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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 for 1991-1993 Cadillac Commercial ChassisAlternator Rectifier Diode for 1991-1993 Cadillac Commercial Chassis
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1991-1993 Cadillac Commercial Chassis
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Commercial Chassis: 1991 1992 1993
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523CW
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
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Alternator Rectifier Diode with Trio Capacitor for 1995-1998 Hyundai Sonata
A-Premium®Part # APALR023
Alternator Rectifier Diode with Trio Capacitor for 1995-1998 Hyundai Sonata
52 Reviews
$58.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Sonata: 1995 1996 1997 1998
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Quantity1
Item LocatedUnited States
ConditionNew
item #101524UN
Note
【Note-1】 14 Volt, 120.5mm OD, 8-35A Diodes, M6×49.5mm Battery Post.
【Note-2】 This item comes with Trio/Capacitor.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2009 Cadillac SRX
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2009 Cadillac SRX
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac SRX: 2004 2005 2006 2007 2008 2009
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015234D
Note
【Note-1】 12 Volt, 117mm OD, 12-35A Avalanche Diodes, M6×34.5mm Battery Post.;
【Note-2】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode for 2002-2007 Ford F-350 Super Duty
A-Premium®Part # APALR117
Alternator Rectifier Diode for 2002-2007 Ford F-350 Super Duty
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-350 Super Duty: 2002 2003 2004 2005 2006 2007
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Quantity1
Item LocatedUnited States
ConditionNew
item #101963U5
Note
12 Volt; 136mm OD; 8-35A General Diodes.
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Alternator Rectifier Diode for 1999-2001 Ford F-250 Super Duty
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1999-2001 Ford F-250 Super Duty
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-250 Super Duty: 1999 2000 2001
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Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XEUH
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Alternator Rectifier Diode for 2004-2007 Ford E-350 Super Duty
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2004-2007 Ford E-350 Super Duty
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-350 Super Duty: 2004 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XDLS
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Alternator Rectifier Diode for 1983-1987 Honda Civic
A-Premium®Part # APALR095
Alternator Rectifier Diode for 1983-1987 Honda Civic
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Civic: 1983 1984 1985 1986 1987
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Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XLQA
Note
【Note-1】12 Volt; 114mm OD; 6-35 Ampere Diodes.
【Note-2】This item comes With M6×48.5mm Battery Post & M5×35mm Ground Post.
【Note-3】This item comes With M5×41.5mm Mounting Bolt.
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Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2016 Ford F-350
A-Premium®Part # APALR162
Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2016 Ford F-350
52 Reviews
$50.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-350: 2011 2012 2013 2014 2015 2016
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SQCG
Note
This item comes With Aluminium Heat Sinks.
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Alternator Rectifier Diode with Copper Heat Sinks for 2002-2004 Honda Odyssey
A-Premium®Part # APALR056
Alternator Rectifier Diode with Copper Heat Sinks for 2002-2004 Honda Odyssey
52 Reviews
$50.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Odyssey: 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SQU9
Note
This item comes With Copper Heat Sinks.
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Alternator Rectifier Diode for 2003-2005 Ford E-350 Club Wagon
A-Premium®Part # APALR092
Alternator Rectifier Diode for 2003-2005 Ford E-350 Club Wagon
52 Reviews
$33.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-350 Club Wagon: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SN3T
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Alternator Rectifier Diode for 2011-2018 Ram 5500
A-Premium®Part # APALR076
Alternator Rectifier Diode for 2011-2018 Ram 5500
52 Reviews
$43.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ram 5500: 2011 2012 2013 2014 2015 2016 2017 2018
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZXY
Note
12 Volt, 128mm OD, 12-50 Avalanche Diodes, M8×59.5mm Battery Post.
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Alternator Rectifier Diode for 2011-2018 Ram 4500
A-Premium®Part # APALR076
Alternator Rectifier Diode for 2011-2018 Ram 4500
52 Reviews
$43.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ram 4500: 2011 2012 2013 2014 2015 2016 2017 2018
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018412S
Note
12 Volt, 128mm OD, 12-50 Avalanche Diodes, M8×59.5mm Battery Post.
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Alternator Rectifier Diode with Trio for 1993-1998 Volkswagen Golf
A-Premium®Part # APALR065
Alternator Rectifier Diode with Trio for 1993-1998 Volkswagen Golf
52 Reviews
$37.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Golf: 1993 1994 1995 1996 1997 1998
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184NLP
Note
12 Volt, 122mm OD, 8-50A Avalanche Diodes, M8×30mm Battery Post, with Trio.
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Alternator Rectifier Diode with Trio for 1992-1995 1997 2000-2001 Volkswagen EuroVan
A-Premium®Part # APALR065
Alternator Rectifier Diode with Trio for 1992-1995 1997 2000-2001 Volkswagen EuroVan
52 Reviews
$37.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen EuroVan: 1992 1993 1994 1995 1997 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184NQ0
Note
12 Volt, 122mm OD, 8-50A Avalanche Diodes, M8×30mm Battery Post, with Trio.
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Alternator Rectifier Diode for 1990-1991 Mazda 626
A-Premium®Part # APALR100
Alternator Rectifier Diode for 1990-1991 Mazda 626
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda 626: 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183WW3
Note
【Note-1】 14 Volt, 8-35A Diodes, M8×54mm Battery Post, With Trio.
【Note-2】 This item fits the model with Automatic Transmission, not Manual Transmission.
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Alternator Rectifier Diode with Trio for 2001-2002 Mercedes-Benz S55 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2001-2002 Mercedes-Benz S55 AMG
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz S55 AMG: 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184241
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 Dodge Mini Ram
A-Premium®Part # APALR129
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 Dodge Mini Ram
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Dodge Mini Ram
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184KVK
Note
【Note-1】 12 Volt, 94mm OD, 6-35 Ampere Diodes.
【Note-2】 This item comes with Trio & Aluminum Heat Sinks.
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Alternator Rectifier Diode with Trio for 1986 BMW 735i
A-Premium®Part # APALR110
Alternator Rectifier Diode with Trio for 1986 BMW 735i
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 BMW 735i
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018409K
Note
12 Volt, 120mm OD, 6-35 Ampere Press-fit, With Trio
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Alternator Rectifier Diode with Trio for 1984 Audi 4000 Quattro
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984 Audi 4000 Quattro
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1984 Audi 4000 Quattro
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841X0
Note
【Note-1】 12 Volt, 8-35 Ampere Diodes, M8×52mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode with Trio for 1984 Volkswagen Rabbit Convertible
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984 Volkswagen Rabbit Convertible
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1984 Volkswagen Rabbit Convertible
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841Z1
Note
【Note-1】 12 Volt, 8-35 Ampere Diodes, M8×52mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
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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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