Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449
Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449

Alternator for Atlantic 3000-0500, Lester 7127-3SE, Family 10SI 400-12449

Item #: 400-12449

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.

Order today to get this price.

$111.03
Next Day Air Shipping for
Order today and ships out next business day.
Order in the next hrs mins secs
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
Check if this fits your vehicle
HOW TO FIND YOUR FITMENT
Two ways to ensure proper fitment
DO YOU KNOW YOUR
OEM PART NUMBER?
Look for your OEM part number below or use our search tool.
LOOK FOR YOUR
MAKE/ MODEL/ YEAR
Enter your make/model/year below to find the right part.
  • 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: 400-12449

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Voltage12
RotationCW
DimensionReplacement 10SI Unit:; Mtg. Ear 1 Hole: 5/16-18 Threaded; Mtg. Ear 2 Hole: 10.3mm Unthreaded; B+ Terminal: 12-24; Polarity: Negative; Notes:; 1-Wire System; Self-Excited; Replacement is 63 Amps;
Amperage63
Clock3
Pulley ClassV1
RegulatorIR
Fan TypeEF
FitsUNIVERSAL APPLICATIONS
1-WIRE HOOKUP

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
BuickAuto and Light TruckApollo1973
BuickAuto and Light TruckApollo1974
BuickAuto and Light TruckApollo1975
BuickAuto and Light TruckCentury1975
BuickAuto and Light TruckCentury1976
BuickAuto and Light TruckCentury1977
BuickAuto and Light TruckCentury1978
BuickAuto and Light TruckCentury1979
BuickAuto and Light TruckCentury1980
BuickAuto and Light TruckCentury1981
BuickAuto and Light TruckCentury1982
BuickAuto and Light TruckCentury1983
BuickAuto and Light TruckElectra1977
BuickAuto and Light TruckElectra1978
BuickAuto and Light TruckElectra1979
BuickAuto and Light TruckElectra1980
BuickAuto and Light TruckElectra1981
BuickAuto and Light TruckElectra1982
BuickAuto and Light TruckElectra1983
BuickAuto and Light TruckEstate Wagon1977
BuickAuto and Light TruckEstate Wagon1978
BuickAuto and Light TruckEstate Wagon1979
BuickAuto and Light TruckLeSabre1975
BuickAuto and Light TruckLeSabre1976
BuickAuto and Light TruckLeSabre1977
BuickAuto and Light TruckLeSabre1978
BuickAuto and Light TruckLeSabre1979
BuickAuto and Light TruckLeSabre1980
BuickAuto and Light TruckLeSabre1981
BuickAuto and Light TruckLeSabre1982
BuickAuto and Light TruckLeSabre1983
BuickAuto and Light TruckRegal1975
BuickAuto and Light TruckRegal1976
BuickAuto and Light TruckRegal1977
BuickAuto and Light TruckRegal1978
BuickAuto and Light TruckRegal1979
BuickAuto and Light TruckRegal1980
BuickAuto and Light TruckRegal1981
BuickAuto and Light TruckRegal1982
BuickAuto and Light TruckRegal1983
BuickAuto and Light TruckRiviera1977
BuickAuto and Light TruckRiviera1978
BuickAuto and Light TruckRiviera1979
BuickAuto and Light TruckRiviera1980
BuickAuto and Light TruckRiviera1981
BuickAuto and Light TruckSkyhawk1975
BuickAuto and Light TruckSkyhawk1976
BuickAuto and Light TruckSkyhawk1977
BuickAuto and Light TruckSkyhawk1978
BuickAuto and Light TruckSkyhawk1979
BuickAuto and Light TruckSkylark1975
BuickAuto and Light TruckSkylark1976
BuickAuto and Light TruckSkylark1977
BuickAuto and Light TruckSkylark1978
BuickAuto and Light TruckSkylark1979
BuickAuto and Light TruckSkylark1980
BuickAuto and Light TruckSkylark1981
BuickAuto and Light TruckSkylark1982
BuickAuto and Light TruckSkylark1983
BuickAuto and Light TruckSkylark1984
BuickAuto and Light TruckSkylark1985
CadillacAuto and Light TruckCalais1973
CadillacAuto and Light TruckCalais1974
CadillacAuto and Light TruckCalais1975
CadillacAuto and Light TruckCalais1976
CadillacAuto and Light TruckCommercial Chassis1975
CadillacAuto and Light TruckCommercial Chassis1976
CadillacAuto and Light TruckCommercial Chassis1977
CadillacAuto and Light TruckCommercial Chassis1978
CadillacAuto and Light TruckCommercial Chassis1979
CadillacAuto and Light TruckCommercial Chassis1980
CadillacAuto and Light TruckDeVille1972
CadillacAuto and Light TruckDeVille1973
CadillacAuto and Light TruckDeVille1974
CadillacAuto and Light TruckDeVille1975
CadillacAuto and Light TruckDeVille1976
CadillacAuto and Light TruckDeVille1977
CadillacAuto and Light TruckDeVille1978
CadillacAuto and Light TruckDeVille1979
CadillacAuto and Light TruckDeVille1980
CadillacAuto and Light TruckEldorado1971
CadillacAuto and Light TruckEldorado1972
CadillacAuto and Light TruckEldorado1973
CadillacAuto and Light TruckEldorado1974
CadillacAuto and Light TruckEldorado1975
CadillacAuto and Light TruckEldorado1976
CadillacAuto and Light TruckEldorado1977
CadillacAuto and Light TruckEldorado1978
CadillacAuto and Light TruckFleetwood1972
CadillacAuto and Light TruckFleetwood1973
CadillacAuto and Light TruckFleetwood1974
CadillacAuto and Light TruckFleetwood1975
CadillacAuto and Light TruckFleetwood1976
CadillacAuto and Light TruckFleetwood1977
CadillacAuto and Light TruckFleetwood1978
CadillacAuto and Light TruckFleetwood1979
CadillacAuto and Light TruckFleetwood1980
CadillacAuto and Light TruckSeville1978
CadillacAuto and Light TruckSeville1979
ChevroletAuto and Light TruckBel Air1973
ChevroletAuto and Light TruckBel Air1974
ChevroletAuto and Light TruckBel Air1975
ChevroletAuto and Light TruckBel Air1981
ChevroletAuto and Light TruckBlazer1973
ChevroletAuto and Light TruckBlazer1974
ChevroletTruckC101975
ChevroletTruckC101976
ChevroletTruckC101977
ChevroletTruckC101978
ChevroletTruckC101979
ChevroletTruckC101980
ChevroletTruckC101981
ChevroletTruckC101982
ChevroletTruckC101983
ChevroletTruckC101984
ChevroletTruckC101985
ChevroletTruckC10 Pickup1973
ChevroletTruckC10 Pickup1974
ChevroletTruckC10 Suburban1973
ChevroletTruckC10 Suburban1974
ChevroletTruckC10 Suburban1975
ChevroletTruckC10 Suburban1976
ChevroletTruckC10 Suburban1977
ChevroletTruckC10 Suburban1978
ChevroletTruckC10 Suburban1979
ChevroletTruckC10 Suburban1980
ChevroletTruckC10 Suburban1981
ChevroletTruckC10 Suburban1982
ChevroletTruckC10 Suburban1983
ChevroletTruckC10 Suburban1984
ChevroletTruckC10 Suburban1985
ChevroletTruckC201975
ChevroletTruckC201976
ChevroletTruckC201977
ChevroletTruckC201978
ChevroletTruckC201979
ChevroletTruckC201980
ChevroletTruckC201981
ChevroletTruckC201982
ChevroletTruckC201983
ChevroletTruckC201984
ChevroletTruckC201985
ChevroletTruckC20 Pickup1973
ChevroletTruckC20 Pickup1974
ChevroletTruckC20 Suburban1973
ChevroletTruckC20 Suburban1974
ChevroletTruckC20 Suburban1975
ChevroletTruckC20 Suburban1976
ChevroletTruckC20 Suburban1977
ChevroletTruckC20 Suburban1978
ChevroletTruckC20 Suburban1979
ChevroletTruckC20 Suburban1980
ChevroletTruckC20 Suburban1981
ChevroletTruckC20 Suburban1982
ChevroletTruckC20 Suburban1983
ChevroletTruckC20 Suburban1984
ChevroletTruckC20 Suburban1985
ChevroletTruckC301975
ChevroletTruckC301976
ChevroletTruckC301977
ChevroletTruckC301978
ChevroletTruckC301979
ChevroletTruckC301980
ChevroletTruckC301981
ChevroletTruckC301982
ChevroletTruckC301983
ChevroletTruckC301984
ChevroletTruckC301985
ChevroletTruckC30 Pickup1973
ChevroletTruckC30 Pickup1974
ChevroletMedium & Heavy-Duty TruckC5019895700cc 5.7L V8
ChevroletMedium & Heavy-Duty TruckC5019895700cc 5.7L V8 Gas
ChevroletMedium & Heavy-Duty TruckC6019895700cc 5.7L V8
ChevroletMedium & Heavy-Duty TruckC6019895700cc 5.7L V8 Gas
ChevroletMedium & Heavy-Duty TruckC6019896000cc 6.0L V8
ChevroletMedium & Heavy-Duty TruckC6019896000cc 6.0L V8 Gas
ChevroletMedium & Heavy-Duty TruckC7019896000cc 6.0L V8
ChevroletMedium & Heavy-Duty TruckC7019896000cc 6.0L V8 Gas
ChevroletMedium & Heavy-Duty TruckC7019897000cc 7.0L V8
ChevroletMedium & Heavy-Duty TruckC7019897000cc 7.0L V8 Gas
ChevroletAuto and Light TruckCamaro1973
ChevroletAuto and Light TruckCamaro1974
ChevroletAuto and Light TruckCamaro1975
ChevroletAuto and Light TruckCamaro1976
ChevroletAuto and Light TruckCamaro1977
ChevroletAuto and Light TruckCamaro1978
ChevroletAuto and Light TruckCamaro1979
ChevroletAuto and Light TruckCamaro1980
ChevroletAuto and Light TruckCamaro1981
ChevroletAuto and Light TruckCamaro1982
ChevroletAuto and Light TruckCamaro1983
ChevroletAuto and Light TruckCaprice1973
ChevroletAuto and Light TruckCaprice1974
ChevroletAuto and Light TruckCaprice1975
ChevroletAuto and Light TruckCaprice1976
ChevroletAuto and Light TruckCaprice1977
ChevroletAuto and Light TruckCaprice1978
ChevroletAuto and Light TruckCaprice1979
ChevroletAuto and Light TruckCaprice1980
ChevroletAuto and Light TruckCaprice1981
ChevroletAuto and Light TruckCaprice1982
ChevroletAuto and Light TruckCelebrity1982
ChevroletAuto and Light TruckCelebrity1983
ChevroletAuto and Light TruckCelebrity1984
ChevroletAuto and Light TruckCelebrity1985
ChevroletAuto and Light TruckCelebrity1986
ChevroletAuto and Light TruckChevelle1973
ChevroletAuto and Light TruckCitation1980
ChevroletAuto and Light TruckCitation1981
ChevroletAuto and Light TruckCitation1982
ChevroletAuto and Light TruckCitation1983
ChevroletAuto and Light TruckCitation II1984
ChevroletAuto and Light TruckCitation II1985
ChevroletAuto and Light TruckCorvette1969
ChevroletAuto and Light TruckCorvette1970
ChevroletAuto and Light TruckCorvette1971
ChevroletAuto and Light TruckCorvette1972
ChevroletAuto and Light TruckCorvette1973
ChevroletAuto and Light TruckCorvette1974
ChevroletAuto and Light TruckCorvette1975
ChevroletAuto and Light TruckCorvette1976
ChevroletAuto and Light TruckCorvette1977
ChevroletAuto and Light TruckCorvette1978
ChevroletAuto and Light TruckCorvette1979
ChevroletAuto and Light TruckCorvette1980
ChevroletTruckEl Camino1973
ChevroletTruckEl Camino1974
ChevroletTruckEl Camino1975
ChevroletTruckEl Camino1976
ChevroletTruckEl Camino1977
ChevroletTruckEl Camino1978
ChevroletTruckEl Camino1979
ChevroletTruckEl Camino1980
ChevroletTruckEl Camino1981
ChevroletTruckEl Camino1982
ChevroletTruckEl Camino1983
ChevroletAuto and Light TruckG101975
ChevroletAuto and Light TruckG101976
ChevroletAuto and Light TruckG101977
ChevroletAuto and Light TruckG101978
ChevroletAuto and Light TruckG101979
ChevroletAuto and Light TruckG101980
ChevroletAuto and Light TruckG101981
ChevroletAuto and Light TruckG101982
ChevroletAuto and Light TruckG101983
ChevroletAuto and Light TruckG101984
ChevroletAuto and Light TruckG101985
ChevroletAuto and Light TruckG101986
ChevroletAuto and Light TruckG10 Van1973
ChevroletAuto and Light TruckG10 Van1974
ChevroletAuto and Light TruckG201975
ChevroletAuto and Light TruckG201976
ChevroletAuto and Light TruckG201977
ChevroletAuto and Light TruckG201978
ChevroletAuto and Light TruckG201979
ChevroletAuto and Light TruckG201980
ChevroletAuto and Light TruckG201981
ChevroletAuto and Light TruckG201982
ChevroletAuto and Light TruckG201983
ChevroletAuto and Light TruckG201984
ChevroletAuto and Light TruckG201985
ChevroletAuto and Light TruckG201986
ChevroletAuto and Light TruckG20 Van1973
ChevroletAuto and Light TruckG20 Van1974
ChevroletAuto and Light TruckG301975
ChevroletAuto and Light TruckG301976
ChevroletAuto and Light TruckG301977
ChevroletAuto and Light TruckG301978
ChevroletAuto and Light TruckG301979
ChevroletAuto and Light TruckG301980
ChevroletAuto and Light TruckG301981
ChevroletAuto and Light TruckG301982
ChevroletAuto and Light TruckG301983
ChevroletAuto and Light TruckG301984
ChevroletAuto and Light TruckG301985
ChevroletAuto and Light TruckG30 Van1973
ChevroletAuto and Light TruckG30 Van1974
ChevroletAuto and Light TruckImpala1973
ChevroletAuto and Light TruckImpala1974
ChevroletAuto and Light TruckImpala1975
ChevroletAuto and Light TruckImpala1976
ChevroletAuto and Light TruckImpala1977
ChevroletAuto and Light TruckImpala1978
ChevroletAuto and Light TruckImpala1979
ChevroletAuto and Light TruckImpala1980
ChevroletAuto and Light TruckImpala1981
ChevroletAuto and Light TruckImpala1982
ChevroletTruckK101975
ChevroletTruckK101976
ChevroletTruckK101977
ChevroletTruckK101978
ChevroletTruckK101979
ChevroletTruckK101980
ChevroletTruckK101981
ChevroletTruckK101982
ChevroletTruckK101983
ChevroletTruckK101984
ChevroletTruckK101985
ChevroletTruckK10 Pickup1973
ChevroletTruckK10 Pickup1974
ChevroletTruckK10 Suburban1973
ChevroletTruckK10 Suburban1974
ChevroletTruckK10 Suburban1975
ChevroletTruckK10 Suburban1976
ChevroletTruckK10 Suburban1977
ChevroletTruckK10 Suburban1978
ChevroletTruckK10 Suburban1979
ChevroletTruckK10 Suburban1980
ChevroletTruckK10 Suburban1981
ChevroletTruckK10 Suburban1982
ChevroletTruckK10 Suburban1983
ChevroletTruckK10 Suburban1984
ChevroletTruckK10 Suburban1985
ChevroletTruckK201975
ChevroletTruckK201976
ChevroletTruckK201977
ChevroletTruckK201978
ChevroletTruckK201979
ChevroletTruckK201980
ChevroletTruckK201981
ChevroletTruckK201982
ChevroletTruckK201983
ChevroletTruckK201984
ChevroletTruckK201985
ChevroletTruckK20 Pickup1973
ChevroletTruckK20 Pickup1974
ChevroletTruckK20 Suburban1973
ChevroletTruckK20 Suburban1974
ChevroletTruckK20 Suburban1975
ChevroletTruckK20 Suburban1976
ChevroletTruckK20 Suburban1977
ChevroletTruckK20 Suburban1978
ChevroletTruckK20 Suburban1979
ChevroletTruckK20 Suburban1980
ChevroletTruckK20 Suburban1981
ChevroletTruckK20 Suburban1982
ChevroletTruckK20 Suburban1983
ChevroletTruckK20 Suburban1984
ChevroletTruckK20 Suburban1985
ChevroletTruckK301977
ChevroletTruckK301978
ChevroletTruckK301979
ChevroletTruckK301980
ChevroletTruckK301981
ChevroletTruckK301982
ChevroletTruckK301983
ChevroletTruckK301984
ChevroletTruckK301985
ChevroletTruckK30 Pickup1973
ChevroletTruckK30 Pickup1974
ChevroletTruckK5 Blazer1975
ChevroletTruckK5 Blazer1976
ChevroletTruckK5 Blazer1977
ChevroletTruckK5 Blazer1978
ChevroletTruckK5 Blazer1979
ChevroletTruckK5 Blazer1980
ChevroletTruckK5 Blazer1981
ChevroletTruckK5 Blazer1982
ChevroletTruckK5 Blazer1983
ChevroletTruckK5 Blazer1984
ChevroletTruckK5 Blazer1985
ChevroletAuto and Light TruckLaguna1973
ChevroletAuto and Light TruckLaguna1974
ChevroletAuto and Light TruckLaguna1975
ChevroletAuto and Light TruckLaguna1976
ChevroletAuto and Light TruckMalibu1973
ChevroletAuto and Light TruckMalibu1974
ChevroletAuto and Light TruckMalibu1975
ChevroletAuto and Light TruckMalibu1976
ChevroletAuto and Light TruckMalibu1977
ChevroletAuto and Light TruckMalibu1978
ChevroletAuto and Light TruckMalibu1979
ChevroletAuto and Light TruckMalibu1980
ChevroletAuto

Replaces These Part Numbers

ARROWHEADADR0152
J&N Electrical Products400-12449
LESTER7127-3SE

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

Recommended Products

Keeping customers satisfied for over 35 years.

Customers keep returning because we keep delivering total satisfaction. Our key to success is selling parts that fit and perform like the originals. It's why so many mechanics make us their top choice.

  • Find The Right Part

    Use our advanced part finder or search by part number to find your part.

  • Same-Day Shipping

    Orders placed by 2pm EST will ship that same day.

  • Fast, Free Delivery

    Orders over $50 shipped FREE to the 48 adjoining U.S states.

  • Expert Advice

    Need help choosing your part? Please contact us for help.

Back To Top