---
product_id: 484800045
title: "Total Power Parts 400-12303 12V Alternator Compatible with/Replacement for Mercury Marine 200CXL DTS Optimax 2005-2009 200CXL Optimax Saltwater 2000-2005 200CXXL Bluewater Optimax 1999 Marine"
brand: "total power parts"
price: "$428.84"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/484800045-total-power-parts-400-12303-12v-alternator-compatible-with-replacement
store_origin: US
region: United States of America
---

# 50 Amps Power Output Clockwise Rotation S4 Pulley Class Total Power Parts 400-12303 12V Alternator Compatible with/Replacement for Mercury Marine 200CXL DTS Optimax 2005-2009 200CXL Optimax Saltwater 2000-2005 200CXXL Bluewater Optimax 1999 Marine

**Brand:** total power parts
**Price:** $428.84
**Availability:** ✅ In Stock

## Summary

> ⚓ Power your marine adventures with confidence and precision!

## Quick Answers

- **What is this?** Total Power Parts 400-12303 12V Alternator Compatible with/Replacement for Mercury Marine 200CXL DTS Optimax 2005-2009 200CXL Optimax Saltwater 2000-2005 200CXXL Bluewater Optimax 1999 Marine by total power parts
- **How much does it cost?** $428.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/484800045-total-power-parts-400-12303-12v-alternator-compatible-with-replacement)

## Best For

- total power parts enthusiasts

## Why This Product

- Trusted total power parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** At just 9 pounds and compact dimensions, it fits easily without adding bulk to your setup.
- • **Reliable 12V Power Boost:** Delivers a steady 50 amps to keep your marine engine charged and running smoothly.
- • **1-Year Worry-Free Warranty:** Confidence backed by a full year replacement guarantee for peace of mind on every voyage.
- • **Durable Saltwater-Ready Design:** Built to withstand harsh marine environments, perfect for saltwater Optimax engines.
- • **Precision Fit for Mercury Marine:** Seamlessly replaces multiple OEM parts ensuring hassle-free installation and compatibility.

## Overview

The Total Power Parts 400-12303 is a 12V, 50 Amp alternator designed specifically for Mercury Marine Optimax engines from 1998 to 2014. Featuring clockwise rotation, S4 pulley class, and an internal regulator, it offers a direct OEM replacement with robust saltwater durability. Lightweight and compact, it ensures reliable power delivery with a 1-year warranty, making it the go-to choice for professional boaters seeking dependable performance.

## Description

**Verify part fits before purchasing**Specs:Unit Type: AlternatorVoltage: 12Rotation: CWAmperage: 50Clock: 9Pulley Class: S4Regulator: IRFan Type: IFReplaces OEM Numbers: ARCO MARINE: 20850ARROWHEAD: 400-12303DELCO: 19020704, 19020707EMP PARTS: 4-6455J & N: 400-12155, 400-12303LESTER: 8471MERCURY MARINE: 875286A1, 875286T, 881247A1, 889956SIERRA MARINE: 18-6455Compatible With/Replacement For: MERCURY MARINE: 115ELPT Optimax 2004-2014, 115ELPT Optimax Saltwater 2004-2005, 115ELPT Pro XS Optimax 2010-2014, 115EXLPT Optimax 2004-2014, 115EXLPT Optimax Saltwater 2004-2005, 125ELPT Optimax 2010-2014, 125EXLPT Optimax 2010-2014, 200CXL Bluewater Optimax 1999, 200CXL DTS Optimax 2005-2009, 200CXL Optimax 2006-2014, 200CXL Optimax Saltwater 2000-2005, 200CXL OS Optimax 1998, 200CXXL Bluewater Optimax 1999, 200CXXL Optimax Saltwater 2000-2002, 200CXXL OS Optimax 1998, 200L DTS Optimax 2005-2009, 200L Optimax 1998-2009, 200L Pro XS Optimax 2010-2014, 200XL Bluewater Optimax 1999, 200XL DTS Optimax 2006-2009, 200XL DTS Saltwater Optimax 2005, 200XL Optimax 2002-2014, 200XL Optimax Saltwater 2000-2001, 200XL OS Optimax 1998, 200XXL Bluewater Optimax 1999, 200XXL Optimax Saltwater 2000-2002, 200XXL OS Optimax 1998, 225 Pro XS Optimax 2005-2011, 225 Pro XS XL Optimax 2006-2011, 225CXL Bluewater Optimax 1999, 225CXL DTS Optimax 2006-2009, 225CXL DTS Optimax Saltwater 2004-2005, 225CXL Optimax 2006-2012, 225CXL Optimax Saltwater 2000-2005, 225CXL OS Optimax 1998, 225CXL Saltwater EFI 2001-2004, 225CXXL Bluewater Optimax 1999, 225CXXL DTS Optimax 2006-2008, 225CXXL DTS Optimax Saltwater 2004-2005, 225CXXL DTX Optimax 2009, 225CXXL Optimax 2006-2010

## Features

- Spec: Unit Type: Alternator, Voltage: 12, Rotation: CW, Amperage: 50, Clock: 9, Pulley Class: S4, Regulator: IR, Fan Type: IF
- Replaces OEM Numbers: ARC -MARINE: 20850, ARROWHEAD: ADR0318, DELCO: 19020704, 19020707, EMP PARTS: 4-6455, J & N: 400-12155, 400-12303, LESTER: 8471, MERCURY MARINE: 875286A1, 875286T, 881247A1, 889956, SIERRA MARINE: 18-6455
- Compatible With/Replacement For: MERCURY MARINE: 115ELPT Optimax 2004-2014, 115ELPT Optimax Saltwater 2004-2005, 115ELPT PrXS Optimax 2010-2014, 115EXLPT Optimax 2004-2014, 115EXLPT Optimax Saltwater 2004-2005, 125ELPT Optimax 2010-2014, 125EXLPT Optimax 2010-2014, 200CXL Bluewater Optimax 1999, 200CXL DTS Optimax 2005-2009, 200CXL Optimax 2006-2014
- 1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement.
- 100% New aftermarket Alternator Compatible with/Replacement for for Mercury Marine

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Total Power Parts |
| Brand | Total Power Parts |
| Model | 400-12303 |
| Item Weight | 9 pounds |
| Product Dimensions | 8.5 x 7.5 x 7.1 inches |
| Item model number | 400-12303 |
| Manufacturer Part Number | 400-12303 |
| OEM Part Number | 1-2486-01DR 18-6455 19020704 19020707, 240-6318 3201M 400-12155 400-12303, 42950 4-6455 47-2961 5SI 70-01-8471, 8471 8471N 875286A1 875286T 881247A1, 889956 90-01-4430 9-19201 A-1666 |
| Amperage | 50 Amps |
| Voltage | 12 Volts |

## Images

![Total Power Parts 400-12303 12V Alternator Compatible with/Replacement for Mercury Marine 200CXL DTS Optimax 2005-2009 200CXL Optimax Saltwater 2000-2005 200CXXL Bluewater Optimax 1999 Marine - Image 1](https://m.media-amazon.com/images/I/71osMXGcNrL.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-21*