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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 1986-1988 Volkswagen QuantumAlternator Rectifier Diode with Trio for 1986-1988 Volkswagen Quantum
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1986-1988 Volkswagen Quantum
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Quantum: 1986 1987 1988
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y9H
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1982-1984 BMW 633CSi
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1982-1984 BMW 633CSi
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 633CSi: 1982 1983 1984
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018423Z
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1990 1992 Jaguar Vanden Plas
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1990 1992 Jaguar Vanden Plas
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jaguar Vanden Plas: 1990 1992
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Quantity1
Item LocatedUnited States
ConditionNew
item #101841S4
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1986-1993 Volkswagen Cabriolet
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1986-1993 Volkswagen Cabriolet
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Cabriolet: 1986 1987 1988 1989 1990 1991 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #101840A8
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1984-1985 BMW 318i
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 BMW 318i
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 318i: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183X02
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode for 2004-2008 Hyundai Tiburon
A-Premium®Part # APALR107
Alternator Rectifier Diode for 2004-2008 Hyundai Tiburon
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Tiburon: 2004 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7ZK
Note
This item is a 14 Volt, 3–50A avalanche diode with 107 mm OD and an M8×40 mm battery post, without trio.
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Alternator Rectifier Diode for 1963-1971 Chevrolet C20 Pickup
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1971 Chevrolet C20 Pickup
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C20 Pickup: 1963 1964 1965 1966 1967 1968 1969 1970 1971
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LEC5
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode for 1963-1970 Cadillac Eldorado
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1970 Cadillac Eldorado
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Eldorado: 1963 1964 1965 1966 1967 1968 1969 1970
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LDP5
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode with Trio for 1989 Audi 200 Quattro
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1989 Audi 200 Quattro
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1989 Audi 200 Quattro
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZUT
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1988 Audi 90
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1988 Audi 90
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1988 Audi 90
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XC8
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1984-1985 Chrysler Daytona
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Chrysler Daytona
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler Daytona: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183X0P
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1984-1985 Dodge Aries
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Dodge Aries
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Aries: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841D7
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1985-1992 Volkswagen Golf
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1985-1992 Volkswagen Golf
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Golf: 1985 1986 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101840VL
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1986 Audi Quattro
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1986 Audi Quattro
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Audi Quattro
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841TZ
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
12V Rectifier 8-35A Avalanche Diodes for 2001-2005 Subaru Outback
A-Premium®Part # APALR029
12V Rectifier 8-35A Avalanche Diodes for 2001-2005 Subaru Outback
52 Reviews
$49.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Subaru Outback: 2001 2002 2003 2004 2005
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Quantity1
Item LocatedUnited States
ConditionNew
item #1013GR0K
Note
【Note-1】 12 Volt, 122mm OD, 8-35A Avalanche Diodes, M5×44mm Battery Post.
【Note-2】 This item comes Without Trio.
【Note-3】 This item comes Without Capacitor.
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Alternator Rectifier Diode with Trio for 1985-1986 BMW 524td
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1985-1986 BMW 524td
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 524td: 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #101524TL
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 1996-2001 Suzuki Esteem
A-Premium®Part # APALR008
Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 1996-2001 Suzuki Esteem
52 Reviews
$58.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Suzuki Esteem: 1996 1997 1998 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521VG
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 with Aluminum Heat Sinks 8-50A for 1996-1997 Isuzu Trooper
A-Premium®Part # APALR008
Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 1996-1997 Isuzu Trooper
52 Reviews
$58.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu Trooper: 1996 1997
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521A4
Note
【Note-1】 14 Volt, 117mm OD, 8-50 A Diodes, M6 Battery Post (31°).
【Note-2】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1973-1974 Chevrolet C10 Pickup
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1973-1974 Chevrolet C10 Pickup
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 #101523QU
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1975-1986 Chevrolet K20
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1975-1986 Chevrolet K20
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet K20: 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521VW
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
Show less
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Page 12 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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