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GMC S15 Jimmy Alternator

We have 8 Items In-stock. Select a year to continue.
$33.20 List Price $60.84 Save $27.64 Availability: In Stock
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NEW ALTERNATOR, 12 VOLTS

This brand new OE Replacement Alternator is constructed from top quality components and designed to withstand extreme heat and high electrical demands. Best of all, no core charges - eliminates the hassle of returning your old part for core refund!

Specifications:
  • 52 mm OD
  • 11:00 plug clock
  • 100 amps
  • External fan
  • 6-groove serpentine pulley
  • Internally regulated

Replacement brand parts are the most affordable solution for your replacement needs! Replacement specializes in a wide range of OE replacement auto parts including body parts, lighting, electrical, brakes, suspension, intake, exhaust, cooling and heating parts. All Replacement brand items are backed by 1-year, unlimited-mileage warranty.

  • SKU#: REPC330126
  • Brand: Replacement
  • Product Color/Finish: Factory finish
  • Amperage Output: 100
  • Number of Grooves: 6
  • Pulley Type: Serpentine
  • Recommended Use: OE Replacement
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1988 | 4 Cyl 2.5L | Timberline
  • 1987-1988 | 4 Cyl 2.5L | Base, Gypsy, Sierra Classic
(see more)
$89.01 List Price $105.03 Save $16.02 Availability: In Stock
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QUALITY-BUILT SUPREME ALTERNATOR, NEW

Quality-Built Supreme Alternators are engineered from the ground up to deliver unsurpassed reliability with each turn of the key. Every Quality-Built product offers maximum dependability for virtually every car on the road, import, and domestic. Manufactured under strict QS-9000 quality guidelines that signifies the highest quality standard achievable for automotive parts suppliers.

Specifications:
  • 100 amps
  • External fan
  • Internally regulated
  • 6-groove serpentine pulley
  • Replaces OE Delco unit
Features:
  • Engineered to improve upon OE performance and durability
  • Designed and built for unsurpassed reliability
  • 100 percent new housings and components with the design expertise that comes from countless durability tests and analysis
  • SKU#: MPA8116607N
  • Brand: Quality-Built
  • Product Color/Finish: Factory finish
  • Amperage Output: 100
  • Number of Grooves: 6
  • Pulley Type: Serpentine
  • Recommended Use: OE Replacement
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1991 | 6 Cyl 4.3L | SLE, SLS, SLT
  • 1988-1991 | 6 Cyl 4.3L | Base
(see more)
$91.60 List Price $108.09 Save $16.49 Availability: In Stock
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USA INDUSTRIES ALTERNATOR, NEW

USA Industries Alternator is guaranteed to fit perfectly just like your OE alternator. It is designed to deliver optimum reliability and durability.

Features:
  • All components are 100% new
  • State of the art computer tested for extreme operating conditions
  • Graphics packaging and unit shrink to avoid any shipping damage
  • Manufactured to surpass OE specifications
Specifications:
  • Serpentine type pulley
  • 85/105 Amp
  • SKU#: USI508761
  • Brand: USA Industries
  • Fit Note: Delco
  • Product Color/Finish: Factory finish
  • Amperage Output: 85/105
  • Number of Grooves: 5
  • Pulley Type: Serpentine
  • Recommended Use: OE Replacement
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1991 | All Engines | SLE, SLS, SLT
  • 1990-1991 | All Engines | Base
(see more)
$86.10 List Price $101.60 Save $15.50 Availability: In Stock Core Deposit: $9.76
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BOSCH PROFESSIONAL PREFERRED ALTERNATOR, REMANUFACTURED -- Designed with 100 percent tested rectifier, voltage regulator and new high quality bearings; Features 100 percent exhaustive multipoint quality and performance testing; Ensures cranking and starting performance under all temperature extremes; Provides longer life and vibration free, quiet operation; Delivers increased brush life and reduced electrical interference on computer controlled vehicles; Ensures stable voltage output and eliminates short and open circuits; Provides unsurpassed reliability under extreme conditions; With 2-year Bosch warranty.
  • SKU#: BSAL531X
  • Brand: Bosch
  • Product Color/Finish: Factory finish
  • Amperage Output: 42
  • Number of Grooves: Not applicable
  • Pulley Type: V-belt
  • Recommended Use: OE Replacement
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1983 | 4 Cyl 1.9L | Base, Gypsy, Sierra Classic
$248.53 List Price $293.27 Save $44.74 Availability: In Stock
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POWERMASTER HIGH-PERFORMANCE ALTERNATORS FOR GM ENGINES

Making upgrades to your classic GM vehicle but you want to retain the original look? Reinforce your vehicle’s electrical system with a Powermaster High-Performance Alternator to keep the classic GM look under hood but with reliable state-of-the-art innards. If your vehicle is equipped with a powerful aftermarket audio system, your stock alternator will be underpowered and overburdened at times by trying to supply power to both electronics and your engine. This causes your vehicle’s lights to dim and battery to drain. Installing a Powermaster High-Performance Alternator on a modified engine will provide the extra electrical power needed, starting from idle all the way to the redline. Powermaster is best known as a specialist performance manufacturer, providing high performance alternators and starters primarily for American cars, trucks and SUVs.

  • Manufactured in the U.S.A
  • Perfect for classic GM restorations
  • Popular GM cases such as CS130, 12SI and 17SI and many others are all made by Powermaster
  • Excellent idle output
  • Choose from five finishes chrome, satin, natural, black or polished
  • Choice of 1-wire or original 3-wire style installations
  • Every Powermaster alternator is tested before it leaves the factory, (certificate of testing included)
  • SKU#: P6667461
  • Brand: Powermaster
  • Quantity Sold: Sold Individually
  • Product Color/Finish: Polished
  • Amperage Output: 140
  • Number of Grooves: 6
  • Pulley Type: Serpentine
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1991 | 6 Cyl 4.3L | SLE, SLS, SLT
  • 1990-1991 | 6 Cyl 4.3L | Base
(see more)
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$102.95 List Price $297.56 Save $194.61 Availability: In Stock Core Deposit: $48.80
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100 Amp
  • SKU#: W0133-1793600
  • Brand: Denso
 
Fits the following GMC S15 Jimmy Years:
  • 1990-1991 | All Engines | All Submodels
$90.62 List Price $106.93 Save $16.31 Availability: In Stock Core Deposit: $18.79
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AC DELCO ALTERNATOR, REMANUFACTURED -- 63 amps; A high quality, direct fit OE replacement alternator; With Lifetime AC Delco limited warranty.
  • SKU#: AC321-39
  • Brand: AC Delco
  • Product Color/Finish: Factory finish
  • Amperage Output: 63
  • Number of Grooves: Not applicable
  • Pulley Type: V-belt
  • Recommended Use: OE Replacement
(see more)
Fits the following GMC S15 Jimmy Years:
  • 1983 | 6 Cyl 2.8L | Base, Gypsy, Sierra Classic
Rating: (see review/s)

"The alternator was the right one with the exception that it didnt truly fit the engine properly....the back bolt position was wrong and thus had to be modified to fit. Given ALL the specs required this should NOT HAPPEN; and given I bought the more expensive OEM part that should have been EXACT...BUT WASNT. cLOSE IS not good enough WHEN DEALING WITH VITAL ENGINE PARTS so more care and attention is really in order here...." posted by: videojoe on June 17, 2013

$83.95 List Price $259.94 Save $175.99 Availability: In Stock
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WSO -World Source One New Alternator

The WSO alternator is 100% new and guarantees the same quality fit and performance of the original equipment it replaces
  • OEM-Quality Direct Fit Application.
  • Brand new with no remanufactured parts.
  • Utilizes the latest OE technologies.
  • Provides a long, dependable service life.
Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.


  • SKU#: W0133-1693070
  • Brand: World Source One
  • Fit Note: Inc. 6-Groove Pulley
  • Number of Grooves: 5
  • Pulley Type: Serpentine
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
 
Fits the following GMC S15 Jimmy Years:
  • 1988-1989 | 6 Cyl 4.3L | Base, Gypsy, Sierra Classic, Timberline
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