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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 1990-1993 Dodge W250Alternator Rectifier Diode for 1990-1993 Dodge W250
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1990-1993 Dodge W250
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VRHK
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2008 Toyota Solara
A-Premium®Part # APALR011
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2008 Toyota Solara
52 Reviews
$34.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Solara: 2004 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101524DE
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×33mm Battery Post.;
【Note-2】 This item comes With Aluminum Heat sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2005-2007 Chevrolet Cobalt
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2005-2007 Chevrolet Cobalt
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Cobalt: 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8PK
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1989-1992 Geo Prizm
A-Premium®Part # APALR003
Alternator Rectifier Diode for 1989-1992 Geo Prizm
52 Reviews
$55.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Geo Prizm: 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015266Q
Note
12 Volt, 100mm OD, 8-50A Avalanche Diodes.
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Alternator Rectifier Diode for 1995-2000 Dodge Ram 4000
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1995-2000 Dodge Ram 4000
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 4000: 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VL32
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2010-2016 Scion tC
A-Premium®Part # APALR011
Alternator Rectifier Diode with Aluminum Heat Sinks for 2010-2016 Scion tC
52 Reviews
$34.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Scion tC: 2010 2011 2012 2013 2014 2015 2016
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101523RT
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×33mm Battery Post.;
【Note-2】 This item comes With Aluminum Heat sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2005-2008 Land Rover LR3
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2005-2008 Land Rover LR3
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Land Rover LR3: 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L901
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1986-1992 Toyota Corolla
A-Premium®Part # APALR003
Alternator Rectifier Diode for 1986-1992 Toyota Corolla
52 Reviews
$55.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Corolla: 1986 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101525PS
Note
12 Volt, 100mm OD, 8-50A Avalanche Diodes.
Show less
Alternator Rectifier Diode for 1990-1993 Dodge W350
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1990-1993 Dodge W350
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VQSK
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2013 Toyota Highlander
A-Premium®Part # APALR011
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2013 Toyota Highlander
52 Reviews
$34.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Highlander: 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101522NP
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×33mm Battery Post.;
【Note-2】 This item comes With Aluminum Heat sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009 Land Rover Range Rover
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2009 Land Rover Range Rover
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2009 Land Rover Range Rover
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8NQ
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1983-1991 Toyota Camry
A-Premium®Part # APALR003
Alternator Rectifier Diode for 1983-1991 Toyota Camry
52 Reviews
$55.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Camry: 1983 1984 1985 1986 1987 1988 1989 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015239R
Note
12 Volt, 100mm OD, 8-50A Avalanche Diodes.
Show less
Alternator Rectifier Diode for 1990-1993 Dodge W150
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1990-1993 Dodge W150
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VR5N
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2010-2013 Toyota 4Runner
A-Premium®Part # APALR011
Alternator Rectifier Diode with Aluminum Heat Sinks for 2010-2013 Toyota 4Runner
52 Reviews
$34.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota 4Runner: 2010 2011 2012 2013
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10152653
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×33mm Battery Post.;
【Note-2】 This item comes With Aluminum Heat sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2007 Saturn Ion
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2007 Saturn Ion
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn Ion: 2004 2005 2006 2007
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC5N
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1993-1998 Toyota T100
A-Premium®Part # APALR003
Alternator Rectifier Diode for 1993-1998 Toyota T100
52 Reviews
$55.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota T100: 1993 1994 1995 1996 1997 1998
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521TX
Note
12 Volt, 100mm OD, 8-50A Avalanche Diodes.
Show less
Alternator Rectifier Diode for 1990-1993 Dodge D250
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1990-1993 Dodge D250
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VRH4
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2006 Lexus RX330
A-Premium®Part # APALR011
Alternator Rectifier Diode with Aluminum Heat Sinks for 2004-2006 Lexus RX330
52 Reviews
$34.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Lexus RX330: 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101521YT
Note
【Note-1】 12 Volt, 117mm OD, 6-50A Avalanche Diodes, M6×33mm Battery Post.;
【Note-2】 This item comes With Aluminum Heat sinks.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2001-2006 Dodge Durango
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2001-2006 Dodge Durango
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Durango: 2001 2002 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7XP
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
Show less
Alternator Rectifier Diode for 1984-1989 Honda Accord
A-Premium®Part # APALR003
Alternator Rectifier Diode for 1984-1989 Honda Accord
52 Reviews
$55.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Accord: 1984 1985 1986 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101524RX
Note
12 Volt, 100mm OD, 8-50A Avalanche Diodes.
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.

Related Categories

Alternator Voltage Regulator
Alternator Voltage Regulator
Alternator
Alternator
Fuel Pump
Fuel Pump
Water Pump
Water Pump