Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084
Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084

Alternator for Yanmar Engine - Marine 2QM20Y 1975-1980 128170-77202 AHI0084

Item #: 400-44113

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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
Check if this fits your vehicle
HOW TO FIND YOUR FITMENT
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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: 400-44113

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Voltage12
RotationCW
DimensionReplacement Unit:, Mtg. Ear 1 Hole: M8-1.25 Threaded, Mtg. Ear 2 Hole: 8.6mm Unthreaded, Mtg. Ear 3 Hole: 8.2mm Unthreaded, B+ Terminal: M5-0.8, E Terminal: M5-0.8, P Terminal: Female Bullet, Polarity: Negative,
Amperage35
Clock2
Pulley Class1V
RegulatorIR
Fan TypeEF
FitsYanmar Marine and Industrial Engines
1-V PULLEY 72mm OD

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
YanmarEngine - Marine1GM19801cyl 19.41ci 0.318L
YanmarEngine - Marine1GM19811cyl 19.41ci 0.318L
YanmarEngine - Marine1GM19821cyl 19.41ci 0.318L
YanmarEngine - Marine1GM19831cyl 19.41ci 0.318L
YanmarEngine - Marine1GM19841cyl 19.41ci 0.318L
YanmarEngine - Marine1GM1019801cyl 19.41ci 0.318L
YanmarEngine - Marine1GM1019811cyl 19.41ci 0.318L
YanmarEngine - Marine2GM19802cyl Diesel
YanmarEngine - Marine2GM19812cyl Diesel
YanmarEngine - Marine2GM19822cyl Diesel
YanmarEngine - Marine2GM19832cyl Diesel
YanmarEngine - Marine2GM19842cyl Diesel
YanmarEngine - Marine2GMF19802cyl Diesel
YanmarEngine - Marine2GMF19812cyl Diesel
YanmarEngine - Marine2GMF19822cyl Diesel
YanmarEngine - Marine2GMF19832cyl Diesel
YanmarEngine - Marine2GMF19842cyl Diesel
YanmarEngine - Marine2QM1519772cyl 0.662L Diesel
YanmarEngine - Marine2QM1519782cyl 0.662L Diesel
YanmarEngine - Marine2QM1519792cyl 0.662L Diesel
YanmarEngine - Marine2QM1519802cyl 0.662L Diesel
YanmarEngine - Marine2QM20Y19752cyl 1.094L Diesel
YanmarEngine - Marine2QM20Y19762cyl 1.094L Diesel
YanmarEngine - Marine2QM20Y19772cyl 1.094L Diesel
YanmarEngine - Marine2QM20Y19782cyl 1.094L Diesel
YanmarEngine - Marine2QM20Y19792cyl 1.094L Diesel
YanmarEngine - Marine2QM20Y19802cyl 1.094L Diesel
YanmarEngine - Marine3GM19803cyl Diesel
YanmarEngine - Marine3GM19813cyl Diesel
YanmarEngine - Marine3GM19823cyl Diesel
YanmarEngine - Marine3GM19833cyl Diesel
YanmarEngine - Marine3GM19843cyl Diesel
YanmarEngine - Marine3GMDAll3cyl Diesel
YanmarEngine - Marine3GMFAll3cyl Diesel
YanmarEngine - Marine3HM19803cyl Diesel
YanmarEngine - Marine3HM19813cyl Diesel
YanmarEngine - Marine3HM19823cyl Diesel
YanmarEngine - Marine3HM19833cyl Diesel
YanmarEngine - Marine3HM19843cyl Diesel
YanmarEngine - Marine3HMF19803cyl Diesel
YanmarEngine - Marine3HMF19813cyl Diesel
YanmarEngine - Marine3HMF19823cyl Diesel
YanmarEngine - Marine3HMF19833cyl Diesel
YanmarEngine - Marine3HMF19843cyl Diesel

Replaces These Part Numbers

ARROWHEADAHI0084
CARGO112270
EMP PARTS4-6928
HITACHILR135-74, LR135-74B
J&N Electrical Products400-44113
LESTER12108
QUICKSILVER8M6007515
YANMAR128170-77200, 128170-77201, 128170-77202

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

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