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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 1989 GMC R2500Alternator Rectifier Diode for 1989 GMC R2500
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1989 GMC R2500
52 Reviews
$31.99
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2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQ0U
Note
This item is a 12 Volt, 3-50A press-fit/avalanche diode with 102 mm OD.
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Alternator Rectifier Diode for 1990-1996 GMC C6000 Topkick
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1990-1996 GMC C6000 Topkick
52 Reviews
$31.99
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2-year warranty
90 days free return
Fits GMC C6000 Topkick: 1990 1991 1992 1993 1994 1995 1996
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRYQ
Note
This item is a 12 Volt, 3-50A press-fit/avalanche diode with 102 mm OD.
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Alternator Rectifier Diode with Trio for 1985-1986 Dodge Colt
A-Premium®Part # APALR096
Alternator Rectifier Diode with Trio for 1985-1986 Dodge Colt
52 Reviews
$28.99
Low stock: Only 4 left
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2-year warranty
90 days free return
Fits Dodge Colt: 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LHLC
Note
【Note-1】 This item is a 12 Volt, 6-35A block/ampere diode with trio.
【Note-2】 For Dodge & Plymouth Colt L4 1.6L, this item only fits the vehicle built before 5/1986.
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Alternator Rectifier Diode for 1998-2002 Saturn SC1
A-Premium®Part # APALR058
Alternator Rectifier Diode for 1998-2002 Saturn SC1
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn SC1: 1998 1999 2000 2001 2002
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQED
Note
This item is a 12 Volt, 6-50A avalanche diode with 100 mm OD.
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Alternator Rectifier Diode for 1998-2002 Saturn SL
A-Premium®Part # APALR058
Alternator Rectifier Diode for 1998-2002 Saturn SL
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn SL: 1998 1999 2000 2001 2002
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HNR2
Note
This item is a 12 Volt, 6-50A avalanche diode with 100 mm OD.
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Alternator Rectifier Diode for 1998-2002 Saturn SL2
A-Premium®Part # APALR058
Alternator Rectifier Diode for 1998-2002 Saturn SL2
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn SL2: 1998 1999 2000 2001 2002
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPUQ
Note
This item is a 12 Volt, 6-50A avalanche diode with 100 mm OD.
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Alternator Rectifier Diode for 2004-2008 Chevrolet Aveo
A-Premium®Part # APALR142
Alternator Rectifier Diode for 2004-2008 Chevrolet Aveo
52 Reviews
$27.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Aveo: 2004 2005 2006 2007 2008
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC72
Note
【Note-1】 This item is a 14 Volt, 6–50A avalanche diode with 114.1 mm OD and an M8×47.5 mm battery post, without trio.
【Note-2】 This item fits the model with 3 pin voltage regulator.
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Alternator Rectifier Diode for 1983 Jeep Scrambler
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983 Jeep Scrambler
52 Reviews
$19.99
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2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8H0
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 Commercial Chassis
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1985 1987-1989 Cadillac Commercial Chassis
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Commercial Chassis: 1983 1984 1985 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAR1
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 1982-1987 Pontiac 6000
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1987 Pontiac 6000
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCZ7
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 1986-1990 Jeep Comanche
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1986-1990 Jeep Comanche
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep Comanche: 1986 1987 1988 1989 1990
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCEP
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 1986-1987 Pontiac Sunbird
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1986-1987 Pontiac Sunbird
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Sunbird: 1986 1987
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9QG
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 1986-1989 Ford Bronco
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986-1989 Ford Bronco
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Bronco: 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LD36
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 Trio for 1994-1996 Honda Passport
A-Premium®Part # APALR061
Alternator Rectifier Diode with Trio for 1994-1996 Honda Passport
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Passport: 1994 1995 1996
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HNL6
Note
【Note-1】 This item is a 12 Volt, 8–35 ampere diode with 103 mm OD, an M6×43 mm battery post, and an M5×31.6 mm mounting bolt.
【Note-2】 For 1996 Honda Passport & Isuzu Rodeo, this item only fits the model with Plug In from back of Alternator.
【Note-3】 For Honda & Isuzu, this item only fits the model with 70 Amp (optional).
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Alternator Rectifier Diode for 2004 Pontiac GTO
A-Premium®Part # APALR105
Alternator Rectifier Diode for 2004 Pontiac GTO
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2004 Pontiac GTO
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCC5
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 Heat Sinks for 2008-2009 Mercedes-Benz C300
A-Premium®Part # APALR086
Alternator Rectifier Diode with Heat Sinks for 2008-2009 Mercedes-Benz C300
52 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz C300: 2008 2009
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9XT
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 with Aluminum Heat Sinks for 1986 Chevrolet S10 Blazer
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 Chevrolet S10 Blazer
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HR10
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 1986-1987 1992-1993 Buick Skylark
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986-1987 1992-1993 Buick Skylark
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Skylark: 1986 1987 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPHT
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 1986 1989-1991 Oldsmobile Cutlass Ciera
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 1989-1991 Oldsmobile Cutlass Ciera
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Ciera: 1986 1989 1990 1991
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPS2
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 1986-1987 Oldsmobile Calais
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986-1987 Oldsmobile Calais
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HLWK
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 26 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.

Related Categories

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Alternator Voltage Regulator
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Alternator
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Fuel Pump
Water Pump
Water Pump