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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 for 1992-1993 Volkswagen TransporterAlternator Rectifier Diode with Trio for 1992-1993 Volkswagen Transporter
A-Premium®Part # APALR065
Alternator Rectifier Diode with Trio for 1992-1993 Volkswagen Transporter
52 Reviews
$37.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Transporter: 1992 1993
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184GY1
Note
12 Volt, 122mm OD, 8-50A Avalanche Diodes, M8×30mm Battery Post, with Trio.
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Alternator Rectifier Diode for 2000-2001 Nissan Xterra
A-Premium®Part # APALR063
Alternator Rectifier Diode for 2000-2001 Nissan Xterra
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Xterra: 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #101840Z9
Note
12 Volt, 114mm OD, 8-35 Ampere Diodes, M6×20.3mm Battery Post, M5×31.6mm Mounting Bolt
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Alternator Rectifier Diode with Trio for 2001-2003 Mercedes-Benz CLK55 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2001-2003 Mercedes-Benz CLK55 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 CLK55 AMG: 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Z60
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode with Trio for 1999-2001 Mercedes-Benz CLK430
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 1999-2001 Mercedes-Benz CLK430
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz CLK430: 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XYA
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
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Alternator Rectifier Diode for 2010 Dodge Ram 3500
A-Premium®Part # APALR076
Alternator Rectifier Diode for 2010 Dodge Ram 3500
52 Reviews
$43.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2010 Dodge Ram 3500
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018422P
Note
12 Volt, 128mm OD, 12-50 Avalanche Diodes, M8×59.5mm Battery Post.
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Alternator Rectifier Diode with Trio for 1986-1987 BMW L7
A-Premium®Part # APALR110
Alternator Rectifier Diode with Trio for 1986-1987 BMW L7
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW L7: 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018404T
Note
12 Volt, 120mm OD, 6-35 Ampere Press-fit, With Trio
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Alternator Rectifier Diode with Trio for 1986 BMW 325e
A-Premium®Part # APALR110
Alternator Rectifier Diode with Trio for 1986 BMW 325e
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 BMW 325e
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XD1
Note
12 Volt, 120mm OD, 6-35 Ampere Press-fit, With Trio
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Alternator Rectifier Diode with Trio & Copper Heat Sinks for 1987-1989 Mitsubishi Fuso FE
A-Premium®Part # APALR073
Alternator Rectifier Diode with Trio & Copper Heat Sinks for 1987-1989 Mitsubishi Fuso FE
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Fuso FE: 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10184PZ0
Note
【Note-1】 14 Volt, 85 mm OD, 6-35 Ampere Diodes, M5×43mm Battery Post.
【Note-2】 This item comes with Trio & Copper Heat Sinks.
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Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Golf
A-Premium®Part # APALR178
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Golf
52 Reviews
$26.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Golf: 1986 1987 1988 1989 1990 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018407L
Note
14 Volt, 114mm OD, 6-35A Avalanche Diodes, M8×52.5mm Battery Post, M5×43.7mm Trio Post, with Trio.
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Alternator Rectifier Diode with Trio for 1984-1985 Volkswagen Jetta
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984-1985 Volkswagen Jetta
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Jetta: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y8S
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 1984-1985 Audi 4000
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984-1985 Audi 4000
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi 4000: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XHG
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 for 1991 1997-2003 Ford Escort
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1991 1997-2003 Ford Escort
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Escort: 1991 1997 1998 1999 2000 2001 2002 2003
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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 #1018XE78
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Alternator Rectifier Diode for 1993-1999 2001-2002 Ford F-250
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1993-1999 2001-2002 Ford F-250
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-250: 1993 1994 1995 1996 1997 1998 1999 2001 2002
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 #1018XK05
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Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline Club Wagon
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline Club Wagon
52 Reviews
$32.99
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
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XHGV
Show less
Alternator Rectifier Diode for 2006-2008 Ford Explorer
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2006-2008 Ford Explorer
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Explorer: 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 #1018XL5E
Show less
Alternator Rectifier Diode for 2002 Ford E-550 Econoline Super Duty
A-Premium®Part # APALR117
Alternator Rectifier Diode for 2002 Ford E-550 Econoline Super Duty
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2002 Ford E-550 Econoline Super Duty
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Quantity1
Item LocatedUnited States
ConditionNew
item #1019689G
Note
12 Volt; 136mm OD; 8-35A General Diodes.
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Alternator Rectifier for 1990-1994 Plymouth Laser
A-Premium®Part # APALR025
Alternator Rectifier for 1990-1994 Plymouth Laser
52 Reviews
$36.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Plymouth Laser: 1990 1991 1992 1993 1994
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
A860T35270, E9PZ10304B, 135252, RM-41, IMR10040
ConditionNew
item #1013GQE8
Show less
Alternator Rectifier for 1990-1991 Dodge Ram 50
A-Premium®Part # APALR025
Alternator Rectifier for 1990-1991 Dodge Ram 50
52 Reviews
$36.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 50: 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
A860T35270, E9PZ10304B, 135252, RM-41, IMR10040
ConditionNew
item #1013GRE3
Show less
Alternator Rectifier for 1989-1990 Dodge Colt
A-Premium®Part # APALR025
Alternator Rectifier for 1989-1990 Dodge Colt
52 Reviews
$36.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Colt: 1989 1990
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
A860T35270, E9PZ10304B, 135252, RM-41, IMR10040
ConditionNew
item #1013GTA9
Show less
Alternator Rectifier for 2001-2005 Acura EL
A-Premium®Part # APALR030
Alternator Rectifier for 2001-2005 Acura EL
52 Reviews
$33.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Acura EL: 2001 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
A860X83370, 235297, IMR7579, RM-136
ConditionNew
item #1013GTZ8
Show less
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Page 60 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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