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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 Aluminium Heat Sinks for 2008-2012 Toyota SequoiaAlternator Rectifier Diode with Aluminium Heat Sinks for 2008-2012 Toyota Sequoia
A-Premium®Part # APALR162
Alternator Rectifier Diode with Aluminium Heat Sinks for 2008-2012 Toyota Sequoia
52 Reviews
$50.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Sequoia: 2008 2009 2010 2011 2012
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018ST9G
Note
This item comes With Aluminium Heat Sinks.
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Alternator Rectifier Diode for 2007-2010 Chevrolet Avalanche
A-Premium®Part # APALR093
Alternator Rectifier Diode for 2007-2010 Chevrolet Avalanche
52 Reviews
$46.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Avalanche: 2007 2008 2009 2010
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Quantity1
Item LocatedUnited States
Part interchange
10503581, 10510904, DR3580, RD-40HA, RD40HA
ConditionNew
item #1018SRHC
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Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2014 Ford F-150
A-Premium®Part # APALR162
Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2014 Ford F-150
52 Reviews
$50.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-150: 2011 2012 2013 2014
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SR3G
Note
This item comes With Aluminium Heat Sinks.
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Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2016 Ford F-450 Super Duty
A-Premium®Part # APALR162
Alternator Rectifier Diode with Aluminium Heat Sinks for 2011-2016 Ford F-450 Super Duty
52 Reviews
$50.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-450 Super Duty: 2011 2012 2013 2014 2015 2016
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SN3X
Note
This item comes With Aluminium Heat Sinks.
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Alternator Rectifier Diode for 1995-2001 BMW 750iL
A-Premium®Part # APALR018
Alternator Rectifier Diode for 1995-2001 BMW 750iL
52 Reviews
$46.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 750iL: 1995 1996 1997 1998 1999 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018SRD1
Note
This item does not come with Trio.
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Alternator Rectifier Diode for 1990-1999 Ford Taurus
A-Premium®Part # APALR092
Alternator Rectifier Diode for 1990-1999 Ford Taurus
52 Reviews
$33.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Taurus: 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SR1E
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Alternator Rectifier Diode for 2007-2008 Ford Explorer Sport Trac
A-Premium®Part # APALR092
Alternator Rectifier Diode for 2007-2008 Ford Explorer Sport Trac
52 Reviews
$33.99
Low stock: Only 4 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
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SR9Y
Show less
Alternator Rectifier Diode for 1991-2000 Ford Explorer
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1991-2000 Ford Explorer
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Explorer: 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
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 #1018XGLZ
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Alternator Rectifier Diode for 2003 Ford E-550 Super Duty
A-Premium®Part # APALR091
Alternator Rectifier Diode for 2003 Ford E-550 Super Duty
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Ford E-550 Super Duty
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 #1018XLPN
Show less
Alternator Rectifier Diode for 2004-2008 Ford E-150
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2004-2008 Ford E-150
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-150: 2004 2005 2006 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 #1018XGW4
Show less
Alternator Rectifier Diode for 2004-2008 Ford E-250
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2004-2008 Ford E-250
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-250: 2004 2005 2006 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 #1018XKWK
Show less
Alternator Rectifier Diode for 2004-2008 Ford F-150
A-Premium®Part # APALR117
Alternator Rectifier Diode for 2004-2008 Ford F-150
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-150: 2004 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101966A5
Note
12 Volt; 136mm OD; 8-35A General Diodes.
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Alternator Rectifier Diode for 1999-2001 Chrysler LHS
A-Premium®Part # APALR048
Alternator Rectifier Diode for 1999-2001 Chrysler LHS
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler LHS: 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8A8
Note
【Note-1】 This item is a 12 Volt, 8-35A General diode with 100 mm OD and an M6×44.5 mm battery post.
【Note-2】 This item comes without trio and capacitor.
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Alternator Rectifier Diode for 1986-1987 Buick Somerset
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1986-1987 Buick Somerset
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Somerset: 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8S2
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Alternator Rectifier Diode for 1983-1985 1987-1989 Cadillac DeVille
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1985 1987-1989 Cadillac DeVille
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac DeVille: 1983 1984 1985 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9N2
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Alternator Rectifier Diode with Heat Sinks for 1986 Ford Tempo
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986 Ford Tempo
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Ford Tempo
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7RK
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
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Alternator Rectifier Diode with Heat Sinks for 1987-1989 Ford Aerostar
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1987-1989 Ford Aerostar
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Aerostar: 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L75L
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
Show less
Alternator Rectifier Diode with Heat Sinks for 1987-1989 Ford E-150 Econoline
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1987-1989 Ford E-150 Econoline
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-150 Econoline: 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA7L
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
Show less
Alternator Rectifier Diode With Trio for 1985-1987 Mitsubishi Galant
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1985-1987 Mitsubishi Galant
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Galant: 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LH95
Note
This item is a 12 Volt, 6–35A block/ampere diode with 75 mm mounting length.
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Alternator Rectifier Diode With Trio for 1994-1995 Land Rover Defender 90
A-Premium®Part # APALR054
Alternator Rectifier Diode With Trio for 1994-1995 Land Rover Defender 90
52 Reviews
$26.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Land Rover Defender 90: 1994 1995
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8LC
Note
This item is a 14 Volt, 8–35A press-fit/ampere diode with 104 mm OD, an M6×41 mm battery post (L), and an M4×17 mm battery post (R).
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Page 42 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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