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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 1984-1988 Pontiac FieroAlternator Rectifier Diode for 1984-1988 Pontiac Fiero
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1984-1988 Pontiac Fiero
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Fiero: 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VP36
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode for 1982-1988 Pontiac 6000
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1982-1988 Pontiac 6000
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac 6000: 1982 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VQD9
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode for 1975 Jeep CJ6
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1975 Jeep CJ6
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1975 Jeep CJ6
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VL5K
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode for 1975-1988 Jeep J10
A-Premium®Part # APALR069
Alternator Rectifier Diode for 1975-1988 Jeep J10
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep J10: 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1016VKYD
Note
14 Volt, 86.4mm OD, 6-25 Ampere Button Diodes.
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Alternator Rectifier Diode with Trio for 1989-1990 Nissan Pulsar NX
A-Premium®Part # APALR036
Alternator Rectifier Diode with Trio for 1989-1990 Nissan Pulsar NX
52 Reviews
$39.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Pulsar NX: 1989 1990
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Quantity1
Item LocatedUnited States
ConditionNew
item #10154SEC
Note
Alternator Rectifier -- 12 Volt, 8-35 Ampere Diodes, M6×49.5mm Battery Post.
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Alternator Rectifier Diode with Trio for 1989-1993 Mazda B2600
A-Premium®Part # APALR036
Alternator Rectifier Diode with Trio for 1989-1993 Mazda B2600
52 Reviews
$39.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda B2600: 1989 1990 1991 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #10154TWS
Note
Alternator Rectifier -- 12 Volt, 8-35 Ampere Diodes, M6×49.5mm Battery Post.
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Alternator Rectifier Diode with Trio for 1990-1993 Mazda Miata
A-Premium®Part # APALR038
Alternator Rectifier Diode with Trio for 1990-1993 Mazda Miata
52 Reviews
$38.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda Miata: 1990 1991 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #10154SKG
Note
【Note-1】 6-35A Block/ Ampere Diodes, M5×44mm Battery Post.
【Note-2】 This item comes with Trio.
【Note-3】 For 1990-1992 Mazda Miata fit the model with Manual Transmission, not Automatic Transmission.
【Note-4】 For 1993 Mazda Miata fits the model with Automatic Transmission, not Manual Transmission.
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Alternator Rectifier Diode with Trio for 1988-1989 Ford Festiva
A-Premium®Part # APALR051
Alternator Rectifier Diode with Trio for 1988-1989 Ford Festiva
52 Reviews
$28.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Festiva: 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQDQ
Note
This item is a 12 Volt, 6–35A general diode with an M5×49 mm battery post and trio.
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Alternator Rectifier Diode With Trio for 1989-1995 Geo Tracker
A-Premium®Part # APALR121
Alternator Rectifier Diode With Trio for 1989-1995 Geo Tracker
52 Reviews
$30.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Geo Tracker: 1989 1990 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LL29
Note
This item is a 14 Volt, 8–35A block/ampere diode with an M6×49.5 mm battery post.
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Alternator Rectifier Diode for 1971-1972 Buick GS
A-Premium®Part # APALR044
Alternator Rectifier Diode for 1971-1972 Buick GS
52 Reviews
$33.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LHT8
Note
This item is a 12V/24V, 6–25A button diode with 102 mm OD.
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Alternator Rectifier Diode for 1983-1988 Oldsmobile Delta 88
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Delta 88
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Delta 88: 1983 1984 1985 1986 1987 1988
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAH8
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 T1000
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1987 Pontiac T1000
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 #1015L6QV
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 1983-1986 Jeep CJ7
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1986 Jeep CJ7
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep CJ7: 1983 1984 1985 1986
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L85Z
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 1983-1988 AMC Eagle
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 AMC Eagle
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits AMC Eagle: 1983 1984 1985 1986 1987 1988
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L86V
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 Heat Sinks for 1986-1989 Ford F-350
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986-1989 Ford F-350
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-350: 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7RP
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 1987-1989 Ford E-250 Econoline
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1987-1989 Ford E-250 Econoline
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-250 Econoline: 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC85
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
Show less
Alternator Rectifier Diode for 1994 Nissan Sentra
A-Premium®Part # APALR064
Alternator Rectifier Diode for 1994 Nissan Sentra
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1994 Nissan Sentra
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7T6
Note
【Note-1】 This item is a 12 Volt, 6-35 ampere diode with 103 mm OD, an M5×16.6 mm battery post and an M5×31.6 mm mounting bolt.
【Note-2】 This item comes without trio.
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Alternator Rectifier Diode for 1993-1995 Nissan Quest
A-Premium®Part # APALR101
Alternator Rectifier Diode for 1993-1995 Nissan Quest
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Quest: 1993 1994 1995
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LDX3
Note
This item is a 12 Volt, 8-35A general diode with 122 mm OD and an M8×54 mm battery post.
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Alternator Rectifier Diode With Trio for 1993-1994 Eagle Talon
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1993-1994 Eagle Talon
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Eagle Talon: 1993 1994
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LKRT
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 1989-1991 Hyundai Sonata
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1989-1991 Hyundai Sonata
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Sonata: 1989 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LL1D
Note
This item is a 12 Volt, 6–35A block/ampere diode with 75 mm mounting length.
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.

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