Alternator

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Duralast Gold New Alternator DLG2642-8-10
$
311
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG2642-8-10
  • SKU # 146407
  • Application: Nippondenso equipped
    Notes: 160 Amp. Designed for maximum durability 100% new
$
311
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG7127M
$
87
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7127M
  • SKU # 352098
  • Notes: 63 amp. Designed for maximum durability 100% new
$
87
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3418-16-3
$
281
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3418-16-3
  • SKU # 120247
$
281
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5513-17-3
$
191
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5513-17-3
  • SKU # 148585
  • Application: Built to 06/26/2000
    Notes: 136 Amp. With 137mm (5 3/8") Diameter alternator Case. Designed for maximum durability 100% new
$
191
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3501-18-10
$
217
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3501-18-10
  • SKU # 209351
  • Notes: Standard (95 amp). Designed for maximum durability 100% new
$
217
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3635-16-2
$
237
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3635-16-2
  • SKU # 120117
  • Application: With Federal emission, With manual transmission
    Notes: 110 amp. Warning: Difficult Repair! Alternator replacement requires 2 people. Refer to repair manual for proper procedures. Designed for maximum durability 100% new
$
237
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3655-6-9
$
229
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3655-6-9
  • SKU # 34867
  • Notes: 135 amp. Designed for maximum durability 100% new
$
229
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5646-6-11
$
254
99
+$75.00 Refundable Core Depositinfo
  • Part # DLG5646-6-11
  • SKU # 687233
  • Application: Denso equipped
    Notes: 130 amp. Designed for maximum durability 100% new
$
254
99
+$75.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG2355-6-1
$
291
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG2355-6-1
  • SKU # 288009
  • Notes: 130 amp. Designed for maximum durability 100% new
$
291
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1648-5-11
$
171
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1648-5-11
  • SKU # 120248
$
171
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG2345-6-6
$
319
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG2345-6-6
  • SKU # 346826
$
319
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3424-16-3
$
233
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3424-16-3
  • SKU # 120119
$
233
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3518-16-2
$
175
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3518-16-2
  • SKU # 34863
  • Notes: 130 amp. Designed for maximum durability 100% new
$
175
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3640-16-1
$
242
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3640-16-1
  • SKU # 120253
$
242
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG7273
$
114
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7273
  • SKU # 120237
  • Application: With A/C
    Notes: 78 Amp. With single air pump; Without optional electrical equipment. Designed for maximum durability 100% new
$
114
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1912-6-11
$
201
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1912-6-11
  • SKU # 81508
  • Application: Delco equipped
    Notes: 160 Amp. Designed for maximum durability 100% new
$
201
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1649-6-11
$
182
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1649-6-11
  • SKU # 265024
  • Notes: 105 Amp. Designed for maximum durability 100% new
$
182
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5504-6
$
172
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5504-6
  • SKU # 120242
  • Notes: 120 Amp. With 137mm (5 3/8") Diameter alternator Case. Designed for maximum durability 100% new
$
172
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3644-16-10
$
242
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3644-16-10
  • SKU # 81507
  • Application: Without navigation system
    Notes: 110 Amp. Designed for maximum durability 100% new
$
242
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3642-16-2
$
212
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3642-16-2
  • SKU # 209352
  • Notes: 110 amp. With federal emissions. Warning: Difficult Repair! Alternator replacement requires 2 people. Refer to repair manual for proper procedures. Designed for maximum durability 100% new
$
212
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5642-7-4
$
298
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5642-7-4
  • SKU # 558253
  • Notes: 150 amp. Designed for maximum durability 100% new
$
298
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1342-6-7
$
147
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1342-6-7
  • SKU # 82555
$
147
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator ADLG3657-8-11
$
203
99
+$40.00 Refundable Core Depositinfo
  • Part # ADLG3657-8-11
  • SKU # 178701
  • Notes: With Ambulance package. 110 amp. Single alternator system. Designed for maximum durability 100% new
$
203
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1650-6-5
$
158
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1650-6-5
  • SKU # 241907
  • Notes: 105 Amp. With 130mm (5 1/8") Diameter alternator Case. Designed for maximum durability 100% new
$
158
99
+$40.00 Refundable Core Depositinfo

About

Alternator

You may be wondering, "What is an alternator?" Many car owners believe that the car abattery powers electric energy to your car. However, the battery only provides power to make the starter motor crank and start the engine. The alternator of your car's engine creates the power to not only run the car, but it also generates power for other components of your car. The alternator also charges your car battery since the vehicle requires a lot of power. Without an alternator, your car's battery will quickly run out of charge.

How Do Alternators Work?
Exactly how do alternators work? Since alternators convert mechanical energy to electric energy, you need to understand how they work. The alternator of your car is mounted on the block with either a bracket or with bolts. To create the required levels of electric energy, the alternator must be rotated. A rubber belt connects the alternator to the engine crank pulley. As the engine rotates, the belt turns the rotor found in the stator. The rotor and stator are made from copper and electric steel. The rotor also has an electric current flowing through it, which induces a magnetic field.

The magnetic field results in an electric current in the stator that winds the alternator. The current, in the form of AC, needs to be changed into DC. Diodes are used to create the DC voltage.



Signs of a Bad Alternator
If the alternator of your car is bad, you will notice a reduction in your car's performance. Signs of a bad alternator include dim or flickering headlights or interior dash lights, the check engine light, a dead battery, or other electrical issues. The engine can even stall while driving. If you’re experiencing any of these issues, you can open the hood to visually inspect the alternator for common problems or bring it in to AutoZone for testing.

Importance of Replacing Worn Alternators
Since being introduced to production cars with the 1960 Plymouth Valiant, the alternator has become one of the most important auto parts in modern cars. Without an alternator, your vehicle has no way to charge the battery. The alternator, driven by the crankshaft, generates AC power through electromagnetism. Electricity is channeled into the battery where it can provide the current needed to start the vehicle, or to run electronics like headlights or the radio. The alternator outputs between 13.5 and 14.8 volts to keep the battery 100% charged.

In addition to starting trouble, a worn alternator can impair the overall driving experience. Without enough current from the alternator, the battery can die even while you are driving.

The alternator is an essential part of your vehicle's electrical system. You need to check the components of this critical part for any damage. If you suspect the alternator is worn out, do not hesitate to contact AutoZone.