Description
Premium Replacement Alternator with Single Groove Pulley – 12V, 55A
Premium replacement alternator that will fit late model Mercruiser, 12 Volt, 55 Amp, Internal regulator. 2-inch mounting foot. Single groove pulley included.
Features:
- All alternators are engineered for performance and reliability
- All alternators are engineered and manufactured with precision and quality
- All alternators must meet or exceed OEM performance before being boxed
Warranty Information:
When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications.
Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration
Replaces:
MARINE POWER Alternator 1210-000
MERCURY Alternator 12449
MERCURY Alternator 78403A1
MERCURY Alternator 78403A2
MERCURY Alternator 817119A1
MERCURY Alternator 817119A4
MERCURY Alternator 92497A3
MERCURY Alternator 98555
MERCURY Alternator 98555A1
SIERRA Alternator 18-5957
SIERRA Alternator 18-5966
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
Specifications:
- Amperage: 55A
- Voltage: 12v
- Box Dimensions: 7″H x 8″W x 8″L WT: 9.75 lbs
- UPC: 693006001258
Quick Guide (pdf).embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
Explore more from our collection.
![Arco Marine Premium Replacement Alternator W/Single Groove Pulley - 12V, 55A [60050] 1](https://carpartsunited.shop/wp-content/uploads/2026/05/arco-marine-premium-replacement-alternator-w-single-groove-pulley-12v-55a-60050-1-01.webp)
![Arco Marine Premium Replacement Alternator W/Single Groove Pulley - 12V, 55A [60050] 2](https://carpartsunited.shop/wp-content/uploads/2026/05/arco-marine-premium-replacement-alternator-w-single-groove-pulley-12v-55a-60050-2-02.webp)
![Balmar Pulley Kit F/Yanmar 4Jh3-Te, 4Jh3-Hte [48-Ysp-4Jh-D] 1](https://carpartsunited.shop/wp-content/uploads/2026/05/balmar-pulley-kit-f-yanmar-4jh3-te-4jh3-hte-48-ysp-4jh-d-1.webp)
![Arco Marine Zeus A8000-48V 8Kw Vortec Alternator W/Isolated Ground [4609] 1](https://carpartsunited.shop/wp-content/uploads/2026/05/arco-marine-zeus-a8000-48v-8kw-vortec-alternator-w-isolated-ground-4609-1-01.webp)
![Balmar Yanmar Pulley Kit F/4Jh, 4Jhe, -Te, -Hte, -Dte [48-Ysp-4Jh-F] 1](https://carpartsunited.shop/wp-content/uploads/2026/05/balmar-yanmar-pulley-kit-f-4jh-4jhe-te-hte-dte-48-ysp-4jh-f-1.webp)
Reviews
There are no reviews yet.