Skip to content
icon-X
Close menu
Home
About
Alternators
Accessories
Merch
FAQ
Contact
Dealers
Receive a Quote
Instructions
Return Requests
Warranty & Other Policies
Privacy Policy
Blog
Log in
instagram
Instagram
Facebook
YouTube
Receive a Quote
Instructions
Return Requests
Warranty & Other Policies
Privacy Policy
Blog
instagram
Instagram
Facebook
YouTube
icon-search
Search
icon-hamburger
Site navigation
account
Log in
icon-search
Search
Cart
Home
About
Alternators
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
4.8L
Customers rate us 4.8/5 based on 152 reviews.
Select Vehicle
Select Vehicle
view all
Vehicle Make
Search
Dodge
GMC
Marine
Vehicle Model
Search
Blazer
G25
G35
K20
Suburban
Tahoe
Yukon
Vehicle Year
Search
1999-2004
2005-2009
1996-2004
2005-2020
2005-2013
1987-2004
2006-2007
2005-2017
2009
1966
1967-1971
1975-1978
1980-1986
1963-1966
1967
1970-1971
1973-1974
1973
1975-1979
1975-1980
1975-1981
1979-1980
1983-1986
1987-1988
2000-2004
1987
1968 1974
1967 1978
1968 1978
1967 1980
1968 1986
1967 1986
1968 1984
1967 1974
1974 1978
1974
1973 1982
1967 1976
1967 1989
2003 2017
2007
1968 1972
1963 1967
Vehicle Liter Engine
Search
5.7L
4.8L
3.8L
4.1L
4.3L
5.0L
5.3L
6.0L
clear
Amperage
250 amp alternator
(109)
320 amp alternator
(109)
370 amp alternator
(22)
400 amp alternator
(22)
250 amps 6 phase hairpin
(13)
320 amps 6 phase hairpin
(12)
370 amps 6 phase hairpin
(5)
400 amps 6 phase hairpin
(5)
Price
Filter
icon-X
Close menu
Select Vehicle
Select Vehicle
view all
Vehicle Make
Search
Dodge
GMC
Marine
Vehicle Model
Search
Blazer
G25
G35
K20
Suburban
Tahoe
Yukon
Vehicle Year
Search
1999-2004
2005-2009
1996-2004
2005-2020
2005-2013
1987-2004
2006-2007
2005-2017
2009
1966
1967-1971
1975-1978
1980-1986
1963-1966
1967
1970-1971
1973-1974
1973
1975-1979
1975-1980
1975-1981
1979-1980
1983-1986
1987-1988
2000-2004
1987
1968 1974
1967 1978
1968 1978
1967 1980
1968 1986
1967 1986
1968 1984
1967 1974
1974 1978
1974
1973 1982
1967 1976
1967 1989
2003 2017
2007
1968 1972
1963 1967
Vehicle Liter Engine
Search
5.7L
4.8L
3.8L
4.1L
4.3L
5.0L
5.3L
6.0L
clear
Amperage
250 amp alternator
(109)
320 amp alternator
(109)
370 amp alternator
(22)
400 amp alternator
(22)
250 amps 6 phase hairpin
(13)
320 amps 6 phase hairpin
(12)
370 amps 6 phase hairpin
(5)
400 amps 6 phase hairpin
(5)
Price
icon-filter
Select Vehicle
122 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
1973-1974 Chevrolet C10 Suburban L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet C20 Pickup L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet G20 Van L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet G30 Van L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet K10 Pickup L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet K20 Pickup L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet K30 Pickup L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet P20 Van L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1974 Chevrolet P30 Van L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1982 Chevrolet C20 Suburban L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1973-1982 Chevrolet K20 Suburban L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1974 GMC G2500 4.8L 12si 250-320amp High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1974 GMC G3500 4.8L 12si 250-320amp High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1974-1978 GMC G25 4.8L 12si 250-320amp High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1974-1978 GMC G35 4.8L 12si 250-320amp High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1978 Chevrolet G20 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1979 Chevrolet G30 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1980 Chevrolet K10 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1980 Chevrolet P10 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1981 Chevrolet C10 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1986 Chevrolet C20 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1986 Chevrolet C30 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1986 Chevrolet K20 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1989 Chevrolet P20 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1975-1989 Chevrolet P30 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1980-1986 Chevrolet K30 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1983-1986 Chevrolet C35 L6 4.8L High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Sale
1987 Chevrolet V20 L6 4.8L 12si High Output Alternator
Regular price
$459.00
Sale price
from $359.00
Save $100.00
Previous
1
2
3
4
5
icon-chevron
Next
icon-X
"Close (esc)"
icon-X
icon-chevron
icon-X
4.8L