Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472
Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472

Alternator for Mariner Mercury Marine Outboard FB-7B 1986-1993 828506 400-52472

Item #: 400-52472

30-DAY RETURN POLICY

If your order arrives and it’s not exactly what you want, you may return it within 30 days for a refund. We know that people sometimes order a part and then discover it’s not exactly the one they need for the repair. We understand and want to work with you. Just make sure the item is in its original packaging and in good condition free of damage.

When a returned product comes back to us, we’ll check it over to make sure it’s in ‘Like New’ condition and free from damage such as dents, scratches, cracks, abuse, defacement or indication of removed screws/fasteners or seals. Return processing may take up to 5 business days from the time your product is received by DB Electrical.

To return a product, simply click here to start the process.

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DB Electrical marine alternators excel for powering watercrafts.
  • Built to Beat the Heat: High temperature epoxy and high temperature grease withstand extreme heat
  • Heavy-duty rectifiers and high-quality regulators enhance superior charging performance
  • Plated fans, pulleys and hardware protect against rust-producing dampness
  • Marine alternators meet SAEJ1171 certification for use on boats and jet skis
  • Factory direct, money-saving alternator typically priced substantially less than OEM counterparts
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  • Product Info
  • Applications List
  • Part Replacement List
  • Policy Information
  • Reviews

Overview

DB Electrical Alternators
DB Electrical keeps watercrafts moving forward with quality aftermarket alternators. We work directly with factories to ensure each component is manufactured to our exacting quality control standards. But because there is no middleman, we can offer these exceptional-quality electrical components at low factory direct prices.

With DB Electrical alternators, you’ll get …

  • Superior Quality Every Time – Our aftermarket alternators deliver performance that’s equivalent to the original.
  • Direct-Fit OEM Replacement Parts – DB Electrical aftermarket alternators are designed for perfect fitment to replace the ones that originally came with your vehicle.
  • Engineer-Tested Excellence – Our alternators go through a rigorous testing program to ensure optimal performance. Most alternators are supplied with their final test results and performance curve.

Reasons to choose DB Electrical for your next alternator:

  • Built to Take the Heat – Most DB Electrical alternators offer high-temperature epoxy, heavy-duty rectifiers, high-quality regulators, top-quality bearings and high-temperature grease for better charging and longer life under high-heat environments.
  • Corrosion Resistance – Plated fans, pulleys and hardware offer protection against rust-producing dampness.
  • Flame Arrestor Screens – Where applicable, alternators come with these screens to meet Marine SAEJ1171 Certification as laid out by the SAE.
  • Brand New Alternator – Never settle for a secondhand one. Many places will try to sell you a used alternator for about the price we’ll sell you a new one.

The DB Electrical Advantage – 1-Year Warranty
DB Electrical delivers exceptional value for products that we stand behind with our total-confidence 1-year warranty. Yes, you have a full year to make sure your alternator meets your expectations.

Item Number: 400-52472

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Part TypeUNIT
Voltage12
RotationCW
Amperage50
RegulatorIR
FitsMERCURY MARINE
4-GROOVE PULLEY

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
MARINEREngines - Marine Outboard200 (DFI)AllAll
MARINEREngines - Marine Outboard225 (DFI)AllAll
MERCURY MARINEEngines - Marine Outboard200CXL Bluewater Optimax1999200HP
MERCURY MARINEEngines - Marine Outboard200CXL Optimax Saltwater2000200HP
MERCURY MARINEEngines - Marine Outboard200CXL OS Optimax1998200HP
MERCURY MARINEEngines - Marine Outboard200CXXL Bluewater Optimax1999200HP
MERCURY MARINEEngines - Marine Outboard200CXXL Optimax Saltwater2000200HP
MERCURY MARINEEngines - Marine Outboard200CXXL OS Optimax1998200HP
MERCURY MARINEEngines - Marine Outboard200L Optimax1998200HP
MERCURY MARINEEngines - Marine Outboard200L Optimax1999200HP
MERCURY MARINEEngines - Marine Outboard200L Optimax2000200HP
MERCURY MARINEEngines - Marine Outboard200XL Bluewater Optimax1999200HP
MERCURY MARINEEngines - Marine Outboard200XL Optimax Saltwater2000200HP
MERCURY MARINEEngines - Marine Outboard200XL OS Optimax1998200HP
MERCURY MARINEEngines - Marine Outboard200XXL Bluewater Optimax1999200HP
MERCURY MARINEEngines - Marine Outboard200XXL Optimax Saltwater2000200HP
MERCURY MARINEEngines - Marine Outboard200XXL OS Optimax1998200HP
MERCURY MARINEEngines - Marine Outboard225CXL Bluewater Optimax1999225HP
MERCURY MARINEEngines - Marine Outboard225CXL Optimax Saltwater2000225HP
MERCURY MARINEEngines - Marine Outboard225CXL OS Optimax1998225HP
MERCURY MARINEEngines - Marine Outboard225CXXL Bluewater Optimax1999225HP
MERCURY MARINEEngines - Marine Outboard225CXXL Optimax Saltwater2000225HP
MERCURY MARINEEngines - Marine Outboard225CXXL OS Optimax1998225HP
MERCURY MARINEEngines - Marine Outboard225L Optimax1998225HP
MERCURY MARINEEngines - Marine Outboard225L Optimax1999225HP
MERCURY MARINEEngines - Marine Outboard225L Optimax2000225HP
MERCURY MARINEEngines - Marine Outboard225XL Bluewater Optimax1999225HP
MERCURY MARINEEngines - Marine Outboard225XL Optimax2000225HP
MERCURY MARINEEngines - Marine Outboard225XL OS Optimax1998225HP
MERCURY MARINEEngines - Marine Outboard225XXL Bluewater Optimax1999225HP
MERCURY MARINEEngines - Marine Outboard225XXL Optimax Saltwater2000225HP
MERCURY MARINEEngines - Marine Outboard225XXL OS Optimax1998225HP

Replaces These Part Numbers

ARROWHEAD400-52472, ND101211-3380
DENSO101211-3380
LESTER12359
MERCURY MARINE828506
WAI12359N

Frequently Asked Questions

Q: Do I need a larger charge wire for a High Output unit?
A: The high amp unit will operate better than stock, but not to its full potential without a larger charge wire. It’s the same reason firetrucks do not use garden hoses. It is IMPARATIVE to have proper charge and ground cables.

Q: Does a High Amp unit cause any damage to my battery or my vehicles charging system?
A: As long as it is installed properly with battery in good condition, then no. A High Output unit works exactly like a factory unit and only produces what is being demanded. No alternator works continuously at full output. Higher amperage is not bad and will not hurt a battery, but high voltage will blow one up.

Q: Will aftermarket underdrive pulleys (crankshaft power pulley) have any effect on my alternator?
A: Yes, underdrive crankshaft pulleys slow all the components (power steering, a/c, and alternator) to provide more power to the rear wheels. In some cases, the charging systems will fall totally on the battery at idle and completely stop charging.

Q: Where is the best place to get a voltage reading of the alternator output?
A: You’ll get the most accurate voltage reading from the back of the alternator at the main charge post that runs directly to the battery. This must be done while the vehicle is running.

Q: Why is the pulley on a high amp alternator smaller than my stock pulley?
A: The smaller pulley advances the power curve of the alternator just slightly, which produces a little more amperage around the idle if needed.

Q: Will I need a smaller belt for my high amp unit?
A: This varies by application because not all belts and belt tensioners are in the same condition. The tensioner will always tell you if you need a new belt or not. If it’s in range, you will not. If it is out, you will. Generally, you will need a belt that is one inch shorter than stock. You should have no problem finding a replacement wherever you buy your parts. V belt applications simply re-adjust your belt tensions to 3/8” deflection.

Q: What is the difference between a one wire, self-exciting and a self-energizing regulator?
A: Nothing. They are all exactly the same. Different manufacturers use different terms for marketing. The only wire to hook up is the charge wire to the battery. This does require modification for the alternator charge light on the dash.

Q: My stock unit used a five-groove pulley, and you sent my high amp alternator with a 6 groove. Why and what can I do?
A: 5 groove overdrive pullies are not produced. Install the belt on the back groove of the pulley closest to the fan or body of the alternator. The fan is internal, and this application will work just fine.

Q: Can your alternator be run in dual or triple alternator applications?
A: Yes. When wired and mounted correctly, the alternator can run in either dual or triple applications.

Q: Will I need a new battery with a high amp alternator?
A: If your battery is in good condition, and in spec of its OEM rating, then no. Your battery should work equally well with either the OEM and a High Amp unit.

Customer Reviews

WARNING: California’s Proposition 65

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