# ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050]

**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)](https://productimageserver.com/literature/quickGuide/97202QG.pdf)

## Details

- **Price:** 275.18 USD
- **Type:** Alternators
- **Tags:** Brand_ARCO Marine, Clearance, Engine Parts & Service, Engine Parts & Service | Alternators, Specials

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 275.18 USD | In stock |

## Images

- ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050] ARCO Marine
- ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050] ARCO Marine
- ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050] ARCO Marine
- ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050] ARCO Marine

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> Source: [Besafe1st](https://besafe1st.com/products/arco-marine-premium-replacement-alternator-w-single-groove-pulley-12v-55a-60050)
> Updated: 2026-06-03