Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286
Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286

Truck Alternator for Delco 24SI 160 Amp 8600889 Quad Mount 400-12286

Item #: 400-12286

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 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: 400-12286

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Voltage12
RotationCW
DimensionReplacement 24SI Unit: Mtg. Ear Holes (2): 12.0mm Unthreaded Mtg. Ear Holes (2): 10.0mm Unthreaded B+ Terminal: 5/16-18 I Terminal: 10-24 R Terminal: 10-24 Shaft OD: 22.22mm
Amperage160
RegulatorIR
Fan TypeIF
FitsDELCO 24SI ALTERNATOR

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
FordMedium & Heavy-Duty TruckF6502004
FordMedium & Heavy-Duty TruckF6502005
FordMedium & Heavy-Duty TruckF6502006
FordMedium & Heavy-Duty TruckF6502007
FordMedium & Heavy-Duty TruckF6502008
FordMedium & Heavy-Duty TruckF75020047200cc 7.2L L6
FordMedium & Heavy-Duty TruckF75020057200cc 7.2L L6
FordMedium & Heavy-Duty TruckF75020067200cc 7.2L L6
FordMedium & Heavy-Duty TruckF75020077200cc 7.2L L6
FordMedium & Heavy-Duty TruckF75020087200cc 7.2L L6
FreightlinerMedium & Heavy-Duty TruckArgosy2000
FreightlinerMedium & Heavy-Duty TruckArgosy2001
FreightlinerMedium & Heavy-Duty TruckArgosy2002
FreightlinerMedium & Heavy-Duty TruckArgosy2003
FreightlinerMedium & Heavy-Duty TruckBusiness Class M22004
FreightlinerMedium & Heavy-Duty TruckBusiness Class M22005
FreightlinerMedium & Heavy-Duty TruckBusiness Class M22006
FreightlinerMedium & Heavy-Duty TruckBusiness Class M22007
FreightlinerMedium & Heavy-Duty TruckBusiness Class M220088.3L L6
FreightlinerMedium & Heavy-Duty TruckBusiness Class M22008
FreightlinerTruckCentury Class2001
FreightlinerTruckCentury Class2002
FreightlinerTruckCentury Class2003
FreightlinerTruckCentury Class2004
FreightlinerMedium & Heavy-Duty TruckCentury Class2005
FreightlinerTruckCentury Class2006
FreightlinerMedium & Heavy-Duty TruckCentury Class2007
FreightlinerMedium & Heavy-Duty TruckClassic2001
FreightlinerMedium & Heavy-Duty TruckClassic2002
FreightlinerMedium & Heavy-Duty TruckClassic2003
FreightlinerMedium & Heavy-Duty TruckClassic2004
FreightlinerMedium & Heavy-Duty TruckClassic2005
FreightlinerMedium & Heavy-Duty TruckClassic2006
FreightlinerMedium & Heavy-Duty TruckClassic2007
FreightlinerMedium & Heavy-Duty TruckClassic200812800cc 12.8L MBE4000
FreightlinerMedium & Heavy-Duty TruckColumbia2001
FreightlinerMedium & Heavy-Duty TruckColumbia2002
FreightlinerMedium & Heavy-Duty TruckColumbia2003
FreightlinerMedium & Heavy-Duty TruckColumbia2004
FreightlinerMedium & Heavy-Duty TruckColumbia2005
FreightlinerMedium & Heavy-Duty TruckColumbia2006
FreightlinerMedium & Heavy-Duty TruckColumbia2007
FreightlinerMedium & Heavy-Duty TruckColumbia200812800cc 12.8L MBE4000
FreightlinerMedium & Heavy-Duty TruckCoronado2003
FreightlinerMedium & Heavy-Duty TruckCoronado2004
FreightlinerMedium & Heavy-Duty TruckCoronado2005
FreightlinerMedium & Heavy-Duty TruckCoronado2006
FreightlinerMedium & Heavy-Duty TruckCoronado2007
FreightlinerMedium & Heavy-Duty TruckCoronado200814.6L L6
FreightlinerMedium & Heavy-Duty TruckCoronado2008
FreightlinerMedium & Heavy-Duty TruckFL502001
FreightlinerMedium & Heavy-Duty TruckFL502002
FreightlinerMedium & Heavy-Duty TruckFL602000
FreightlinerMedium & Heavy-Duty TruckFL602001
FreightlinerMedium & Heavy-Duty TruckFL602002
FreightlinerMedium & Heavy-Duty TruckFL602003
FreightlinerMedium & Heavy-Duty TruckFL602004
FreightlinerMedium & Heavy-Duty TruckFL702000
FreightlinerMedium & Heavy-Duty TruckFL702001
FreightlinerMedium & Heavy-Duty TruckFL702002
FreightlinerMedium & Heavy-Duty TruckFL702003
FreightlinerMedium & Heavy-Duty TruckFL702004
FreightlinerMedium & Heavy-Duty TruckFL702005
FreightlinerMedium & Heavy-Duty TruckFL802003CNG
FreightlinerMedium & Heavy-Duty TruckFL802004
KenworthMedium & Heavy-Duty TruckT30020045900cc 5.9L L6
KenworthMedium & Heavy-Duty TruckT3002004
KenworthMedium & Heavy-Duty TruckT30020055900cc 5.9L L6
KenworthMedium & Heavy-Duty TruckT3002005
KenworthMedium & Heavy-Duty TruckT30020065900cc 5.9L L6
KenworthMedium & Heavy-Duty TruckT3002006
KenworthMedium & Heavy-Duty TruckT30020075900cc 5.9L L6
KenworthMedium & Heavy-Duty TruckT3002007
Sterling TruckMedium & Heavy-Duty TruckA9500200110.8L L6
Sterling TruckMedium & Heavy-Duty TruckA9500200210.8L L6
Sterling TruckMedium & Heavy-Duty TruckA9500200212.7L L6
Sterling TruckMedium & Heavy-Duty TruckA9500200310.8L L6
Sterling TruckMedium & Heavy-Duty TruckA9500200411.1L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200412.5L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200511.1L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200512.5L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200611.1L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200612.5L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200711.1L -6
Sterling TruckMedium & Heavy-Duty TruckA9500200712.5L -6
Sterling TruckMedium & Heavy-Duty TruckActerra 550020016.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 550020026.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020016.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020026.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020036.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020048.3L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020058.3L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020068.3L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 650020078.3L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 750020016.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 750020026.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 750020036.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 850020016.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 850020026.4L L6
Sterling TruckMedium & Heavy-Duty TruckActerra 850020036.4L L6
Sterling TruckMedium & Heavy-Duty TruckAT9500200112.7L L6
Sterling TruckMedium & Heavy-Duty TruckAT9500200210.8L L6
Sterling TruckMedium & Heavy-Duty TruckAT9500200310.8L L6
Sterling TruckMedium & Heavy-Duty TruckAT9500200411.1L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200412.5L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200511.1L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200512.5L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200611.1L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200612.5L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200711.1L -6
Sterling TruckMedium & Heavy-Duty TruckAT9500200712.5L -6
Sterling TruckMedium & Heavy-Duty TruckCondor200110.8L L6
Sterling TruckMedium & Heavy-Duty TruckCondor200210.8L L6
Sterling TruckMedium & Heavy-Duty TruckCondor20028.9L L6
Sterling TruckMedium & Heavy-Duty TruckCondor200310.8L L6
Sterling TruckMedium & Heavy-Duty TruckCondor20038.9L L6
Sterling TruckMedium & Heavy-Duty TruckCondor20048.9L L6
Sterling TruckMedium & Heavy-Duty TruckCondor20058.9L L6
Sterling TruckMedium & Heavy-Duty TruckL750020048.3L L6
Sterling TruckMedium & Heavy-Duty TruckL750020057.2L L6
Sterling TruckMedium & Heavy-Duty TruckL750020058.3L L6
Sterling TruckMedium & Heavy-Duty TruckL750020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckL750020066.4L L6
Sterling TruckMedium & Heavy-Duty TruckL750020067.2L L6
Sterling TruckMedium & Heavy-Duty TruckL750020068.3L L6
Sterling TruckMedium & Heavy-Duty TruckL750020068.8L L6
Sterling TruckMedium & Heavy-Duty TruckL750020076.4L L6
Sterling TruckMedium & Heavy-Duty TruckL750020077.2L L6
Sterling TruckMedium & Heavy-Duty TruckL750020078.3L L6
Sterling TruckMedium & Heavy-Duty TruckL750020078.8L L6
Sterling TruckMedium & Heavy-Duty TruckL850020047.2L L6
Sterling TruckMedium & Heavy-Duty TruckL850020048.8L L6
Sterling TruckMedium & Heavy-Duty TruckL850020057.2L L6
Sterling TruckMedium & Heavy-Duty TruckL850020058.3L L6
Sterling TruckMedium & Heavy-Duty TruckL850020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckL850020066.4L L6
Sterling TruckMedium & Heavy-Duty TruckL850020067.2L L6
Sterling TruckMedium & Heavy-Duty TruckL850020068.3L L6
Sterling TruckMedium & Heavy-Duty TruckL850020068.8L L6
Sterling TruckMedium & Heavy-Duty TruckL850020076.4L L6
Sterling TruckMedium & Heavy-Duty TruckL850020077.2L L6
Sterling TruckMedium & Heavy-Duty TruckL850020078.3L L6
Sterling TruckMedium & Heavy-Duty TruckL850020078.8L L6
Sterling TruckMedium & Heavy-Duty TruckL950020048.8L L6
Sterling TruckMedium & Heavy-Duty TruckL9500200511.1L -6
Sterling TruckMedium & Heavy-Duty TruckL9500200512.5L -6
Sterling TruckMedium & Heavy-Duty TruckL950020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckL9500200611.1L -6
Sterling TruckMedium & Heavy-Duty TruckL9500200612.5L -6
Sterling TruckMedium & Heavy-Duty TruckL950020068.8L L6
Sterling TruckMedium & Heavy-Duty TruckL9500200711.1L -6
Sterling TruckMedium & Heavy-Duty TruckL9500200712.5L -6
Sterling TruckMedium & Heavy-Duty TruckL950020078.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020048.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020048.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020057.2L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020058.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020066.4L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020068.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020076.4L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020077.2L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020078.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT750020078.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020048.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020057.2L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020058.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020066.4L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020067.2L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020068.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020068.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020076.4L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020077.2L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020078.3L L6
Sterling TruckMedium & Heavy-Duty TruckLT850020078.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT9500200315.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT950020048.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT9500200511.1L -6
Sterling TruckMedium & Heavy-Duty TruckLT9500200512.5L -6
Sterling TruckMedium & Heavy-Duty TruckLT950020058.8L L6
Sterling TruckMedium & Heavy-Duty TruckLT9500200612.5L -6
Sterling TruckMedium & Heavy-Duty TruckLT9500200711.1L -6
Sterling TruckMedium & Heavy-Duty TruckLT9500200712.5L -6
Sterling TruckMedium & Heavy-Duty TruckLT950020078.8L L6

Replaces These Part Numbers

ARROWHEADADR0406, 400-12286, D8600889
DELCO8600889
J&N Electrical Products400-12286
LESTER8719

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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