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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 2009-2013 Mazda 6Alternator Rectifier Diode for 2009-2013 Mazda 6
A-Premium®Part # APALR052
Alternator Rectifier Diode for 2009-2013 Mazda 6
52 Reviews
$43.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda 6: 2009 2010 2011 2012 2013
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183ZD6
Note
12 Volt, 128mm OD, 12-50A General Diodes
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Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
A-Premium®Part # APALR178
Alternator Rectifier Diode with Trio for 1986-1992 Volkswagen Jetta
52 Reviews
$26.99
Low stock: Only 4 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 #101841P8
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 1984-1985 Audi 5000
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1984-1985 Audi 5000
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi 5000: 1984 1985
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y57
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 1985 Volkswagen Cabriolet
A-Premium®Part # APALR053
Alternator Rectifier Diode with Trio for 1985 Volkswagen Cabriolet
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1985 Volkswagen Cabriolet
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018422W
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 for 1981-1982 Mazda GLC
A-Premium®Part # APALR123
Alternator Rectifier Diode for 1981-1982 Mazda GLC
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda GLC: 1981 1982
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y42
Note
【Note-1】 12 Volt, Mounting Length: 85mm, 6-35A General Diodes.
【Note-2】 This item comes with Copper Heat Sinks & Trio.
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Alternator Rectifier Diode with Trio/Capacitor for 1991-1995 Dodge Stealth
A-Premium®Part # APALR122
Alternator Rectifier Diode with Trio/Capacitor for 1991-1995 Dodge Stealth
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Stealth: 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1018419G
Note
【Note-1】 12 Volt, 6-35A General Diodes, With M6×49.5mm Battery Post.
【Note-2】 It not fits the model with 90 Amp.
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Alternator Rectifier Diode for 1991-1992 Nissan Axxess
A-Premium®Part # APALR148
Alternator Rectifier Diode for 1991-1992 Nissan Axxess
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Axxess: 1991 1992
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184G9N
Note
12 Volt, 85mm OD, 8-35 Ampere Diodes, With M5×44mm Battery Post
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Alternator Rectifier Diode for 1987-1988 Mitsubishi Mirage
A-Premium®Part # APALR144
Alternator Rectifier Diode for 1987-1988 Mitsubishi Mirage
52 Reviews
$26.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Mirage: 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184110
Note
【Note-1】 12 Volt, 96.7mm OD, 6-35A Diodes, M5×49mm Battery Post, with Trio.
【Note-2】 For Mitsubishi Mirage, this item fits the model to 4/1988.
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Alternator Rectifier Diode for 1999-2004 Jeep Grand Cherokee
A-Premium®Part # APALR138
Alternator Rectifier Diode for 1999-2004 Jeep Grand Cherokee
52 Reviews
$36.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep Grand Cherokee: 1999 2000 2001 2002 2003 2004
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184U2X
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, With M8×22mm Battery Post(L), With M8×32mm Battery Post(R).
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Alternator Rectifier Diode for 2003-2006 Dodge Durango
A-Premium®Part # APALR138
Alternator Rectifier Diode for 2003-2006 Dodge Durango
52 Reviews
$36.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Durango: 2003 2004 2005 2006
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Quantity1
Item LocatedUnited States
ConditionNew
item #10184TLV
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, With M8×22mm Battery Post(L), With M8×32mm Battery Post(R).
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Alternator Rectifier Diode for 2003-2004 Cadillac Escalade ESV
A-Premium®Part # APALR039
Alternator Rectifier Diode for 2003-2004 Cadillac Escalade ESV
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade ESV: 2003 2004
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Quantity1
Item LocatedUnited States
ConditionNew
item #101841R0
Note
12V, 116mm OD, 6-50A Avalanche Diodes, M6×53.5mm Battery Post
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Alternator Rectifier Diode for 2003-2005 Chevrolet C4500 Kodiak
A-Premium®Part # APALR039
Alternator Rectifier Diode for 2003-2005 Chevrolet C4500 Kodiak
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C4500 Kodiak: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183WTQ
Note
12V, 116mm OD, 6-50A Avalanche Diodes, M6×53.5mm Battery Post
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Alternator Rectifier Diode for 2002-2004 Cadillac Escalade
A-Premium®Part # APALR039
Alternator Rectifier Diode for 2002-2004 Cadillac Escalade
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade: 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018426H
Note
12V, 116mm OD, 6-50A Avalanche Diodes, M6×53.5mm Battery Post
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Alternator Rectifier Diode with Trio for 2002 2005 Mercedes-Benz ML500
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2002 2005 Mercedes-Benz ML500
52 Reviews
$57.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz ML500: 2002 2005
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Quantity1
Item LocatedUnited States
ConditionNew
item #10183XS0
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 with Trio for 2000-2003 Mercedes-Benz ML55 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 2000-2003 Mercedes-Benz ML55 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 ML55 AMG: 2000 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XEV
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 with Trio for 1998-2000 Mercedes-Benz C43 AMG
A-Premium®Part # APALR109
Alternator Rectifier Diode with Trio for 1998-2000 Mercedes-Benz C43 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 C43 AMG: 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183Y6Z
Note
【Note-1】 12 Volt, 122mm OD, 12-50A Avalanche Diodes, M8×30mm Battery Post.
【Note-2】 This item comes with Trio.
Show less
Alternator Rectifier Diode with Aluminum Heat Sinks for 2002-2004 Chrysler 300M
A-Premium®Part # APALR002
Alternator Rectifier Diode with Aluminum Heat Sinks for 2002-2004 Chrysler 300M
52 Reviews
$42.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler 300M: 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #10183XL3
Note
【Note-1】 14 Volt, 117mm OD, 12-35A Avalanche Diodes, M8×49mm Battery Post.
【Note-2】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode for 1992-1997 Volkswagen Passat
A-Premium®Part # APALR017
Alternator Rectifier Diode for 1992-1997 Volkswagen Passat
52 Reviews
$31.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Passat: 1992 1993 1994 1995 1996 1997
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101887K6
Note
14 Volt, Diodes: 6-50A Avalanche, Diameter OD: 112mm, With M8x30mm Battery Post, With Triot.
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Alternator Rectifier Diode for 2002-2005 Ford Explorer
A-Premium®Part # APALR089
Alternator Rectifier Diode for 2002-2005 Ford Explorer
52 Reviews
$42.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Explorer: 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
139668, F5OZ-10300FA, F5OZ10300FA, FR3003, RF-063, RF063
ConditionNew
item #1018SQYG
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Alternator Rectifier Diode for 2001-2008 Mazda B2300
A-Premium®Part # APALR075
Alternator Rectifier Diode for 2001-2008 Mazda B2300
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda B2300: 2001 2002 2003 2004 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
233208, FR6013, RF-113, RF113
ConditionNew
item #1018ST5U
Show less
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Page 41 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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Alternator Voltage Regulator
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