Shop Parts & Accessories

Shop Aftermarket

Shop Clearance

2004 Toyota Sienna

Change vehicle

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.

Tire AutoNation Parts

Tires, wheels, and more.

We can get you there

Filter

availability
Category
Brand
Product Type
Application
position
availability
Category
Brand
Product Type
Application
position
270600A13084 - Electrical: Alternator for Toyota Image

Alternator

Toyota 270600a13084
130 Amp. Alternator.
$244.43
MSRP $291.55
Save $47.12
16.2% Off
View Details
Fits Your Vehicle
270600A11084 - Electrical: Alternator for Toyota Image

Alternator

Toyota 270600a11084
Sienna. 150 amp. Alternator. This item is non-returnable.
$209.32
MSRP $249.67
Save $40.35
16.2% Off
View Details
Fits Your Vehicle
1251120020 - Electrical: Alternator Bracket for Toyota Image

Alternator Bracket

Toyota 12511-20020
3.0L, #2. 3.3L, #2. 3.3L, #1. Pulley,mount bracket. 6 cylinder. 3.0L, #1.
$219.88
MSRP $282.42
Save $62.54
22.1% Off
Fits Your Vehicle
1638520010 - Electrical: Alternator Spacer for Toyota Image

Alternator Spacer

Toyota 16385-20010
3.0 & 3.3L. 3.0L. Alternator,slider. 6 cylinder, 1992-94 radiator.
$11.33
MSRP $14.12
Save $2.79
19.8% Off
Fits Your Vehicle
274110A050 - Electrical: Alternator Pulley for Toyota Image

Alternator Pulley

Toyota 274110a050
Solara. 3.3l. Auto trans, without turbo. 4.7l. Camry. 3.0l. 3.0 & 3.3L. 100 amp. 130 amp. Camry. 3.3l. Alternator Pulley.
$62.39
MSRP $80.33
Save $17.94
22.3% Off
Fits Your Vehicle
9006810142 - Electrical: Alternator Bearing for Toyota Image

Alternator Bearing

Toyota 90068-10142
Part that bears friction from part rotation.
$28.67
MSRP $36.91
Save $8.24
22.3% Off
Fits Your Vehicle
125140A010 - Cooling System: Alternator Adjusting Bracket for Toyota Image

Alternator Adjusting Bracket

Toyota 12514-0A010
3.0L. Adjust bracket. 3.3L, alternator belt. 6 cylinder.
$30.22
MSRP $38.90
Save $8.68
22.3% Off
Fits Your Vehicle
125150A010 - Electrical: Alternator Bracket Bolt for Toyota Image

Alternator Bracket Bolt

Toyota 125150a010
3.0L. 3.3L.
$7.73
MSRP $9.63
Save $1.90
19.7% Off
Fits Your Vehicle
No Parts Found
Clear Your Vehicle Search for Another Vehicle
Or try a new Keyword Search in the bar above