ROTA0765 Alternator for Caterpillar 120G 1985-1995 9760218-086
ROTA0765 Alternator for Caterpillar 120G 1985-1995 9760218-086

ROTA0765 Alternator for Caterpillar 120G 1985-1995 9760218-086

Item #: 400-52154

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DB Electrical alternators are highly engineered for excellence in performance.
  • 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
  • Most alternators are supplied with final test results and performance curve
  • Direct-fit replacement and easy installation made possible with OEM fitment specifications
  • 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 vehicles of every shape and size moving forward – from mowers, motorcycles and ATVs to automobiles, tractors, pickups and large commercial trucks. 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.
  • Depth of Inventory – Find both common and hard-to-find alternators for virtually any type of vehicle to travel over road, trail or water.
  • 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: ROTA0765

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Amperage35
Fan TypeExternal
RegulatorInternal
Voltage24

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
CaterpillarCompactor815B Soil1981-93All
CaterpillarCompactor816B Landfill1981-96All
CaterpillarCompactor836 Landfill1993-96All
CaterpillarCrawler Loader9531993-96All
CaterpillarEngine931985-87All
CaterpillarExcavator2151976-84All
CaterpillarExcavator215B1985-92All
CaterpillarExcavator215C1987-92All
CaterpillarExcavator215D1989-93All
CaterpillarExcavator2191987-92All
CaterpillarExcavator219D1989-92All
CaterpillarExcavator2251985-86All
CaterpillarExcavator225B1986-92All
CaterpillarExcavator225D1989-92All
CaterpillarExcavator2291986-89All
CaterpillarExcavator229A1986-92All
CaterpillarExcavator229D1986-91All
CaterpillarExcavator231D1989-93All
CaterpillarExcavator2351982-85All
CaterpillarExcavator235B1985-92All
CaterpillarExcavator235C1988-92All
CaterpillarExcavator235D1988-94All
CaterpillarExcavator2451982-88All
CaterpillarExcavator245B1988-92All
CaterpillarExcavator245D1989-94All
CaterpillarExcavatorE1801985-89All
CaterpillarExcavatorE2401985-90All
CaterpillarExcavatorE3001985-91All
CaterpillarExcavatorE300B1988-94All
CaterpillarExcavatorEL1801985-89All
CaterpillarExcavatorEL2401985-90All
CaterpillarExcavatorEL3001985-91All
CaterpillarExcavatorEL300B1988-94All
CaterpillarForestry LoaderFB2271983-93All
CaterpillarGrader120G1985-95All
CaterpillarGrader12G1985-95All
CaterpillarGrader130G1985-95All
CaterpillarGrader140G1985-95All
CaterpillarGrader140H1994-00All
CaterpillarGrader14G1985-00All
CaterpillarLoader Backhoe426C1997-00All
CaterpillarLoader Backhoe436C1997-99All
CaterpillarLoader9101985-89All
CaterpillarLoader9161986-92All
CaterpillarLoader9261985-87All
CaterpillarLoader9361985-87All
CaterpillarLoader966D1985-87All
CaterpillarLoader966E1987-90All
CaterpillarLoader966F1990-96All
CaterpillarLoader980C1985-92All
CaterpillarPipelayer583K1985-89All
CaterpillarPipelayer5891985-92All
CaterpillarPipelayer5911985-92All
CaterpillarScraper613C1985-93All
CaterpillarScraper6151985-87All
CaterpillarScraper615C1985-93All
CaterpillarScraper621B1985-86All
CaterpillarScraper621E1986-93All
CaterpillarScraper623B1985-86All
CaterpillarScraper627B1985-93All
CaterpillarScraper627E1985All
CaterpillarScraper627E1994-96All
CaterpillarScraper657E1985-96All
CaterpillarSkid Steer Loader2271986-92All
CaterpillarSkid Steer5081987-89All
CaterpillarSkid Steer5181985-95All
CaterpillarSkid Steer5281985-95All
CaterpillarSkid Steer530B1992-98All
CaterpillarTool CarrierIT18B1986-92All
CaterpillarTool CarrierIT28B1986-93All
CaterpillarTrack Loader9431985-92All
CaterpillarTrack Loader9531985-92All
CaterpillarTrack Loader9631985-95All
CaterpillarTrack Loader963B1995-96All
CaterpillarTrack Loader9731985-95All
CaterpillarTrack TractorD4H1985-96All
CaterpillarTrack TractorD6D1985-97All
CaterpillarTrack TractorD6H1985-95All
CaterpillarTrack TractorD7G1985-93All
CaterpillarTrack TractorD7G1995-96All
CaterpillarTrack TractorD7H1985-93All
CaterpillarTrack TractorD8L1985-92All
CaterpillarTrack TractorD8N1986-96All
CaterpillarTrack TractorD9N1985-95All
CaterpillarMedium & Heavy-Duty Truck7841986-93All
CaterpillarMedium & Heavy-Duty Truck7851986-93All
CaterpillarMedium & Heavy-Duty Truck7891986-93All

Replaces These Part Numbers

CATERPILLAR0R5217
CATERPILLAR7T6172
DENSO100211-086
DENSO100211-0860
DENSO9760218-086
LESTER12059

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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