Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140
Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140

Alternator for John Deere Tractor 4120, 4320, 4520, 4720 All ABO0435-140

Item #: 400-24230

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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


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: 400-24230

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Part TypeUNIT
Pulley ClassS6
Fan TypeIF
FitsJOHN DEERE 4120, 4320, 4520, 4720, 5225, 5325, 5425, 5525 TRACTORS

Applications List

Select Make & Type
JOHN DEERELoader244J2004 - OnJD 2.4L 59HP Diesel
JOHN DEERELoader304J2004 - OnJD 3.1L 73HP Diesel
JOHN DEERESkid Steer Loader313AllJD 4024T 49HP Engine
JOHN DEERESkid Steer Loader315AllJD 4024T 49HP Engine
JOHN DEERESkid Steer Loader318EAllYanmar 4TNV98C 60HP Dsl
JOHN DEERESkid Steer Loader320EAllYanmar 4TNV98C 66HP Dsl
JOHN DEERESkid Steer Loader3252000JD 5030T 70HP Engine
JOHN DEERESkid Steer Loader3252001JD 5030T 70HP Engine
JOHN DEERESkid Steer Loader3252002JD 5030T 70HP Engine
JOHN DEERESkid Steer Loader3252003JD 5030T 70HP Engine
JOHN DEERESkid Steer Loader3252004JD 5030T 70HP Engine
JOHN DEERESkid Steer Loader326EAllYanmar 4TNV98C 70HP Dsl
JOHN DEERESkid Steer Loader328AllJD 5030TW 76HP Engine
JOHN DEERESkid Steer Loader328EAllYanmar 4TNV98CHT 83HP Dsl
JOHN DEERESkid Steer Loader332AllJD 5030HW 85HP Engine
JOHN DEERESkid Steer Loader332EAllYanmar 4TNV98CHT 97HP Dsl
JOHN DEERETrack Loader319EAllYanmar 4TNV98C 66HP Dsl
JOHN DEERETrack Loader323EAllYanmar 4TNV98CT 70HP Dsl
JOHN DEERETrack Loader329EAllYanmar 4TNV94CHT 83HP Dsl
JOHN DEERETrack Loader333EAllYanmar 4TNV94CHT 97HP Dsl
JOHN DEERETrack LoaderCT315AllJD 2.4L 49HP Diesel
JOHN DEERETrack LoaderCT322AllJD 2.4L 66HP Diesel
JOHN DEERETrack LoaderCT332AllJD 3.1L 82HP Diesel
JOHN DEERETractor5065MAllJD 5-186 65HP Dsl
JOHN DEERETractor5075MAllJD 5-186 75HP Dsl
JOHN DEERETractor5076EAllJD 4-276 77HP Dsl
JOHN DEERETractor5076EFAllJD 4-276 77HP Dsl
JOHN DEERETractor5076ELAllJD 4-276 77HP Dsl
JOHN DEERETractor5078EAllJD 4-276 77HP Dsl
JOHN DEERETractor5082EAllJD 4-276 81HP Dsl
JOHN DEERETractor5083EAllJD 4-276 83HP Dsl
JOHN DEERETractor5085EAllJD 4-276 85HP Dsl
JOHN DEERETractor5085MAllJD 4-276 85HP Dsl
JOHN DEERETractor5090EAllJD 4-276 89HP Dsl
JOHN DEERETractor5093EAllJD 4-276 93HP Dsl
JOHN DEERETractor5095MAllJD 4-276 95HP Dsl
JOHN DEERETractor5095MHAllJD 4-276 95HP Dsl
JOHN DEERETractor5101ENAllJD 4-276 101HP Dsl
JOHN DEERETractor5105MAllJD 4-276 105HP Dsl
JOHN DEERETractor5225AllJD 5-186 56HP Dsl
JOHN DEERETractor5325AllJD 5-186 67HP Dsl
JOHN DEERETractor5325NAllJD 5-186 67HP Dsl
JOHN DEERETractor5425AllJD 4-276 81HP Dsl
JOHN DEERETractor5425NAllJD 4-276 81HP Dsl
JOHN DEERETractor5525AllJD 4-276 91HP Dsl
JOHN DEERETractor5525NAllJD 4-276 91HP Dsl
JOHN DEERETractor4120AllJD 4024T 43HP Dsl
JOHN DEERETractor4320AllJD 4024T 48HP Dsl
JOHN DEERETractor4520AllJD 4024T 60HP Dsl
JOHN DEERETractor4720AllJD 4024T 66HP Dsl
JOHN DEERETractor5065MAllJD PT 3.05L 65HP Dsl
JOHN DEERETractor5075MAllJD PT 3.05L 75HP Dsl
JOHN DEERETractor5083ENAllJD PT 4.5L 83HP Dsl
JOHN DEERETractor5085MAllJD PT 4.5L 85HP Dsl
JOHN DEERETractor5093ENAllJD PT 4.5L 93HP Dsl
JOHN DEERETractor5095MAllJD PT 4.5L 95HP Dsl
JOHN DEERETractor5101ENAllJD PT 4.5L 101HP Dsl
JOHN DEERETractor5105MAllJD PT 4.5L 105HP Dsl
JOHN DEERETractor6100DAllJD PT 4.5L 98.9HP Dsl
JOHN DEERETractor6110DAllJD PT 4.5L 106HP Dsl
JOHN DEERETractor6115DAllJD PT 4.5L 115HP Dsl
JOHN DEERETractor6125DAllJD PT 4.5L 123HP Dsl
JOHN DEERETractor6130DAllJD PT 4.5L 130HP Dsl
JOHN DEERETractor6140DAllJD PT 4.5L 140HP Dsl

Replaces These Part Numbers

BOSCH0-124-315-030, 0-124-315-042
J&N Electrical Products400-24047, 400-24047R
JOHN DEERERE509648, RE529377, SE501831

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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