Alternator
Every car and truck has a battery in order to start the engine and power the vehicle electrical system, and needs a way to keep it charged. While a battery charger can be used, it requires remembering to plug it into an outlet and connect it to the vehicle battery for minutes or hours. However, an alternator allows you to keep the vehicle battery charged while you drive, using the engine. This component is belt-driven and creates an AC current that is converted to the required vehicle DC current through brushes, coils of wire, and a rectifier within the alternator housing. When the battery voltage is reached (for example 12.6-14 volts on a 12-volt battery), the alternator regulator stops the flow of power to the battery.
When an alternator repair or replacement is required for a factory stock application, the vehicle year, make, model, and engine needs to be confirmed for proper fitment and operation. For custom applications, the correct charging amperage needs to match the vehicle electrical system's needs and the alternator needs to have adapter brackets in order to properly bolt it to the engine and align it with the crankshaft pulley.
Available from JEGS is a large alternator selection from the best manufacturers available including Tuff Stuff, Powermaster, ACDelco, Denso, JEGS, and many more. Each alternator is manufactured from high-quality components and assembly for reliable charging performance.
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1-Wire GM Alternator140 AMP Output 12 Volt GM 10Si Internal Regulator 5/16 in. -18 (± Ø.3125 in.) Stud Terminal Size Natural Finish Includes:
- 3/8 in. W x 2.33 in. O.D. Single Groove V-Belt Pulley
- Fan
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$161.99
$146.99
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(18)
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Ford 1-Wire Alternator100 amp Output 12 Volt GM 10Si Style Internal Regulator 5/16 in. -18 (.3125 in.) Stud Terminal Size Natural Finish Includes:
- Single Groove V-Belt Pulley
- Fan without Baffle
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$137.99
$124.99
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(29)
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1-Wire GM Alternator140 AMP Output 12 Volt GM 10si Internal Regulator 5/16 in.-18 Stud Terminal Size Chrome Plated Finish Includes:
- 3/8 in. W x 2.330 in. O.D. Single Groove V-Belt Pulley
- Fan
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$203.99
$184.99
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(50)
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Ford 1-Wire Alternator140 amp Output 12 Volt GM 10Si Style Internal Regulator 5/16 in. -18 (.3125 in.) Stud Terminal Size Natural Finish Includes:
- Single Groove V-Belt Pulley
- Fan without Baffle
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$179.99
$170.99
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(9)
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1-Wire GM Alternator100 AMP Output 12 Volt GM 10si Internal Regulator Chrome Plated Finish Includes:
- Single Groove V-Belt Pulley
- Fan
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$159.99
$144.99
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(23)
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Officially Licensed Mopar Alternator110 Amp Internal Regulator 1-Wire Functionality Single Groove V-Belt Pulley Black Crinkle Finish
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$233.95
(9)
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1-Wire GM Alternator140 AMP Output 12 Volt GM 10si Internal Regulator 5/16 in. -18 (± Ø.3125 in.) Stud Terminal Size Chrome Plated Finish Includes:
- 6-Rib Serpentine Belt Pulley
- Cooling Fan
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$193.99
$175.99
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(5)
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1-Wire GM Alternator100 AMP Output 12 Volt GM 10Si Internal Regulator 5/16 in. -18 (± Ø.3125 in.) Stud Terminal Size Natural Finish Includes:
- 3/8 in. W x 2.330 in. O.D. Single Groove V-Belt Pulley
- Fan
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$153.99
$139.99
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(7)
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Ford 1-Wire Alternator140 amp Output 12 Volt GM 10Si Style Internal Regulator 5/16 in. -18 (.3125 in.) Stud Terminal Size Black Finish Includes:
- Serpentine Belt Pulley
- Fan without Baffle
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$260.99
$163.99
SAVE $97.00
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Lightning-Bolt 100 Amp Mini-AlternatorOver 80 Amps at Idle to Over 100 at Top End 1-Wire 12 Volt Hook-Up Internal Regulator 98 mm Stator 100 Amp Internal Fan 2 3/4 in. V-Belt Pulley Lightweight Only 7 lbs. Aluminum
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$252.95
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GM 1-Wire Alternator100 Amp Output 12 V GM 10Si Internal Regulator 5/16 in. -18 Stud Terminal Size Natural Finish Includes:
- 2 in. O.D. Single 6-Rib Serpentine Pulley
- Fan
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$130.99
$126.99
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(3)
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Proform 141-146
Proform 141-146 Slant-Edge Alternator with Raised Bowtie Emblem for Chevy Small Block, Big Block V8 Engines [Crinkle Black]
Slant-Edge AlternatorChevy Small Block, Big Block V8 Engines 100 Amp GM 10si Style 12 Volt 1-Wire Connection Internal Regulator Raised Bowtie Emblem Crinkle Black Finish Sold Individually
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$269.95
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Proform 141-148
Proform 141-148 Slant-Edge Alternator with Raised Bowtie Emblem for Chevy Small Block, Big Block V8 Engines [Orange]
Slant-Edge AlternatorChevy Small Block, Big Block V8 Engines 100 Amp GM 10si Style 12 Volt 1-Wire Connection Internal Regulator Raised Bowtie Emblem Orange Finish Sold Individually
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$269.95
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AlternatorGM Applications V-Belt Pulley 1-Wire Capable 12-Volt Only Internally Regulated 160 Amp CS130 Style Case Chrome Finish Sold Individually
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$139.99
(1)
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Officially Licensed Mopar Alternator110 Amp Internal Regulator 1-Wire Functionality Single Groove V-Belt Pulley Chrome Finish
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$233.95
(6)
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1-Wire Micro Mini GM Alternator 55 Amp 12-Volt Single One Groove V-Belt Pulley 5.43 in. c-c Mounting Holes Sold Individually
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$207.39
$189.99
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(2)
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GM CS130D 5.31" Rear Post AlternatorBlack 165 Amp Serpentine 6-Groove Pulley OEM Wiring With PLIS Style Plug & One Wire Camaro/Firebird
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$239.99
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1-Wire GM Alternator100 AMP Output 12 Volt GM 10si Internal Regulator Black Finish Includes:
- Single 6-Rib Serpentine Pulley
- Fan
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$160.99
$145.99
SAVE $15.00
(4)
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1-Wire Micro Mini GM Alternator 55 Amp 16 V Single-Groove V-Belt 5.430 in. C-C Mounting HolesIncludes:
- (1) 2.700 in. Pulley
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$224.99
$209.99
SAVE $15.00
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1-Wire GM Alternator100 AMP Output 12 Volt GM 10si Internal Regulator Chrome Plated Finish Includes:
- Single Groove V-Belt Pulley
- Baffle
- Turbo Fan
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$140.99
$120.99
SAVE $20.00
(12)
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1-Wire Mini GM Alternator12 Volt 74 Amp 1-Wire Hook-Up Single One Groove V-Belt Pulley 6.125 in. Bolt Hole Spacing Center to Center Cast Aluminum Case Natural Finish
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$165.99
$151.99
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(1)
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1-Wire GM AlternatorLS-Series 145 AMP Output 12 Volt GM 12S Internal Regulator 5/16 in. -18 (.3125 in.) Stud Terminal Size Natural Finish Includes:
- 2 in. O.D. Single 6-Rib Serpentine Pulley
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$332.99
$301.99
SAVE $31.00
(2)
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1-Wire GM Alternator100 AMP Output 12 Volt GM 10si Internal Regulator Black Finish Includes:
- Single Groove V-Belt Pulley
- Fan
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$133.49
$131.99
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(10)
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Ford Alternator100 Amp 1-Wire 12 Volt GM 10Si Style Internal Regulator 5/16 in.-18 (0.3125 in.) Stud Terminal Size Black Body Includes:
- Black Single Groove V-Belt Pulley
- Black Fan and Baffle
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$147.99
$134.99
SAVE $13.00
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JEGS 10169
JEGS
1-Wire Ford Alternator 140 Amp Output with Serpentine Belt Pulley [Chrome Plated Finish]
1-Wire Ford Alternator140 Amp Output 12 V GM 10Si Style Internal Regulator 5/16 in.-18 Stud Terminal Size Chrome Plated Finish Includes:
- Serpentine Belt Pulley
- Fan Without Baffle
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$193.99
$175.99
SAVE $18.00
(1)
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