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Alternators: Giving Your Car the Volts it Needs

Your vehicle’s charging and starting system is a complex web of sensors, regulators, storage systems, and generators. Some of the key components in this system that keep it operating at peak performance include the starter, voltage regulators, alternator, and battery.

The alternator plays a big role in the vehicle’s charging system. Your battery requires approximately a 12-volt charge to start the vehicle and aid in running the various accessories. Without a constant slow charge, the battery would likely die within minutes. The alternator prevents this by delivering 13.5 to 14.5 volts to the electrical system while the engine runs. This allows the various electrical components to operate while the battery uses the excess voltage to recharge.

Because the alternator plays a crucial role in your starting and charging system, immediately replacing a weak or failed alternator is essential. But not all alternators are equal. You’ll want to ensure it lasts a long time by purchasing a high-quality replacement part.

Get Genuine Replacement Alternators at AutoNation Parts

If your vehicle struggles to start, you may need a new alternator. Fortunately, AutoNation Parts can help with a huge selection of high-quality alternators for various makes and models. You can order ours online right from home and have it shipped to your front door.

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13561039 - : F (S)Generator for GM Image

F (S)Generator

Colorado. 2.7l. 170a. Canyon. 2.7l. 170a.
$230.75
MSRP $369.20
Save $138.45
37.5% Off
11610448 - : M8x1.25x75.8mm Multi-Purpose Bolt for GM Image

M8x1.25x75.8mm Multi-Purpose Bolt

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$5.53
MSRP $7.52
Save $1.99
26.5% Off
11589134 - : M8x1.25x126.8 Multi-Purpose Bolt for GM Image

M8x1.25x126.8 Multi-Purpose Bolt

Auxiliary, 6.6L gas, #3. 3.0L. 2.0L. 2017-21 3.6L. #4. #1 2.4L. This GM Genuine Part is designed, engineered, and tested to rigorous...
$8.73
MSRP $11.85
Save $3.12
26.3% Off
11548514 - : M8x1.25x117 Alternator Bolt for GM Image

M8x1.25x117 Alternator Bolt

With eassist. #3. 5.3L, with eassist. M8x117. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is...
$3.57
MSRP $4.82
Save $1.25
25.9% Off
11611384 - : Alternator Bolt for GM Image

Alternator Bolt

4.3, 5.3, 6.2L, long. Primary, 6.6L gas, 10x162mm. Without eassist with r-134a. #3. 5.3L, without eassist 6.2L. M10x192. Without eassist...
$8.21
MSRP $11.15
Save $2.94
26.4% Off
88987713 - : Multi-Function Diode for GM Image

Multi-Function Diode

Fuse box, engine compartment. Relays & modules, engine compartment. Underhood. This GM Genuine Part is designed, engineered, and tested...
$12.15
MSRP $18.76
Save $6.61
35.2% Off
97356246 - : Alternator Bracket for GM Image

Alternator Bracket

6.6L diesel. Support bracket. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General...
$28.75
MSRP $39.76
Save $11.01
27.7% Off
13563313 - : Generator for GM Image

Generator

Silverado, Sierra 2500 HD. Gas. Single generator. 170 amp. Silverado, Sierra 3500 HD. Single Alternator. 170 Amp.. Stamped #13539727.
$250.26
MSRP $430.48
Save $180.22
41.9% Off
85063115 - : Alternator for GM Image

Alternator

Escalade. Yukon XL. 5.3l. 250a. Yukon. 4wd. 5.3l. 250a. 6.2L supercharged. 4.3, 5.3, 6.2L, 250 amp. With supercharger. All.
$348.84
MSRP $544.52
Save $195.68
35.9% Off
11515758 - : Multi-Purpose Bolt for GM Image

Multi-Purpose Bolt

This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$1.70
MSRP $2.30
Save $0.60
26.1% Off
24589834 - : Generator Bracket Bushing for GM Image

Generator Bracket Bushing

2.8L turbo diesel. Alternator Bracket Sleeve.
$3.95
MSRP $5.34
Save $1.39
26% Off
11518921 - : Mount Bracket Bolt for GM Image

Mount Bracket Bolt

3.1L, upper. 6 cylinder, upper mount bolt. 3.4L. 4.3L (2018-25) 6.6L gas. m10x150.
$31.46
MSRP $43.64
Save $12.18
27.9% Off
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