Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172
Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172
Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172
Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172
Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172

Alternator for Chevrolet Silverado Sierra Pickup 4.3L 1500 1999-2002 400-12172

Item #: 400-12172

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Highly engineered alternators for Cadillac, Chevrolet and GMC
  • 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 for Chevrolet and other GM Vehicles
DB Electrical offers premium-quality alternators that deliver high-performance for Chevrolet and other General Motors brands such as Buick, GMC, Pontiac and Oldsmobile. Owners of Chevy cars, trucks, vans and SUVs appreciate the highly engineered quality of DB Electrical alternators for flawless mechanical performance and longevity. Founded in 1911, Chevy has been a symbol of the American road for over a century. A DB Electrical alternator is a great choice for keeping your Chevrolet or other GM vehicle on the road. (Check our applications table below for specific makes and models for this alternator.)

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 produce better charging and longer life under high-heat environments.
  • 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 - Factory-Direct Pricing and 1-Year Warranty
DB Electrical sells its exceptional-quality electrical components at low factory-direct prices. 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: 400-12172

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Voltage12
RotationCW
Amperage130
Pulley Class1272
RegulatorIR
Fan TypeIF
FitsCHEVROLET / GMC LIGHT TRUCKS 1999 ,6-GROOVE PULLEY 56mm OD ,DELCO AD244 SERIES

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
CADILLACAuto and Light TruckESCALADE20025.3L(325) V8
CADILLACAuto and Light TruckESCALADE20026.0L(364) V8
CADILLACAuto and Light TruckESCALADE EXT20026.0L(364) V8
CHEVROLETAuto and Light TruckAVALANCHE 150020025.3L(325) V8
CHEVROLETAuto and Light TruckAVALANCHE 250020028.1L(496) V8
CHEVROLETAuto and Light TruckC / K / R / V SERIES PICKUPS20018.1L(496) V8
CHEVROLETAuto and Light TruckC / K / R / V SERIES PICKUPS20028.1L(496) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20014.3L(262) V6
CHEVROLETAuto and Light TruckEXPRESS VANS20015.0L(305) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20015.7L(350) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20016.5L(395) V8 (Diesel)
CHEVROLETAuto and Light TruckEXPRESS VANS20018.1L(496) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20024.3L(262) V6
CHEVROLETAuto and Light TruckEXPRESS VANS20025.0L(305) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20025.7L(350) V8
CHEVROLETAuto and Light TruckEXPRESS VANS20026.5L(395) V8 (Diesel)
CHEVROLETAuto and Light TruckEXPRESS VANS20028.1L(496) V8
CHEVROLETAuto and Light TruckSILVERADO 150019994.3L(262) V6
CHEVROLETAuto and Light TruckSILVERADO 150019994.8L(294) V8
CHEVROLETAuto and Light TruckSILVERADO 150019995.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 150020004.3L(262) V6
CHEVROLETAuto and Light TruckSILVERADO 150020004.8L(294) V8
CHEVROLETAuto and Light TruckSILVERADO 150020005.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 150020014.3L(262) V6
CHEVROLETAuto and Light TruckSILVERADO 150020014.8L(294) V8
CHEVROLETAuto and Light TruckSILVERADO 150020015.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 150020024.3L(262) V6
CHEVROLETAuto and Light TruckSILVERADO 150020024.8L(294) V8
CHEVROLETAuto and Light TruckSILVERADO 150020025.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 1500 HD20016.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 1500 HD20026.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 250019995.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 250019996.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 250020005.3L(325) V8
CHEVROLETAuto and Light TruckSILVERADO 250020006.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 250020016.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 250020026.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20016.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20016.6L(403) V8 (Diesel)
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20018.1L(496) V8
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20026.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20026.6L(403) V8 (Diesel)
CHEVROLETAuto and Light TruckSILVERADO 2500 HD20028.1L(496) V8
CHEVROLETAuto and Light TruckSILVERADO 350020016.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 350020016.6L(403) V8 (Diesel)
CHEVROLETAuto and Light TruckSILVERADO 350020018.1L(496) V8
CHEVROLETAuto and Light TruckSILVERADO 350020026.0L(364) V8
CHEVROLETAuto and Light TruckSILVERADO 350020026.6L(403) V8 (Diesel)
CHEVROLETAuto and Light TruckSILVERADO 350020028.1L(496) V8
CHEVROLETAuto and Light TruckSUBURBAN20005.3L(323) V8
CHEVROLETAuto and Light TruckSUBURBAN20006.0L(364) V8
CHEVROLETAuto and Light TruckSUBURBAN20015.3L(323) V8
CHEVROLETAuto and Light TruckSUBURBAN20016.0L(364) V8
CHEVROLETAuto and Light TruckSUBURBAN20018.1L(496) V8
CHEVROLETAuto and Light TruckSUBURBAN20025.3L(323) V8
CHEVROLETAuto and Light TruckSUBURBAN20026.0L(364) V8
CHEVROLETAuto and Light TruckSUBURBAN20028.1L(496) V8
CHEVROLETAuto and Light TruckTAHOE20004.8L(294) V8
CHEVROLETAuto and Light TruckTAHOE20005.3L(325) V8
CHEVROLETAuto and Light TruckTAHOE20014.8L(294) V8
CHEVROLETAuto and Light TruckTAHOE20015.3L(325) V8
CHEVROLETAuto and Light TruckTAHOE20024.8L(294) V8
CHEVROLETAuto and Light TruckTAHOE20025.3L(325) V8
CHEVROLET / GMCMedium & Heavy-Duty TruckAll Models (By Engine) - Diesel2001GM 6.6L(400) V8 Dsl
CHEVROLET / GMCMedium & Heavy-Duty TruckAll Models (By Engine) - Diesel2002GM 6.6L(400) V8 Dsl
GMCAuto and Light TruckC / K / R / V SERIES PICKUPS20018.1L(496) V8
GMCAuto and Light TruckC / K / R / V SERIES PICKUPS20028.1L(496) V8
GMCAuto and Light TruckSAVANA VANS20014.3L(262) V6
GMCAuto and Light TruckSAVANA VANS20015.0L(305) V8
GMCAuto and Light TruckSAVANA VANS20015.7L(350) V8
GMCAuto and Light TruckSAVANA VANS20016.5L(395) V8 (Diesel)
GMCAuto and Light TruckSAVANA VANS20018.1L(496) V8
GMCAuto and Light TruckSAVANA VANS20024.3L(262) V6
GMCAuto and Light TruckSAVANA VANS20025.0L(305) V8
GMCAuto and Light TruckSAVANA VANS20025.7L(350) V8
GMCAuto and Light TruckSAVANA VANS20026.5L(395) V8 (Diesel)
GMCAuto and Light TruckSAVANA VANS20028.1L(496) V8
GMCAuto and Light TruckSIERRA 150019994.3L(262) V6
GMCAuto and Light TruckSIERRA 150019994.8L(294) V8
GMCAuto and Light TruckSIERRA 150019995.3L(325) V8
GMCAuto and Light TruckSIERRA 150020004.3L(262) V6
GMCAuto and Light TruckSIERRA 150020004.8L(294) V8
GMCAuto and Light TruckSIERRA 150020005.3L(325) V8
GMCAuto and Light TruckSIERRA 150020014.3L(262) V6
GMCAuto and Light TruckSIERRA 150020014.8L(294) V8
GMCAuto and Light TruckSIERRA 150020015.3L(325) V8
GMCAuto and Light TruckSIERRA 150020024.3L(262) V6
GMCAuto and Light TruckSIERRA 150020024.8L(294) V8
GMCAuto and Light TruckSIERRA 150020025.3L(325) V8
GMCAuto and Light TruckSIERRA 1500 HD20016.0L(364) V8
GMCAuto and Light TruckSIERRA 1500 HD20026.0L(364) V8
GMCAuto and Light TruckSIERRA 250019995.3L(325) V8
GMCAuto and Light TruckSIERRA 250019996.0L(364) V8
GMCAuto and Light TruckSIERRA 250020005.3L(325) V8
GMCAuto and Light TruckSIERRA 250020006.0L(364) V8
GMCAuto and Light TruckSIERRA 250020016.0L(364) V8
GMCAuto and Light TruckSIERRA 250020026.0L(364) V8
GMCAuto and Light TruckSIERRA 2500 HD20016.0L(364) V8
GMCAuto and Light TruckSIERRA 2500 HD20016.6L(403) V8 (Diesel)
GMCAuto and Light TruckSIERRA 2500 HD20018.1L(496) V8
GMCAuto and Light TruckSIERRA 2500 HD20026.0L(364) V8
GMCAuto and Light TruckSIERRA 2500 HD20026.6L(403) V8 (Diesel)
GMCAuto and Light TruckSIERRA 2500 HD20028.1L(496) V8
GMCAuto and Light TruckSIERRA 350020016.0L(364) V8
GMCAuto and Light TruckSIERRA 350020016.6L(403) V8 (Diesel)
GMCAuto and Light TruckSIERRA 350020018.1L(496) V8
GMCAuto and Light TruckSIERRA 350020026.0L(364) V8
GMCAuto and Light TruckSIERRA 350020026.6L(403) V8 (Diesel)
GMCAuto and Light TruckSIERRA 350020028.1L(496) V8
GMCAuto and Light TruckSIERRA DENALI20026.0L(364) V8
GMCAuto and Light TruckYUKON20004.8L(294) V8
GMCAuto and Light TruckYUKON20005.3L(325) V8
GMCAuto and Light TruckYUKON20014.8L(294) V8
GMCAuto and Light TruckYUKON20015.3L(325) V8
GMCAuto and Light TruckYUKON20016.0L(364) V8
GMCAuto and Light TruckYUKON20024.8L(294) V8
GMCAuto and Light TruckYUKON20025.3L(325) V8
GMCAuto and Light TruckYUKON20026.0L(364) V8
GMCAuto and Light TruckYUKON XL20005.3L(325) V8
GMCAuto and Light TruckYUKON XL20006.0L(364) V8
GMCAuto and Light TruckYUKON XL20015.3L(325) V8
GMCAuto and Light TruckYUKON XL20016.0L(364) V8
GMCAuto and Light TruckYUKON XL20018.1L(496) V8
GMCAuto and Light TruckYUKON XL20025.3L(325) V8
GMCAuto and Light TruckYUKON XL20026.0L(364) V8
GMCAuto and Light TruckYUKON XL20028.1L(496) V8

Replaces These Part Numbers

AC DELCO321-1749, 321-1803, 321-1813, 321-1816, 321-2123, 334-2481, 334-2481A, 334-2517
ACECA8234-4-14, CA8235-4-14
ARROWHEADADR0279, ADR0217, 400-12172
BARSANCO110-8237
CARGO112853
DELCO10464405, 10464443, 10464453, 10464456, 10480234, 10480390, 15750871, 15768830
DELPHIRM1366
DIXIEA-1549
DIXIE NEWA-1549N
EMS8237N
FAMILYAD244
J&N Electrical Products400-12172
LESTER8237, 8274
MINNPAR47-1921, 47-1964
NAPA POWER NEW1N-4801
NAPA POWER PREMIUM PLUS213-4801, 213-4807, 213-4811
NAPA POWER SUPREME13-4801, 13-4807, 13-4811
NSAALT-1500
PIC240-6410, 240-6410A, 240-6410B, 240-6418
RCP42934
REMY LIGHT DUTY21749, 21816
REMY LIGHT DUTY NEW91606, 91608
UNIPOINTALT-1500
USA INDUSTRIES8237
WAGNER423016
WAI1-2221-21DR, 1-2419-21DR
WILSON90-01-4385, 90-01-4386, 90-01-4682
WILSON HD90-01-4385
WILSON NEW90-01-4385, 90-01-4385N, 90-01-4682

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.

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