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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 1986 Pontiac SunbirdAlternator Rectifier Diode for 1986 Pontiac Sunbird
A-Premium®Part # APALR175
Alternator Rectifier Diode for 1986 Pontiac Sunbird
52 Reviews
$20.99
Low stock: Only 3 left
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2-year warranty
90 days free return
Fits 1986 Pontiac Sunbird
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6S9
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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Alternator Rectifier Diode With Trio for 1998-2001 Chevrolet Metro
A-Premium®Part # APALR121
Alternator Rectifier Diode With Trio for 1998-2001 Chevrolet Metro
52 Reviews
$30.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Metro: 1998 1999 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LH9X
Note
This item is a 14 Volt, 8–35A block/ampere diode with an M6×49.5 mm battery post.
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Alternator Rectifier Diode with M6×44.5mm Battery Post for 2000-2001 Mazda MPV
A-Premium®Part # APALR106
Alternator Rectifier Diode with M6×44.5mm Battery Post for 2000-2001 Mazda MPV
52 Reviews
$33.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda MPV: 2000 2001
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LK8P
Note
【Note-1】 This item is a 12 Volt, 8–35A diode with 100 mm mounting length and an M6×44.5 mm battery post.
【Note-2】 This item comes without trio and capacitor.
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Alternator Rectifier Diode with Heat Sinks for 2007-2013 Toyota Tacoma
A-Premium®Part # APALR160
Alternator Rectifier Diode with Heat Sinks for 2007-2013 Toyota Tacoma
52 Reviews
$41.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Toyota Tacoma: 2007 2008 2009 2010 2011 2012 2013
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LD2C
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 Pontiac Grand Prix
A-Premium®Part # APALR172
Alternator Rectifier Diode with Aluminum Heat Sinks for 1994 Pontiac Grand Prix
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1994 Pontiac Grand Prix
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LD2G
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 with Negative Heat Sinks for 2003-2006 Dodge Sprinter 2500
A-Premium®Part # APALR151
Alternator Rectifier Diode with Negative Heat Sinks for 2003-2006 Dodge Sprinter 2500
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Sprinter 2500: 2003 2004 2005 2006
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9DU
Note
【Note-1】 This item is a 14 Volt, 6–60A press-fit/ampere diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×32 mm battery post (R).
【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 1983-1986 Chevrolet C60
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1983-1986 Chevrolet C60
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C60: 1983 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LEUW
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Alternator Rectifier Diode for 1983-1986 Chevrolet C20
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1983-1986 Chevrolet C20
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C20: 1983 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGC8
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Alternator Rectifier Diode for 1983-1986 Chevrolet C20 Suburban
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1983-1986 Chevrolet C20 Suburban
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C20 Suburban: 1983 1984 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LKAS
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Alternator Rectifier Diode with Trio for 1985-1986 Mitsubishi Mirage
A-Premium®Part # APALR051
Alternator Rectifier Diode with Trio for 1985-1986 Mitsubishi Mirage
52 Reviews
$28.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Mirage: 1985 1986
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HPGX
Note
This item is a 12 Volt, 6–35A general diode with an M5×49 mm battery post and trio.
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Alternator Rectifier Diode for 1971-1972 1974-1980 Buick Electra
A-Premium®Part # APALR044
Alternator Rectifier Diode for 1971-1972 1974-1980 Buick Electra
52 Reviews
$33.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LE2E
Note
This item is a 12V/24V, 6–25A button diode with 102 mm OD.
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Alternator Rectifier Diode for 1983-1990 Jeep Wagoneer
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1990 Jeep Wagoneer
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep Wagoneer: 1983 1984 1985 1986 1987 1988 1989 1990
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCZ4
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Alternator Rectifier Diode for 1985-1987 Oldsmobile Cutlass Salon
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1985-1987 Oldsmobile Cutlass Salon
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Cutlass Salon: 1985 1986 1987
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LC4C
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Alternator Rectifier Diode for 1983-1988 Oldsmobile Custom Cruiser
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Custom Cruiser
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Custom Cruiser: 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCRG
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1987-1988 Buick Skyhawk
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1987-1988 Buick Skyhawk
52 Reviews
$23.99
Low stock: Only 4 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 #1015HNDR
Note
【Note-1】 This item is a 12 Volt, 6-35A press-fit/avalanche diode with 100.3 mm OD.
【Note-2】 This item comes with aluminum heat sinks.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1988-1995 Chevrolet C3500
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1988-1995 Chevrolet C3500
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C3500: 1988 1989 1990 1991 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HRWC
Note
【Note-1】 This item is a 12 Volt, 6-35A press-fit/avalanche diode with 100.3 mm OD.
【Note-2】 This item comes with aluminum heat sinks.
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Alternator Rectifier Diode for 1982-1983 Pontiac Grand LeMans
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1983 Pontiac Grand LeMans
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCPN
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1987-1989 Cadillac Allante
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1987-1989 Cadillac Allante
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Allante: 1987 1988 1989
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8HR
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1987-1990 Jeep Wrangler
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1987-1990 Jeep Wrangler
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep Wrangler: 1987 1988 1989 1990
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCS6
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
Alternator Rectifier Diode for 1983-1990 Jeep Cherokee
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1990 Jeep Cherokee
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep Cherokee: 1983 1984 1985 1986 1987 1988 1989 1990
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9RZ
Note
【Note-1】 This item is a 12 Volt, 6–50A button diode with 80 mm OD.
【Note-2】 For 1983-1988 Oldsmobile Delta 88, this item fits for the Sedan model only, does not fit for the Coupe model.
Show less
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Page 58 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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