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Alternator Rectifier Bridge

1376 items

An alternator rectifier bridge uses diodes to convert alternating current into direct current for the vehicle's electrical system. Choose the bridge for the alternator design, comparing assembly layout, connections and mounting. It is a service component within the alternator rather than a complete alternator replacement.

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Alternator Rectifier Diode with Trio for 1996-1999 Audi A4Alternator Rectifier Diode with Trio for 1996-1999 Audi A4
A-Premium®Part # APALR157
Alternator Rectifier Diode with Trio for 1996-1999 Audi A4
52 Reviews
$29.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi A4: 1996 1997 1998 1999
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRAL
Note
【Note-1】 This item is a 14 Volt, 6–50A avalanche diode with 107 mm OD and an M8×49 mm battery post.
【Note-2】 This item comes with trio & "W" Terminal.
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Alternator Rectifier Diode with Trio for 1979-1981 Audi 5000
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1979-1981 Audi 5000
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi 5000: 1979 1980 1981
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523L8
Note
【Note-1】 14 Volt, 114mm OD, 6-35A Diodes, M6×52.5mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 2000-2002 Toyota Tundra
A-Premium®Part # APALR008
Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 2000-2002 Toyota Tundra
52 Reviews
$58.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Tundra: 2000 2001 2002
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Quantity1
Item LocatedUnited States
ConditionNew
item #101522TP
Note
【Note-1】 14 Volt, 117mm OD, 8-50 A Diodes, M6 Battery Post (31°).
【Note-2】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode for 1975-1979 1987 Chevrolet El Camino
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1975-1979 1987 Chevrolet El Camino
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet El Camino: 1975 1976 1977 1978 1979 1987
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Quantity1
Item LocatedUnited States
ConditionNew
item #101521ZH
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1975-1980 1982-1986 Chevrolet K5 Blazer
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1975-1980 1982-1986 Chevrolet K5 Blazer
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet K5 Blazer: 1975 1976 1977 1978 1979 1980 1982 1983 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #101522UX
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1987 Chevrolet V10 Suburban
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1987 Chevrolet V10 Suburban
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1987 Chevrolet V10 Suburban
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Quantity1
Item LocatedUnited States
ConditionNew
item #101521LG
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1989 Chevrolet R3500
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1989 Chevrolet R3500
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1989 Chevrolet R3500
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101525DT
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode with Trio for 1968-1971 BMW 2500
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1968-1971 BMW 2500
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 2500: 1968 1969 1970 1971
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101525PZ
Note
【Note-1】 14 Volt, 114mm OD, 6-35A Diodes, M6×52.5mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode for 2013-2017 Honda Accord
A-Premium®Part # APALR090
Alternator Rectifier Diode for 2013-2017 Honda Accord
52 Reviews
$43.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Accord: 2013 2014 2015 2016 2017
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183Z3N
Note
22 Volt, 114mm OD, 12-35A cell/Avalanche Diodes
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Alternator Rectifier Diode for 1993-1995 Volkswagen Corrado
A-Premium®Part # APALR019
Alternator Rectifier Diode for 1993-1995 Volkswagen Corrado
52 Reviews
$35.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Corrado: 1993 1994 1995
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZX8
Note
【Note-1】 12 Volt, 112mm OD, 8-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode with Aluminum Heat Sink for 1971-1974 Dodge B200 Van
A-Premium®Part # APALR150
Alternator Rectifier Diode with Aluminum Heat Sink for 1971-1974 Dodge B200 Van
52 Reviews
$14.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge B200 Van: 1971 1972 1973 1974
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184T6E
Note
【Note-1】 12 Volt, 3-35A Diodes.
【Note-2】 This item comes with Aluminum Heat Sink.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2015-2017 Kia K900
A-Premium®Part # APALR059
Alternator Rectifier Diode with Aluminum Heat Sinks for 2015-2017 Kia K900
52 Reviews
$34.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Kia K900: 2015 2016 2017
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SQKK
Note
This item comes With Aluminum Heat Sinks.
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Alternator Rectifier Diode for 1973-1978 1986-1989 Ford Bronco
A-Premium®Part # APALR068
Alternator Rectifier Diode for 1973-1978 1986-1989 Ford Bronco
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Bronco: 1973 1974 1975 1976 1977 1978 1986 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
GY-1026, D2OZ10304A, 131422, RF-09H, FR1270, D20Z10304A, GY1026A, D13
ConditionNew
item #1018SS9G
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Alternator Rectifier Diode for 1977-1987 Chevrolet P30
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1977-1987 Chevrolet P30
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet P30: 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521AC
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1982-1987 Chevrolet S10
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1982-1987 Chevrolet S10
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet S10: 1982 1983 1984 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523LS
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1987 Chevrolet R10
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1987 Chevrolet R10
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1987 Chevrolet R10
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521EC
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
Show less
Alternator Rectifier Diode for 1973-1979 Chevrolet Impala
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1973-1979 Chevrolet Impala
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101525P6
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
Show less
Alternator Rectifier Diode for 1975 1979 1987 Chevrolet G10
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1975 1979 1987 Chevrolet G10
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet G10: 1975 1979 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101522XL
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1974 1976-1977 1985-1987 Chevrolet Monte Carlo
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1974 1976-1977 1985-1987 Chevrolet Monte Carlo
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Monte Carlo: 1974 1976 1977 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101522ZW
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
Show less
Alternator Rectifier Diode with Trio for 1978-1981 Fiat Brava
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1978-1981 Fiat Brava
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Fiat Brava: 1978 1979 1980 1981
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523DW
Note
【Note-1】 14 Volt, 114mm OD, 6-35A Diodes, M6×52.5mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
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Page 16 of 69

Alternator Rectifier Bridges

An alternator rectifier bridge uses diodes to convert the alternator's alternating current into direct current for the vehicle's electrical system. It is one part of the alternator, rather than a complete replacement alternator.

A-Premium offers rectifier assemblies for selected alternators. Their size, connections and internal diode configuration can differ, so select a bridge for the specific alternator being repaired.

Choosing An Alternator Diode Bridge

Identify the alternator and compare the replacement's mounting shape, outside diameter and electrical connections. The vehicle application helps narrow the choices, but the rectifier must also match the alternator installed in the vehicle.

A charging warning or a weak battery does not identify a failed rectifier by itself. The battery, drive belt, wiring and voltage regulator are also part of the charging-system diagnosis.

Frequently Asked Questions (FAQ)

What is the difference between a rectifier and a voltage regulator?

The rectifier converts alternating current to direct current; the regulator controls alternator voltage for the operating conditions. They perform different jobs even when both are mounted on the alternator.

Can a faulty alternator diode drain the battery when parked?

A faulty diode can contribute to battery discharge while the vehicle is off. Other electrical loads and battery problems can also cause a drain, so the charging system needs a proper diagnosis.

Why does the battery-post size matter?

The post connects the charging output to the vehicle's electrical cable. Its diameter and length must suit the connection and available space; an M6 post and an M8 post are different mounting specifications.

What do the heat sinks on a rectifier do?

A heat sink helps transfer heat away from the electronic components. Some A-Premium bridge listings identify aluminum heat sinks, but the design and supplied parts vary by product.

Can I disconnect the battery while the engine runs to test charging?

Keep the battery connected while the alternator is operating. HELLA warns that disconnecting the battery or connections with the engine running can create voltage spikes and damage components; use the specified diagnostic procedure instead.

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