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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 1965-1967 Buick Gran SportAlternator Rectifier Diode for 1965-1967 Buick Gran Sport
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1965-1967 Buick Gran Sport
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Gran Sport: 1965 1966 1967
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LLHE
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode for 1967-1971 Chevrolet C20 Suburban
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1967-1971 Chevrolet C20 Suburban
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LKA1
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode for 1962-1967 Chevrolet Chevy II
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1962-1967 Chevrolet Chevy II
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LHP9
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode with Negative Heat Sinks for 2007-2009 Chevrolet Suburban 1500
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2009 Chevrolet Suburban 1500
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Suburban 1500: 2007 2008 2009
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6U0
Note
【Note-1】 This item is a 12 Volt, 6–50A avalanche diode with 129 mm OD and an M8×32 mm battery post (L).
【Note-2】 This item comes with 129 mm negative heat sink.
【Note-3】 This item fits the model with 120-150 Amp.
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Alternator Rectifier Diode for 1965-1971 Cadillac Fleetwood
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1965-1971 Cadillac Fleetwood
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Fleetwood: 1965 1966 1967 1968 1969 1970 1971
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LD85
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode for 1965-1967 Cadillac Calais
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1965-1967 Cadillac Calais
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Calais: 1965 1966 1967
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGU3
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1963-1971 Cadillac DeVille
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1971 Cadillac DeVille
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac DeVille: 1963 1964 1965 1966 1967 1968 1969 1970 1971
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LEHA
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1967 Buick Electra
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1967 Buick Electra
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1967 Buick Electra
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LELX
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1967-1971 Chevrolet C10 Suburban
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1967-1971 Chevrolet C10 Suburban
52 Reviews
$32.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C10 Suburban: 1967 1968 1969 1970 1971
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LG4V
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
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Alternator Rectifier Diode with Trio for 1985 Dodge Lancer
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1985 Dodge Lancer
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1985 Dodge Lancer
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Quantity1
Item LocatedUnited States
ConditionNew
item #101841P9
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1984-1985 Plymouth Caravelle
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Plymouth Caravelle
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Plymouth Caravelle: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Z0R
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
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Alternator Rectifier Diode with Trio for 1984-1985 Chrysler LeBaron
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Chrysler LeBaron
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler LeBaron: 1984 1985
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZU4
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1984-1985 Plymouth Reliant
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Plymouth Reliant
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Plymouth Reliant: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XR0
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1985-1987 Audi Coupe
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1985-1987 Audi Coupe
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi Coupe: 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018421U
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Jetta: 1986 1987 1988 1989 1990 1991 1992
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZG4
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1986-1987 Audi 4000
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1986-1987 Audi 4000
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi 4000: 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841G7
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2013 Chevrolet Silverado 2500 HD
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2013 Chevrolet Silverado 2500 HD
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Silverado 2500 HD: 2007 2008 2009 2010 2011 2012 2013
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA68
Note
【Note-1】 This item is a 12 Volt, 6–50A avalanche diode with 129 mm OD and an M8×32 mm battery post (L).
【Note-2】 This item comes with 129 mm negative heat sink.
【Note-3】 This item fits the model with 120-150 Amp.
Show less
Alternator Rectifier Diode with Negative Heat Sinks for 2008 Chevrolet Silverado 1500
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2008 Chevrolet Silverado 1500
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2008 Chevrolet Silverado 1500
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LALS
Note
【Note-1】 This item is a 12 Volt, 6–50A avalanche diode with 129 mm OD and an M8×32 mm battery post (L).
【Note-2】 This item comes with 129 mm negative heat sink.
【Note-3】 This item fits the model with 120-150 Amp.
Show less
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2012 Chevrolet Silverado 3500 HD
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2012 Chevrolet Silverado 3500 HD
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Silverado 3500 HD: 2007 2008 2009 2010 2011 2012
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L77K
Note
【Note-1】 This item is a 12 Volt, 6–50A avalanche diode with 129 mm OD and an M8×32 mm battery post (L).
【Note-2】 This item comes with 129 mm negative heat sink.
【Note-3】 This item fits the model with 120-150 Amp.
Show less
Alternator Rectifier Diode for 1970-1972 Chevrolet G30 Van
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1970-1972 Chevrolet G30 Van
52 Reviews
$32.99
Low stock: Only 3 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 #1015LLHV
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
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Page 10 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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