Alternator

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Duralast Gold New Alternator DLG1931-6-11
$
191
99
+$50.00 Refundable Core Depositinfo
  • Part # DLG1931-6-11
  • SKU # 526945
$
191
99
+$50.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG7273
$
119
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7273
  • SKU # 120237
  • Application: Without A/C
    Notes: 78 amp. Designed for maximum durability 100% new
$
119
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator ADLG2343-6-1
$
335
99
+$40.00 Refundable Core Depositinfo
  • Part # ADLG2343-6-1
  • SKU # 346851
  • Notes: 130 amp. Designed for maximum durability 100% new
$
335
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1386-6-7
$
149
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1386-6-7
  • SKU # 115401
  • Application: Except Police or Taxi package
    Notes: 105 Amp. Designed for maximum durability 100% new
$
149
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG5504-6
$
165
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
$
165
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG7748-10
$
137
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7748-10
  • SKU # 157038
  • Application: With A/C
    Notes: 75 amp. Designed for maximum durability 100% new
$
137
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5503-7
$
174
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5503-7
  • SKU # 120257
  • Notes: 90 Amp. With 125mm (4 15/16") Diameter alternator Case. Designed for maximum durability 100% new
$
174
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG1345-6-7
$
146
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1345-6-7
  • SKU # 82557
  • Notes: 105 Amp. With 130mm (5 1/8") Diameter alternator Case. Designed for maximum durability 100% new
$
146
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1351-1-3
$
132
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1351-1-3
  • SKU # 228698
$
132
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG2420-16-12
$
278
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG2420-16-12
  • SKU # 630662
  • Application: Police Interceptor model
    Notes: 215 amp. Designed for maximum durability 100% new
$
278
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG7748-2
$
128
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7748-2
  • SKU # 157039
$
128
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG1468-16-4
$
165
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1468-16-4
  • SKU # 740988
  • Notes: 140 amp. Designed for maximum durability 100% new
$
165
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5571-6-12
$
291
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5571-6-12
  • SKU # 470936
  • Notes: 130 Amp. With Toyota OEM #27060-0F040. Designed for maximum durability 100% new
$
291
99
+$40.00 Refundable Core Depositinfo
Free Next Day Delivery Eligible
Duralast Gold New Alternator DLG3604-16-2
$
226
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3604-16-2
  • SKU # 532332
  • Notes: 135 amp. Designed for maximum durability 100% new
$
226
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG2668-8-10
$
363
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG2668-8-10
  • SKU # 470824
  • Application: With 146mm (5 3/4") diameter alternator case
    Notes: 220 amp. Denso equipped. Designed for maximum durability 100% new
$
363
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3407-16-1
$
212
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3407-16-1
  • SKU # 532322
  • Application: With Black Rear Cover on alternator
    Notes: 130 amp. Designed for maximum durability 100% new
$
212
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1496-6-1
$
181
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1496-6-1
  • SKU # 352178
  • Application: Without heated windshield
    Notes: 140 amp. Designed for maximum durability 100% new
$
181
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG3409-18-1
$
241
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG3409-18-1
  • SKU # 607433
  • Notes: 130 amp. Designed for maximum durability 100% new
$
241
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5646-6-11
$
248
99
+$75.00 Refundable Core Depositinfo
  • Part # DLG5646-6-11
  • SKU # 687233
  • Application: Denso equipped
    Notes: 130 amp. Designed for maximum durability 100% new
$
248
99
+$75.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG5507-17-3
$
195
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG5507-17-3
  • SKU # 120083
  • Notes: 117 Amp. Denso Equipped. With 125mm (4 15/16") Diameter alternator Case. Designed for maximum durability 100% new
$
195
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1455-6-10
$
181
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1455-6-10
  • SKU # 607417
$
181
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1346-4-3
$
143
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1346-4-3
  • SKU # 82558
  • Notes: 100 Amp. Designed for maximum durability 100% new
$
143
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG7747
$
166
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG7747
  • SKU # 120201
  • Notes: 80 Amp. Designed for maximum durability 100% new
$
166
99
+$40.00 Refundable Core Depositinfo
Duralast Gold New Alternator DLG1345-6-3
$
128
99
+$40.00 Refundable Core Depositinfo
  • Part # DLG1345-6-3
  • SKU # 115395
  • Notes: 105 Amp. Designed for maximum durability 100% new
$
128
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.