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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 2004 Ford F-150 HeritageAlternator Rectifier Diode for 2004 Ford F-150 Heritage
A-Premium®Part # APALR117
Alternator Rectifier Diode for 2004 Ford F-150 Heritage
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2004 Ford F-150 Heritage
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Quantity1
Item LocatedUnited States
ConditionNew
item #101968AQ
Note
12 Volt; 136mm OD; 8-35A General Diodes.
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Alternator Rectifier Diode with Heat Sink for 2004-2005 BMW 530i
A-Premium®Part # APALR154
Alternator Rectifier Diode with Heat Sink for 2004-2005 BMW 530i
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 530i: 2004 2005
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VRW7
Note
【Note-1】 12 Volt, 129mm OD, 6-50A Press-fit/Avalanche, With 129 mm Negative Heat Sink, With M8×26mm Battery Post(L), With M8×34.5mm Battery Post(R).
【Note-2】 This item comes without Airduct.
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Alternator Rectifier Diode for 1984-1985 Pontiac J2000 Sunbird
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1984-1985 Pontiac J2000 Sunbird
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 #1016VLQD
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode for 1977-1984 Pontiac Phoenix
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1977-1984 Pontiac Phoenix
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Phoenix: 1977 1978 1979 1980 1981 1982 1983 1984
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VR14
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode for 1983-1987 Buick Skylark
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1987 Buick Skylark
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Skylark: 1983 1984 1985 1986 1987
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L96C
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 1985-1987 Pontiac Sunburst
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1985-1987 Pontiac Sunburst
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Sunburst: 1985 1986 1987
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAZL
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 Trio for 1988 Ford Thunderbird
A-Premium®Part # APALR116
Alternator Rectifier Diode With Trio for 1988 Ford Thunderbird
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1988 Ford Thunderbird
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LDZQ
Note
This item is a 12 Volt, 6-35A block/ampere diode with 85 mm mounting length and an M6×49.5 mm battery post.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1988-1995 Chevrolet C2500
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1988-1995 Chevrolet C2500
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C2500: 1988 1989 1990 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HLNQ
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 1989-1991 Chevrolet C35
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1989-1991 Chevrolet C35
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C35: 1989 1990 1991
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HNDG
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 1992-1995 Chevrolet C1500 Suburban
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1992-1995 Chevrolet C1500 Suburban
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C1500 Suburban: 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRXH
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 Chevrolet Astro
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 Chevrolet Astro
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 #1015HQQL
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 1987-1995 Chevrolet Corsica
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1987-1995 Chevrolet Corsica
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Corsica: 1987 1988 1989 1990 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQTE
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 GMC S15 Jimmy
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 GMC S15 Jimmy
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 #1015HS0K
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 Dodge Power Ram 50
A-Premium®Part # APALR129
Alternator Rectifier Diode with Aluminum Heat Sinks for 1986 Dodge Power Ram 50
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Dodge Power Ram 50
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184HGR
Note
【Note-1】 12 Volt, 94mm OD, 6-35 Ampere Diodes.
【Note-2】 This item comes with Trio & Aluminum Heat Sinks.
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Alternator Rectifier Diode for 2010 Dodge Ram 2500
A-Premium®Part # APALR076
Alternator Rectifier Diode for 2010 Dodge Ram 2500
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 2500
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018414Q
Note
12 Volt, 128mm OD, 12-50 Avalanche Diodes, M8×59.5mm Battery Post.
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Alternator Rectifier Diode with Trio for 1990-1993 Volkswagen Passat
A-Premium®Part # APALR178
Alternator Rectifier Diode with Trio for 1990-1993 Volkswagen Passat
52 Reviews
$26.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Passat: 1990 1991 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183XT2
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 1983-1985 Volkswagen Vanagon
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1983-1985 Volkswagen Vanagon
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Vanagon: 1983 1984 1985
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183XVN
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 Volkswagen Scirocco
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984-1985 Volkswagen Scirocco
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Scirocco: 1984 1985
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y0Q
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 1999-2001 Mercedes-Benz E55 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 1999-2001 Mercedes-Benz E55 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 E55 AMG: 1999 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #101840KU
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 1995-1998 Nissan 200SX
A-Premium®Part # APALR135
Alternator Rectifier Diode for 1995-1998 Nissan 200SX
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan 200SX: 1995 1996 1997 1998
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Quantity1
Item LocatedUnited States
Part interchange
L170G-13201, L170G-53203, 23230-0M000, 23230-0M001, CQ1080555, GD109578B
ConditionNew
item #1015L8ZP
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Page 34 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

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