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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 with Negative Heat Sinks for 2008 Chevrolet Silverado 1500Alternator 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
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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.
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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
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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 2003-2005 Hyundai Sonata
A-Premium®Part # APALR107
Alternator Rectifier Diode for 2003-2005 Hyundai Sonata
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Sonata: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8ZH
Note
This item is a 14 Volt, 3–50A avalanche diode with 107 mm OD and an M8×40 mm battery post, without trio.
Show less
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2009 Chevrolet Tahoe
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2009 Chevrolet Tahoe
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Tahoe: 2007 2008 2009
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7YH
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 Suburban 2500
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2012 Chevrolet Suburban 2500
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Suburban 2500: 2007 2008 2009 2010 2011 2012
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7K7
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 1964-1971 Chevrolet G10 Van
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1964-1971 Chevrolet G10 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 #1015LE59
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1963-1971 Chevrolet C30 Pickup
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1971 Chevrolet C30 Pickup
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 #1015LH0S
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2010 GMC Yukon
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2010 GMC Yukon
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Yukon: 2007 2008 2009 2010
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAQH
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 Trio for 1984-1988 BMW 528e
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1988 BMW 528e
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 528e: 1984 1985 1986 1987 1988
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841QR
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 Chrysler New Yorker
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1984-1985 Chrysler New Yorker
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler New Yorker: 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841GQ
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
Alternator Rectifier Diode with Trio for 1983-1988 Porsche 944
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1983-1988 Porsche 944
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Porsche 944: 1983 1984 1985 1986 1987 1988
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183YSW
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 GMC Sierra 2500 HD
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2007-2013 GMC Sierra 2500 HD
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Sierra 2500 HD: 2007 2008 2009 2010 2011 2012 2013
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC43
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 GMC Sierra 1500
A-Premium®Part # APALR156
Alternator Rectifier Diode with Negative Heat Sinks for 2008 GMC Sierra 1500
52 Reviews
$28.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2008 GMC Sierra 1500
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8D2
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 1967-1971 Chevrolet Camaro
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1967-1971 Chevrolet Camaro
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 #1015LKZ2
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1963-1971 Chevrolet Impala
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1971 Chevrolet Impala
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 #1015LGU4
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 1963-1968 Buick Riviera
A-Premium®Part # APALR168
Alternator Rectifier Diode for 1963-1968 Buick Riviera
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 #1015LK9A
Note
This item is a 12 Volt, 6-35A diode with 123 mm OD.
Show less
Alternator Rectifier Diode for 2013-2014 Hyundai Genesis Coupe
A-Premium®Part # APALR107
Alternator Rectifier Diode for 2013-2014 Hyundai Genesis Coupe
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Hyundai Genesis Coupe: 2013 2014
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6RU
Note
This item is a 14 Volt, 3–50A avalanche diode with 107 mm OD and an M8×40 mm battery post, without trio.
Show less
Alternator Rectifier Diode for 2006 Kia Spectra5
A-Premium®Part # APALR107
Alternator Rectifier Diode for 2006 Kia Spectra5
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2006 Kia Spectra5
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7DZ
Note
This item is a 14 Volt, 3–50A avalanche diode with 107 mm OD and an M8×40 mm battery post, without trio.
Show less
Alternator Rectifier Diode for 2006-2009 Kia Rio
A-Premium®Part # APALR107
Alternator Rectifier Diode for 2006-2009 Kia Rio
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Kia Rio: 2006 2007 2008 2009
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9GE
Note
This item is a 14 Volt, 3–50A avalanche diode with 107 mm OD and an M8×40 mm battery post, without trio.
Show less
Alternator Rectifier Diode with Trio for 1990 1992 Jaguar Vanden Plas
A-Premium®Part # APALR111
Alternator Rectifier Diode with Trio for 1990 1992 Jaguar Vanden Plas
52 Reviews
$34.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jaguar Vanden Plas: 1990 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101841S4
Note
This item comes with 12 Volt, 120mm OD, 8-35 Ampere General Diodes, With Trio.
Show less
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Page 11 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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