Skip to content
icon-X
Close menu
Home
About
Alternators
Billet Alternators
Batteries
Accessories
Merch
FAQ
Contact
Dealers
Receive a Quote
Instructions
Return Requests
Warranty & Other Policies
Privacy Policy
Blog
Sitemap
Log in
instagram
Instagram
Facebook
YouTube
Receive a Quote
Instructions
Return Requests
Warranty & Other Policies
Privacy Policy
Blog
Sitemap
instagram
Instagram
Facebook
YouTube
icon-search
Search
icon-hamburger
Site navigation
account
Log in
icon-search
Search
Cart
Home
About
Alternators
Billet Alternators
Batteries
Accessories
Merch
FAQ
Contact
Dealers
Search
Search
Pause slideshow
Play slideshow
FREE SHIPPING
On all orders shipped within the United States
Hassle-free returns
90-day return policy
Lifetime Warranty
On JS Alternators employee labor and a one year warranty on parts
4.2L All High Output Alternators
Customers rate us 4.8/5 based on 216 reviews.
Select Vehicle
Select Vehicle
view all
Vehicle Make
Search
Buick
Chevrolet
Ford
GMC
Isuzu
Jeep
Mercury
Oldsmobile
Vehicle Model
Search
Ascender
Bravada
Cherokee
Chevrolet
Cj5
Cj6
Cj7
Envoy
Envoy Xuv
F 150
Ford
Grand Wagoneer
J10
J20
Monterey
Rainier
Scrambler
Trailblazer
Wagoneer
Wrangler
Vehicle Liter Engine
Search
4.2L
clear
Vehicle Year
Search
1975
1975-1983
1976
1976-1986
1976-1987
1980-1983
1981-1985
1984-1986
1987-1990
1997-2002
1997-2003
2002
2002-2004
2002-2006
2003
2003-2006
2003-2008
2003-2009
2004
2004-2006
2004-2005
2004-2007
2004-2009
2005
2005-2008
2005-2009
2006-2009
2007-2008
2007-2009
2009
2010
Collection
All High Output Alternators
clear
Amperage
250 amp alternator
(48)
320 amp alternator
(48)
370 amp alternator
(25)
400 amp alternator
(25)
Price
Filter
icon-X
Close menu
Select Vehicle
Select Vehicle
view all
Vehicle Make
Search
Buick
Chevrolet
Ford
GMC
Isuzu
Jeep
Mercury
Oldsmobile
Vehicle Model
Search
Ascender
Bravada
Cherokee
Chevrolet
Cj5
Cj6
Cj7
Envoy
Envoy Xuv
F 150
Ford
Grand Wagoneer
J10
J20
Monterey
Rainier
Scrambler
Trailblazer
Wagoneer
Wrangler
Vehicle Liter Engine
Search
4.2L
clear
Vehicle Year
Search
1975
1975-1983
1976
1976-1986
1976-1987
1980-1983
1981-1985
1984-1986
1987-1990
1997-2002
1997-2003
2002
2002-2004
2002-2006
2003
2003-2006
2003-2008
2003-2009
2004
2004-2006
2004-2005
2004-2007
2004-2009
2005
2005-2008
2005-2009
2006-2009
2007-2008
2007-2009
2009
2010
Collection
All High Output Alternators
clear
Amperage
250 amp alternator
(48)
320 amp alternator
(48)
370 amp alternator
(25)
400 amp alternator
(25)
Price
icon-filter
Select Vehicle
48 products
Sort
Sort
Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Sale
2004-2005 GMC Envoy XUV L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2006 Buick Rainier L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2006 Jaguar XK8 V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2007 Ford Freestar V6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2007 Mercury Monterey V6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2009 Jaguar Vanden Plas V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2009 Jaguar XJ8 V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2004-2009 Jaguar XJR V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2005 Saab 9-7x L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2005-2008 Ford F-150 V6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2005-2009 Jaguar Super V8 V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2006-2009 Land Rover Range Rover Sport V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2006-2009 Land Rover Range Rover V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2007-2008 Isuzu Ascender L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2007-2009 Chevrolet Trailblazer L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2007-2009 GMC Envoy L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2007-2009 Jaguar XK V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2007-2009 Saab 9-7x L6 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2009 Jaguar XF V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
2010 Jaguar XF V8 4.2L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Previous
1
2
icon-X
"Close (esc)"
icon-X
icon-chevron
icon-X
All High Output Alternators