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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 Aluminum Heat Sink for 1975-1980 Dodge B200Alternator Rectifier Diode with Aluminum Heat Sink for 1975-1980 Dodge B200
A-Premium®Part # APALR150
Alternator Rectifier Diode with Aluminum Heat Sink for 1975-1980 Dodge B200
52 Reviews
$14.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge B200: 1975 1976 1977 1978 1979 1980
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184TKV
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 Trio for 1978-1981 BMW 633CSi
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1978-1981 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: 1978 1979 1980 1981
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015231D
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 Trio for 1975-1978 BMW 530i
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1975-1978 BMW 530i
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 530i: 1975 1976 1977 1978
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Quantity1
Item LocatedUnited States
ConditionNew
item #10152492
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 1997-1999 Toyota Tacoma
A-Premium®Part # APALR008
Alternator Rectifier Diode with Aluminum Heat Sinks 8-50A for 1997-1999 Toyota Tacoma
52 Reviews
$58.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Tacoma: 1997 1998 1999
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523RR
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 1978-1980 1982 1984-1986 Chevrolet K30
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1978-1980 1982 1984-1986 Chevrolet K30
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet K30: 1978 1979 1980 1982 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #10152199
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1978-1987 1989-1990 Chevrolet G30
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1978-1987 1989-1990 Chevrolet G30
52 Reviews
$26.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet G30: 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1989 1990
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015259A
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1987 Chevrolet R10 Suburban
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1987 Chevrolet R10 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 R10 Suburban
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015248X
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
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Alternator Rectifier Diode for 1987 Chevrolet V20 Suburban
A-Premium®Part # APALR041
Alternator Rectifier Diode for 1987 Chevrolet V20 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 V20 Suburban
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101526C5
Note
12 Volt, 80mm OD, 6-25 Ampere Button.
Show less
Alternator Rectifier Diode with Trio for 1980-1981 Volvo 264
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1980-1981 Volvo 264
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volvo 264: 1980 1981
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101524L9
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 Trio for 1974-1975 Opel 1900
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1974-1975 Opel 1900
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Opel 1900: 1974 1975
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101525W0
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 Trio for 1978 Fiat 131
A-Premium®Part # APALR033
Alternator Rectifier Diode with Trio for 1978 Fiat 131
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1978 Fiat 131
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015217H
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 2007-2011 Hyundai Azera
A-Premium®Part # APALR005
Alternator Rectifier Diode for 2007-2011 Hyundai Azera
52 Reviews
$28.99
Low stock: Only 4 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 #101880A5
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
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Alternator Rectifier Diode for 1986-1987 Ford Escort
A-Premium®Part # APALR068
Alternator Rectifier Diode for 1986-1987 Ford Escort
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Escort: 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
GY-1026, D2OZ10304A, 131422, RF-09H, FR1270, D20Z10304A, GY1026A, D13
ConditionNew
item #1018SRA8
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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
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184T6E
Note
【Note-1】 12 Volt, 3-35A Diodes.
【Note-2】 This item comes with Aluminum Heat Sink.
Show less
Alternator Rectifier Diode for 1996-2004 Acura TL
A-Premium®Part # APALR143
Alternator Rectifier Diode for 1996-2004 Acura TL
52 Reviews
$27.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura TL: 1996 1997 1998 1999 2000 2001 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9D7
Note
This item is a 12 Volt, 8-50A press-fit diode with 113 mm OD and an M6 battery post (36°).
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Alternator Rectifier Diode for 2005-2007 BMW 325i
A-Premium®Part # APALR164
Alternator Rectifier Diode for 2005-2007 BMW 325i
52 Reviews
$40.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 325i: 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7V7
Note
This item is a 12 Volt, 6-50A press-fit/avalanche diode with 114 mm OD and an M8×32 mm battery post.
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Alternator Rectifier Diode for 1986-1992 Volkswagen Jetta
A-Premium®Part # APALR170
Alternator Rectifier Diode for 1986-1992 Volkswagen Jetta
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Jetta: 1986 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC3E
Note
This item is a 12 Volt, 6–35A diode with 114 mm OD, an M8×52.5 mm battery post, an M5×43.7 mm trio post, and trio.
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Alternator Rectifier Diode with Negative Heat Sinks for 2005-2006 Cadillac Escalade ESV
A-Premium®Part # APALR155
Alternator Rectifier Diode with Negative Heat Sinks for 2005-2006 Cadillac Escalade ESV
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade ESV: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQGL
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M6×51 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
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Page 15 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.

Related Categories

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Alternator Voltage Regulator
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