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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 Trio for 1993-1994 Eagle TalonAlternator 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
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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
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LL1D
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 1987-1989 Mitsubishi Montero
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1987-1989 Mitsubishi Montero
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Montero: 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGA2
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 Heat Sinks for 2006-2011 Mercedes-Benz C350
A-Premium®Part # APALR086
Alternator Rectifier Diode with Heat Sinks for 2006-2011 Mercedes-Benz C350
52 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz C350: 2006 2007 2008 2009 2010 2011
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L805
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 Heat Sinks for 2009-2011 Mercedes-Benz SLK300
A-Premium®Part # APALR086
Alternator Rectifier Diode with Heat Sinks for 2009-2011 Mercedes-Benz SLK300
52 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz SLK300: 2009 2010 2011
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8X0
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 Trio Capacitor for 1993-2002 Mazda 626
A-Premium®Part # APALR067
Alternator Rectifier Diode with Trio Capacitor for 1993-2002 Mazda 626
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda 626: 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HNTT
Note
【Note-1】 For Eagle Talon 1995 & 1997, this item fits the model with naturally aspirated engine only, does not fit the Turbocharged model.
【Note-2】 For Eagle Talon 1996 & 1998, this item fits the model with Turbocharged engine, does not fit the naturally aspirated model.
【Note-3】 For 1996-1997 Mitsubishi Eclipse, this item fits the model with automatic transmission, does not fit the model with manual transmission.
【Note-4】 This item is a 12 Volt, 6–35 ampere diode with 100 mm mounting length, an M8×54 mm battery post, and trio/capacitor.
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Alternator Rectifier Diode with Trio Capacitor for 1993-1997 Ford Probe
A-Premium®Part # APALR067
Alternator Rectifier Diode with Trio Capacitor for 1993-1997 Ford Probe
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Probe: 1993 1994 1995 1996 1997
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRH2
Note
【Note-1】 For Eagle Talon 1995 & 1997, this item fits the model with naturally aspirated engine only, does not fit the Turbocharged model.
【Note-2】 For Eagle Talon 1996 & 1998, this item fits the model with Turbocharged engine, does not fit the naturally aspirated model.
【Note-3】 For 1996-1997 Mitsubishi Eclipse, this item fits the model with automatic transmission, does not fit the model with manual transmission.
【Note-4】 This item is a 12 Volt, 6–35 ampere diode with 100 mm mounting length, an M8×54 mm battery post, and trio/capacitor.
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Alternator Rectifier Diode with Heat Sinks for 2005-2006 Toyota Sienna
A-Premium®Part # APALR160
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Toyota Sienna
52 Reviews
$41.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Sienna: 2005 2006
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8UZ
Note
This item is a 12 Volt, 12–50A avalanche diode with 117 mm OD and an M6×33 mm battery post.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1994 Chevrolet S10
A-Premium®Part # APALR172
Alternator Rectifier Diode with Aluminum Heat Sinks for 1994 Chevrolet S10
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1994 Chevrolet S10
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L718
Note
【Note-1】 This item is a 12 Volt, 6–35A avalanche press-fit diode with 102 mm OD and an M8×46 mm battery post.
【Note-2】 For GMC Safari, this item only fits the model with 100 or 105 Amp Alternator.
【Note-3】 For Lumina & Monte Carlo & Pontiac, this item only fits the model with 105 Amp Alternator.
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Alternator Rectifier Diode for 1991-1993 Nissan NX
A-Premium®Part # APALR062
Alternator Rectifier Diode for 1991-1993 Nissan NX
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan NX: 1991 1992 1993
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9UC
Note
This item is a 12 Volt, 8–35A diode with 103 mm OD, an M6×43 mm battery post, and an M5×31.6 mm mounting bolt.
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Alternator Rectifier Diode for 1989 GMC V3500
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1989 GMC V3500
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HR5A
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 1997-2000 GMC C6500 Topkick
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1997-2000 GMC C6500 Topkick
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC C6500 Topkick: 1997 1998 1999 2000
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRXR
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 1990-1995 GMC C1500
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1990-1995 GMC C1500
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC C1500: 1990 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HP64
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 1988-1991 Honda CRX
A-Premium®Part # APALR096
Alternator Rectifier Diode with Trio for 1988-1991 Honda CRX
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda CRX: 1988 1989 1990 1991
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LL4A
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 with Trio for 1985-1986 Plymouth Colt
A-Premium®Part # APALR096
Alternator Rectifier Diode with Trio for 1985-1986 Plymouth Colt
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Plymouth Colt: 1985 1986
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LDL9
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 SL1
A-Premium®Part # APALR058
Alternator Rectifier Diode for 1998-2002 Saturn SL1
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Saturn SL1: 1998 1999 2000 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HS31
Note
This item is a 12 Volt, 6-50A avalanche diode with 100 mm OD.
Show less
Alternator Rectifier Diode for 2001 2003-2009 Dodge Ram 3500
A-Premium®Part # APALR084
Alternator Rectifier Diode for 2001 2003-2009 Dodge Ram 3500
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 3500: 2001 2003 2004 2005 2006 2007 2008 2009
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HP8R
Note
This item is a 12 Volt, 6-60A diode with 120 mm OD, an M8×59.5 mm battery post (L) and an M8×22 mm battery post (R).
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Alternator Rectifier Diode for 2001 Dodge Ram 1500
A-Premium®Part # APALR084
Alternator Rectifier Diode for 2001 Dodge Ram 1500
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2001 Dodge Ram 1500
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPSX
Note
This item is a 12 Volt, 6-60A diode with 120 mm OD, an M8×59.5 mm battery post (L) and an M8×22 mm battery post (R).
Show less
Alternator Rectifier Diode with Heat Sinks for 2006 Mercedes-Benz ML350
A-Premium®Part # APALR153
Alternator Rectifier Diode with Heat Sinks for 2006 Mercedes-Benz ML350
52 Reviews
$31.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2006 Mercedes-Benz ML350
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HLH6
Note
This item is a 12 Volt, 6–50A avalanche diode with 129 mm OD, an M8×34.5 mm battery post (L), and an M8×22 mm battery post (R).
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Alternator Rectifier Diode for 1983-1986 Pontiac Bonneville
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1983-1986 Pontiac Bonneville
52 Reviews
$20.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Bonneville: 1983 1984 1985 1986
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7UE
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 94.9 mm OD.
【Note-2】 For 1984-1986 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Page 62 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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