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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 1996-1998 Acura TLAlternator Rectifier Diode for 1996-1998 Acura TL
A-Premium®Part # APALR005
Alternator Rectifier Diode for 1996-1998 Acura TL
52 Reviews
$28.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #101882PP
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
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Alternator Rectifier Diode for 2006-2009 Hyundai Sonata
A-Premium®Part # APALR005
Alternator Rectifier Diode for 2006-2009 Hyundai Sonata
52 Reviews
$28.99
Low stock: Only 4 left
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2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #10187ZG0
Note
【Note-1】 12 Volt; 113mm OD; 8-50A Cell/Ampere Diodes; M8x47mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
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Alternator Rectifier Diode for 1975-1979 1986-1989 Ford F-250
A-Premium®Part # APALR068
Alternator Rectifier Diode for 1975-1979 1986-1989 Ford F-250
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-250: 1975 1976 1977 1978 1979 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
Part interchange
GY-1026, D2OZ10304A, 131422, RF-09H, FR1270, D20Z10304A, GY1026A, D13
ConditionNew
item #1018SNT3
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Alternator Rectifier Diode for 1975-1979 1986-1989 Ford E-150 Econoline
A-Premium®Part # APALR068
Alternator Rectifier Diode for 1975-1979 1986-1989 Ford E-150 Econoline
52 Reviews
$30.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-150 Econoline: 1975 1976 1977 1978 1979 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
Part interchange
GY-1026, D2OZ10304A, 131422, RF-09H, FR1270, D20Z10304A, GY1026A, D13
ConditionNew
item #1018SSTD
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Alternator Rectifier for 1993 Eagle 2000 GTX
A-Premium®Part # APALR025
Alternator Rectifier for 1993 Eagle 2000 GTX
52 Reviews
$36.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1993 Eagle 2000 GTX
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Quantity1
Item LocatedUnited States
Part interchange
A860T35270, E9PZ10304B, 135252, RM-41, IMR10040
ConditionNew
item #1013GTDL
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Alternator Rectifier for 1989 1991-1992 Mitsubishi Mirage
A-Premium®Part # APALR025
Alternator Rectifier for 1989 1991-1992 Mitsubishi Mirage
52 Reviews
$36.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Mirage: 1989 1991 1992
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
A860T35270, E9PZ10304B, 135252, RM-41, IMR10040
ConditionNew
item #1013GT7X
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Alternator Rectifier Diode for 2000-2006 Audi TT
A-Premium®Part # APALR024
Alternator Rectifier Diode for 2000-2006 Audi TT
52 Reviews
$51.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Audi TT: 2000 2001 2002 2003 2004 2005 2006
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523A7
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, M8×22mm Battery Post(L), M8×32mm Battery Post(R).
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Alternator Rectifier Diode for 2003-2005 Mercedes-Benz ML350
A-Premium®Part # APALR024
Alternator Rectifier Diode for 2003-2005 Mercedes-Benz ML350
52 Reviews
$51.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercedes-Benz ML350: 2003 2004 2005
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Quantity1
Item LocatedUnited States
ConditionNew
item #101523T4
Note
14 Volt, 120mm OD, 6-50A Avalanche Diodes, M8×22mm Battery Post(L), M8×32mm Battery Post(R).
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Alternator Rectifier Diode for 1991-1999 Cadillac DeVille
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1991-1999 Cadillac DeVille
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac DeVille: 1991 1992 1993 1994 1995 1996 1997 1998 1999
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Quantity1
Item LocatedUnited States
ConditionNew
item #10152531
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
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Alternator Rectifier Diode for 1996-1999 Oldsmobile LSS
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1996-1999 Oldsmobile LSS
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile LSS: 1996 1997 1998 1999
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Quantity1
Item LocatedUnited States
ConditionNew
item #10152534
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
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Alternator Rectifier Diode for 1999 Chevrolet Monte Carlo
A-Premium®Part # APALR043
Alternator Rectifier Diode for 1999 Chevrolet Monte Carlo
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1999 Chevrolet Monte Carlo
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015255H
Note
12 Volt, 118mm OD, Diodes: 6-50A Jumbo Avalanche Button.
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Alternator Rectifier Diode with Trio Capacitor for 1989 Mitsubishi Fuso FE
A-Premium®Part # APALR023
Alternator Rectifier Diode with Trio Capacitor for 1989 Mitsubishi Fuso FE
52 Reviews
$58.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1989 Mitsubishi Fuso FE
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Quantity1
Item LocatedUnited States
ConditionNew
item #101526P5
Note
【Note-1】 14 Volt, 120.5mm OD, 8-35A Diodes, M6×49.5mm Battery Post.
【Note-2】 This item comes with Trio/Capacitor.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2008 Buick Lucerne
A-Premium®Part # APALR009
Alternator Rectifier Diode with Aluminum Heat Sinks for 2006-2008 Buick Lucerne
52 Reviews
$57.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Buick Lucerne: 2006 2007 2008
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Quantity1
Item LocatedUnited States
ConditionNew
item #101524Y2
Note
【Note-1】 12 Volt, 117mm OD, 12-35A Avalanche Diodes, M6×34.5mm Battery Post.;
【Note-2】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode for 1998-2001 Chrysler Concorde
A-Premium®Part # APALR048
Alternator Rectifier Diode for 1998-2001 Chrysler Concorde
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler Concorde: 1998 1999 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC5Z
Note
【Note-1】 This item is a 12 Volt, 8-35A General diode with 100 mm OD and an M6×44.5 mm battery post.
【Note-2】 This item comes without trio and capacitor.
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Alternator Rectifier Diode for 2007-2009 Volkswagen Eos
A-Premium®Part # APALR082
Alternator Rectifier Diode for 2007-2009 Volkswagen Eos
52 Reviews
$30.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Volkswagen Eos: 2007 2008 2009
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPEX
Note
This item is a 12 Volt, 6-50A avalanche diode with 120 mm OD, an M8×22 mm battery post (L) and an M8×32 mm battery post (R).
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Alternator Rectifier Diode with Trio for 1990-1994 Subaru Legacy
A-Premium®Part # APALR102
Alternator Rectifier Diode with Trio for 1990-1994 Subaru Legacy
52 Reviews
$30.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Subaru Legacy: 1990 1991 1992 1993 1994
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9CR
Note
This item is a 12 Volt, 6-35A diode with an M5×44 mm battery post.
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Alternator Rectifier Diode for 1991-1995 GMC C3500HD
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1991-1995 GMC C3500HD
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC C3500HD: 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HQH6
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 1986 Buick Century
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1986 Buick Century
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 #1015HP5S
Note
This item is a 12 Volt, 3-50A press-fit/avalanche diode with 102 mm OD.
Show less
Alternator Rectifier Diode for 1985 Pontiac Firebird
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1985 Pontiac Firebird
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 #1015HRR5
Note
This item is a 12 Volt, 3-50A press-fit/avalanche diode with 102 mm OD.
Show less
Alternator Rectifier Diode for 1986-1990 Cadillac DeVille
A-Premium®Part # APALR070
Alternator Rectifier Diode for 1986-1990 Cadillac DeVille
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 #1015HRZZ
Note
This item is a 12 Volt, 3-50A press-fit/avalanche diode with 102 mm OD.
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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