruiser 5.0L 2BBL V8
- MerCruiser 5.0L MPI V8
- MerCruiser 5.7L V8
- MerCruiser 350 MAG
- MerCruiser 350 MAG MPI
- MerCruiser 350 MAG Horizon
- MerCruiser Black Scorpion 262HP
- MerCruiser Black Scorpion 320HP
- MerCruiser 6.2L MPI
- MerCruiser 8.1L petrol engine packages using the 863077 alternator family
- Mercury Racing 600 SCi
- Mercury Racing 662 SCi
- Mercury Racing 700 SCi
- Output: 12V / 70A
- Engine Type: MerCruiser petrol V6 and V8 sterndrive, inboard and Racing engine
- Year Range: Approximately 1998 onward, dependent on engine serial number
🔌 Function
The alternator converts engine rotation into electrical power, recharging the starting battery and supplying current to ignition, fuel-injection, instrumentation, lighting and other onboard electrical equipment.
⚠️ Common Signs of Failure
- Battery warning light remains illuminated
- Battery repeatedly loses charge during operation
- Charging voltage is below or above specification
- Lights and gauges fluctuate with engine speed
- Alternator bearing produces a grinding or squealing noise
- Pulley does not rotate smoothly
- Burned wiring, damaged terminals or overheated insulation
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 8630771 current listed OEM reference
- 863077-1 earlier formatted OEM reference
- 863077T related Mercury service reference
- 219290 earlier Mercury Marine reference
OEM / Related Numbers
- 8630771
- 863077-1
- 863077T
- 863077
- 219290
- Delco Remy: 19020611
- Delco Remy: 19020612
- Prestolite: 20115018TBA
- Lester: 8461
Aftermarket / Verified Equivalents
- Sierra: 18-6298
- DB Electrical: 400-12299
- WAI: 8461N
- Recmar: REC863077T
- Rareelectrical: 8461N
- Engine Master: EMA-863077
📦 Condition
- Genuine used part
- Removed from running engine where applicable
- In good working condition unless otherwise stated
Shipping & Delivery
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
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?
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.
Share
