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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 Capacitor for 1990-1991 Mitsubishi Fuso FGAlternator Rectifier Diode with Trio Capacitor for 1990-1991 Mitsubishi Fuso FG
A-Premium®Part # APALR023
Alternator Rectifier Diode with Trio Capacitor for 1990-1991 Mitsubishi Fuso FG
52 Reviews
$58.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Fuso FG: 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015240G
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 for 2002-2004 INFINITI I35
A-Premium®Part # APALR014
Alternator Rectifier Diode for 2002-2004 INFINITI I35
52 Reviews
$41.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits INFINITI I35: 2002 2003 2004
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Quantity1
Item LocatedUnited States
ConditionNew
item #101522PX
Note
【Note-1】 12 Volt, 119mm OD, 8-35A Avalanche Diodes, M6×20.3mm Battery Post.;
【Note-2】 This item comes with M5×31.6mm Mounting Bolt.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2005 Pontiac Bonneville
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2005 Pontiac Bonneville
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Bonneville: 2004 2005
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523ZG
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 with Aluminum Heat Sinks for 2009-2014 Acura TSX
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009-2014 Acura TSX
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura TSX: 2009 2010 2011 2012 2013 2014
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523ZH
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 2002-2006 Nissan Altima
A-Premium®Part # APALR028
Alternator Rectifier Diode for 2002-2006 Nissan Altima
52 Reviews
$43.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Altima: 2002 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101526EP
Note
【Note-1】 24 Volt, 119mm OD, 8-50A Avalanche Diodes, M6×20.3mm Battery Post.
【Note-2】 This item comes with M5×31.6mm Mounting Bolt.
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Alternator Rectifier Diode for 2003-2005 Subaru Forester
A-Premium®Part # APALR015
Alternator Rectifier Diode for 2003-2005 Subaru Forester
52 Reviews
$57.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Subaru Forester: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101526AC
Note
【Note-1】 14 Volt, 8-35A Diodes, M5×44mm Battery Post.
【Note-2】 This item comes without Capacitor and Trio.
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Alternator Rectifier Diode for 1993-1997 Cadillac Eldorado
A-Premium®Part # APALR045
Alternator Rectifier Diode for 1993-1997 Cadillac Eldorado
52 Reviews
$38.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Eldorado: 1993 1994 1995 1996 1997
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Quantity1
Item LocatedUnited States
ConditionNew
item #10152640
Note
【Note-1】 12 Volt, 117.8mm OD, 6-50A Jumbo Avalanche Button, with Recessed Mounting Hole.
【Note-2】 For Cadillac DeVille 1997, fits the model with VIN 9.
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Alternator Rectifier Diode for 2001-2005 Mercedes-Benz CLK320
A-Premium®Part # APALR024
Alternator Rectifier Diode for 2001-2005 Mercedes-Benz CLK320
52 Reviews
$51.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz CLK320: 2001 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015241Q
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, M8×22mm Battery Post(L), M8×32mm Battery Post(R).
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Alternator Rectifier Diode for 2007-2010 GMC Yukon
A-Premium®Part # APALR093
Alternator Rectifier Diode for 2007-2010 GMC Yukon
52 Reviews
$46.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Yukon: 2007 2008 2009 2010
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Quantity1
Item LocatedUnited States
Part interchange
10503581, 10510904, DR3580, RD-40HA, RD40HA
ConditionNew
item #1018SR3Z
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Alternator Rectifier Diode with Copper Heat Sinks for 2006-2009 Land Rover Range Rover Sport
A-Premium®Part # APALR158
Alternator Rectifier Diode with Copper Heat Sinks for 2006-2009 Land Rover Range Rover Sport
52 Reviews
$41.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Land Rover Range Rover Sport: 2006 2007 2008 2009
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018SSW7
Note
This item comes With Copper Heat Sinks.
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Alternator Rectifier Diode for 1997-2003 BMW 540i
A-Premium®Part # APALR018
Alternator Rectifier Diode for 1997-2003 BMW 540i
52 Reviews
$46.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 540i: 1997 1998 1999 2000 2001 2002 2003
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018SN9N
Note
This item does not come with Trio.
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Alternator Rectifier Diode for 1997-2002 Ford Expedition
A-Premium®Part # APALR092
Alternator Rectifier Diode for 1997-2002 Ford Expedition
52 Reviews
$33.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Expedition: 1997 1998 1999 2000 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SP79
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Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline Club Wagon
A-Premium®Part # APALR092
Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline 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-150 Econoline Club Wagon: 1992 1993 1994 1995 1996
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SPSX
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Alternator Rectifier Diode with Trio & Capacitor for 2003 Mitsubishi Outlander
A-Premium®Part # APALR152
Alternator Rectifier Diode with Trio & Capacitor for 2003 Mitsubishi Outlander
52 Reviews
$27.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Mitsubishi Outlander
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SNTH
Note
This item comes With Trio & With Capacitor.
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Alternator Rectifier Diode with Trio & Capacitor for 2010-2012 Subaru Outback
A-Premium®Part # APALR152
Alternator Rectifier Diode with Trio & Capacitor for 2010-2012 Subaru Outback
52 Reviews
$27.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Subaru Outback: 2010 2011 2012
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SN8C
Note
This item comes With Trio & With Capacitor.
Show less
Alternator Rectifier Diode for 2001-2002 Lincoln Town Car
A-Premium®Part # APALR089
Alternator Rectifier Diode for 2001-2002 Lincoln Town Car
52 Reviews
$42.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Lincoln Town Car: 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
139668, F5OZ-10300FA, F5OZ10300FA, FR3003, RF-063, RF063
ConditionNew
item #1018SQS6
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Alternator Rectifier Diode for 2002-2005 Mercury Mountaineer
A-Premium®Part # APALR089
Alternator Rectifier Diode for 2002-2005 Mercury Mountaineer
52 Reviews
$42.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
139668, F5OZ-10300FA, F5OZ10300FA, FR3003, RF-063, RF063
ConditionNew
item #1018SQH0
Show less
Alternator Rectifier Diode for 2003 Ford Econoline
A-Premium®Part # APALR091
Alternator Rectifier Diode for 2003 Ford Econoline
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Ford Econoline
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 #1018XEXE
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Alternator Rectifier Diode for 2007-2008 Ford Explorer Sport Trac
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2007-2008 Ford Explorer Sport Trac
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Explorer Sport Trac: 2007 2008
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 #1018XK7Q
Show less
Alternator Rectifier Diode for 1987-1992 Plymouth Colt
A-Premium®Part # APALR144
Alternator Rectifier Diode for 1987-1992 Plymouth Colt
52 Reviews
$26.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Plymouth Colt: 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XVD
Note
【Note-1】 12 Volt, 96.7mm OD, 6-35A Diodes, M5×49mm Battery Post, with Trio.
【Note-2】 For Mitsubishi Mirage, this item fits the model to 4/1988.
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Page 45 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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