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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 1998-2001 Chrysler IntrepidAlternator Rectifier Diode for 1998-2001 Chrysler Intrepid
A-Premium®Part # APALR048
Alternator Rectifier Diode for 1998-2001 Chrysler Intrepid
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler Intrepid: 1998 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LADU
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 1987 Pontiac Tempest
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1987 Pontiac Tempest
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1987 Pontiac Tempest
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9L1
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 1982-1983 Pontiac J2000
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1983 Pontiac J2000
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCVW
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 1984 Pontiac J2000 Sunbird
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1984 Pontiac J2000 Sunbird
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1984 Pontiac J2000 Sunbird
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L90H
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 Mustang
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986 Ford Mustang
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Ford Mustang
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9AH
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 1986 Ford LTD
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986 Ford LTD
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Ford LTD
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA7V
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 for 2003-2004 Nissan Pathfinder
A-Premium®Part # APALR105
Alternator Rectifier Diode for 2003-2004 Nissan Pathfinder
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Pathfinder: 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCLL
Note
【Note-1】 This item is a 12 Volt, 8–35A avalanche diode with 100 mm mounting length and an M8×59.5 mm battery post.
【Note-2】 This item comes without trio/capacitor.
【Note-3】 For 2003-2004 Nissan Pathfinder, this item fits the model built before 12/03.
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Alternator Rectifier Diode with Trio for 1988-1990 Mercury Topaz
A-Premium®Part # APALR099
Alternator Rectifier Diode with Trio for 1988-1990 Mercury Topaz
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Topaz: 1988 1989 1990
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9RG
Note
【Note-1】 For Mercury Topaz & Ford Tempo, this item only fits the automatic transmission model, does not fit the manual transmission model.
【Note-2】 For Mercury Topaz & Ford Tempo, this item only fits the Alternator Unit with Pulley, 75 Amp.
【Note-3】 This item is a 12 Volt, 6-35A block/ampere diode with trio.
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Alternator Rectifier Diode With Trio for 1986-1989 Mitsubishi Starion
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1986-1989 Mitsubishi Starion
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Starion: 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LEDC
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 1987-1996 Mitsubishi Mighty Max
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1987-1996 Mitsubishi Mighty Max
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Mighty Max: 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LHR6
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 1993-1995 Land Rover Range Rover
A-Premium®Part # APALR054
Alternator Rectifier Diode With Trio for 1993-1995 Land Rover Range Rover
52 Reviews
$26.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Land Rover Range Rover: 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L99C
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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Alternator Rectifier Diode with Heat Sinks for 2006-2008 Mercedes-Benz SLK280
A-Premium®Part # APALR086
Alternator Rectifier Diode with Heat Sinks for 2006-2008 Mercedes-Benz SLK280
52 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz SLK280: 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7LU
Note
This item is a 12 Volt, 6-50A press-fit/avalanche diode with 129 mm OD, an M8×35 mm battery post (L) and an M8×22 mm battery post (R).
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Alternator Rectifier Diode for 1983-1986 Chevrolet C50
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1983-1986 Chevrolet C50
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C50: 1983 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LKEC
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Alternator Rectifier Diode for 1983-1987 Chevrolet Caprice
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1983-1987 Chevrolet Caprice
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Caprice: 1983 1984 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGSZ
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Alternator Rectifier Diode for 1982-1987 Pontiac Bonneville
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1987 Pontiac Bonneville
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCNC
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.
Show less
Alternator Rectifier Diode for 1983-1987 Buick Century
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1987 Buick Century
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Century: 1983 1984 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L85Q
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.
Show less
Alternator Rectifier Diode for 1987 Pontiac Safari
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1987 Pontiac Safari
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1987 Pontiac Safari
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L88V
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.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 1989-1991 Oldsmobile Cutlass Cruiser
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1989-1991 Oldsmobile Cutlass Cruiser
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Cruiser: 1989 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPR9
Note
【Note-1】 This item is a 12 Volt, 6-35A press-fit/avalanche diode with 100.3 mm OD.
【Note-2】 This item comes with aluminum heat sinks.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1997 Chevrolet Express 3500
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1997 Chevrolet Express 3500
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1997 Chevrolet Express 3500
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRVD
Note
【Note-1】 This item is a 12 Volt, 6-35A press-fit/avalanche diode with 100.3 mm OD.
【Note-2】 This item comes with aluminum heat sinks.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1991 Oldsmobile Cutlass Calais
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1991 Oldsmobile Cutlass Calais
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1991 Oldsmobile Cutlass Calais
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HN35
Note
【Note-1】 This item is a 12 Volt, 6-35A press-fit/avalanche diode with 100.3 mm OD.
【Note-2】 This item comes with aluminum heat sinks.
Show less
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Page 54 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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