--- product_id: 15267005 title: "DB Electrical 400-12303 Alternator Compatible with/Replacement For Mercury Outboard 75 90 115 225 Optimax 875286A1, 875286T, 881247A1, 889956, 19020704, Optimax 115ELPT, PROXS, 115EXLPT, 200CXL DTS" brand: "db electrical" price: "1151 zł" currency: PLN in_stock: true url: https://www.desertcart.pl/products/15267005-db-electrical-400-12303-alternator-compatible-with-replacement-for-mercury store_origin: PL region: Poland --- # 50 Amps 12 Volts Easy Install DB Electrical 400-12303 Alternator Compatible with/Replacement For Mercury Outboard 75 90 115 225 Optimax 875286A1, 875286T, 881247A1, 889956, 19020704, Optimax 115ELPT, PROXS, 115EXLPT, 200CXL DTS **Brand:** db electrical **Price:** 1151 zł **Availability:** ✅ In Stock ## Summary > ⚓ Power Up Your Adventure with Confidence! ## Quick Answers - **What is this?** DB Electrical 400-12303 Alternator Compatible with/Replacement For Mercury Outboard 75 90 115 225 Optimax 875286A1, 875286T, 881247A1, 889956, 19020704, Optimax 115ELPT, PROXS, 115EXLPT, 200CXL DTS by db electrical - **How much does it cost?** 1151 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/15267005-db-electrical-400-12303-alternator-compatible-with-replacement-for-mercury) ## Best For - db electrical enthusiasts ## Why This Product - Trusted db electrical brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted with high-quality materials for maximum durability. - • **Reliable Power:** Experience uninterrupted performance even in the toughest conditions. - • **Wide Compatibility:** Compatible with a range of Mercury Outboard models. - • **Trusted Replacement:** Replaces multiple part numbers for seamless integration. - • **Hassle-Free Installation:** Direct fit design ensures a quick and easy setup. ## Overview The DB Electrical 400-12303 Alternator is a high-performance replacement designed for Mercury Outboard engines, ensuring reliable power and easy installation. With a robust construction and compatibility with various models, this alternator is your go-to solution for maintaining optimal marine performance. ## Description DB Electrical 400-12303 Alternator Compatible with/Replacement For Mercury Outboard 75 90 115 225 Optimax 875286A1, 875286T, 881247A1, 889956, 19020704, Optimax 115ELPT, PROXS, 115EXLPT, 200CXL DTS ## Features - RELIABLE PERFORMANCE: Trust this alternator for efficient charging. Its high output and dependable design ensure reliable power, even in demanding conditions. Keep your marine vehicle running smoothly with confidence. - HIGH-QUALITY CONSTRUCTION: Our alternator is built to last with superior materials chosen for optimal performance, reliability, and durability. - EASY INSTALLATION: This alternator has direct fit design, no vehicle modifications. Simple process for quick and easy installation. Maximum output and optimal performance assured. - COMPATIBILITY: The DB Electrical 400-12303 alternator is compatible with/replacement for MERCURY MARINE Outboard 115ELPT 115EXLPT Optimax 2004-2014, 115ELPT 115EXLPT Optimax Saltwater 2004-2005, 115ELPT Pro XS Optimax 2010-2015, 125ELPT 125EXLPT Optimax - REPLACEMENT: This alternator replaces these part numbers - ARCO 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, 8M0064020 ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | DB Electrical | | Brand | DB Electrical | | Model | 400-12303 | | Item Weight | 7.7 pounds | | Product Dimensions | 4.64 x 3.82 x 4.64 inches | | Country of Origin | China | | Item model number | 400-12303 | | Manufacturer Part Number | 400-12303 | | OEM Part Number | ADR0318 | | Amperage | 50 Amps | | Voltage | 12 Volts | ## Images ![DB Electrical 400-12303 Alternator Compatible with/Replacement For Mercury Outboard 75 90 115 225 Optimax 875286A1, 875286T, 881247A1, 889956, 19020704, Optimax 115ELPT, PROXS, 115EXLPT, 200CXL DTS - Image 1](https://m.media-amazon.com/images/I/71Hf0ouCLdS.jpg) ## Questions & Answers **Q: Do I need a new altenator? How do I to determine if my 2004 75 hp 4 stroke mercury outboard is charging my new batteries? We bought new batteries (ENGINE and Trolling) last year and they won't start the mercury engine afte an hour of fishing.** A: Below is instructions on how to check your alternator:1. Check the battery Before you can tell if your alternator is working correctly, you need to see what's going on with your car battery. With the engine off, connect the positive side of your voltage meter or multi-meter to the positive terminal of your battery, and the negative side to the negative terminal. The reading should be about 12.7 volts. If it is below 12.4 volts, the battery may need replacing.2) Check the alternator voltage Turn on your engine, but don't press the gas. When the engine is on, the alternator is supposed to send electricity to the battery. Check your voltmeter or multi-meter again and read the voltage. If your alternator is working, the voltmeter should read between 13.8 and 14.2 volts.3) Check the alternator amperage Disconnect the voltmeter and connect an amperage meter (if you aren't using a multi-meter) to your battery the same way as you connected the voltmeter. Turn on all the electrical equipment in the car: lights, stereo, wipers and everything else you can. Let the engine idle at around 1200 rpm. Check your car's manual or parts manual to see what your alternator's maximum amperage should be. The amp reading on your meter should be near the maximum output. A 90-amp alternator will output approximately 88 amps. If your amperage is too low, then you probably need a new alternator. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/15267005-db-electrical-400-12303-alternator-compatible-with-replacement-for-mercury](https://www.desertcart.pl/products/15267005-db-electrical-400-12303-alternator-compatible-with-replacement-for-mercury) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-24*