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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 1999-2001 Chrysler 300MAlternator Rectifier Diode for 1999-2001 Chrysler 300M
A-Premium®Part # APALR048
Alternator Rectifier Diode for 1999-2001 Chrysler 300M
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler 300M: 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LASL
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 1982-1987 Pontiac Firebird
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1987 Pontiac Firebird
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCU4
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 Trio Capacitor for 1995-2000 Chrysler Sebring
A-Premium®Part # APALR057
Alternator Rectifier Diode with Trio Capacitor for 1995-2000 Chrysler Sebring
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chrysler Sebring: 1995 1996 1997 1998 1999 2000
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAHY
Note
【Note-1】 This item is a 12 Volt, 8–35A press-fit/ampere diode with 100 mm OD and an M6×49.5 mm battery post.
【Note-2】 This item comes with trio/capacitor.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1992-1995 Chevrolet C2500 Suburban
A-Premium®Part # APALR165
Alternator Rectifier Diode with Aluminum Heat Sinks for 1992-1995 Chevrolet C2500 Suburban
52 Reviews
$23.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet C2500 Suburban: 1992 1993 1994 1995
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HLGZ
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 1995-1996 Nissan 200SX
A-Premium®Part # APALR139
Alternator Rectifier Diode for 1995-1996 Nissan 200SX
52 Reviews
$54.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan 200SX: 1995 1996
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015HR8W
Note
This item is a 12 Volt, 8-35A diode with 114.5 mm OD.
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Alternator Rectifier Diode for 1982-1987 Pontiac Grand Prix
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1982-1987 Pontiac Grand Prix
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 #1015L8GG
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 Toronado
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Oldsmobile Toronado
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Oldsmobile Toronado: 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LA69
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 Jeep J20
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Jeep J20
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Jeep J20: 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7RR
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 1985-1987 Pontiac Grand Am
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1985-1987 Pontiac Grand Am
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Pontiac Grand Am: 1985 1986 1987
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L7V1
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 1983-1988 Cadillac Cimarron
A-Premium®Part # APALR176
Alternator Rectifier Diode for 1983-1988 Cadillac Cimarron
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Cimarron: 1983 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9TX
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 Heat Sinks for 1986-1989 Ford F-150
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986-1989 Ford F-150
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-150: 1986 1987 1988 1989
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8ZS
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
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Alternator Rectifier Diode with Heat Sinks for 1986 Mercury Capri
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1986 Mercury Capri
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1986 Mercury Capri
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9A5
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
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Alternator Rectifier Diode with Heat Sinks for 1971-1974 De Tomaso Pantera
A-Premium®Part # APALR169
Alternator Rectifier Diode with Heat Sinks for 1971-1974 De Tomaso Pantera
52 Reviews
$19.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits De Tomaso Pantera: 1971 1972 1973 1974
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCVL
Note
This item is a 12V, 6–35A general diode with 119 mm OD and aluminum heat sinks.
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Alternator Rectifier Diode with Trio Capacitor for 1995-1998 Eagle Talon
A-Premium®Part # APALR067
Alternator Rectifier Diode with Trio Capacitor for 1995-1998 Eagle Talon
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Eagle Talon: 1995 1996 1997 1998
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015HNZ9
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 Aluminum Heat Sinks for 1995 Chevrolet Monte Carlo
A-Premium®Part # APALR172
Alternator Rectifier Diode with Aluminum Heat Sinks for 1995 Chevrolet Monte Carlo
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1995 Chevrolet Monte Carlo
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L8CH
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 1995-2000 Nissan Tsubame
A-Premium®Part # APALR062
Alternator Rectifier Diode for 1995-2000 Nissan Tsubame
52 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Tsubame: 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAWT
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 with Trio for 1993-2000 Mazda 626
A-Premium®Part # APALR103
Alternator Rectifier Diode with Trio for 1993-2000 Mazda 626
52 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mazda 626: 1993 1994 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LK8A
Note
This item is a 12 Volt, 8–35A block/ampere diode with an M5×44 mm battery post.
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Alternator Rectifier Diode for 1983-1985 Dodge Ram 50
A-Premium®Part # APALR131
Alternator Rectifier Diode for 1983-1985 Dodge Ram 50
52 Reviews
$19.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 50: 1983 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9UG
Note
【Note-1】 This item is a 12 Volt, 6–35A avalanche diode with 92.9 mm OD, an M5×43 mm battery post, and trio.
【Note-2】 This item comes with aluminum heat sinks.
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Alternator Rectifier Diode for 1983-1985 Mitsubishi Mighty Max
A-Premium®Part # APALR131
Alternator Rectifier Diode for 1983-1985 Mitsubishi Mighty Max
52 Reviews
$19.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Mighty Max: 1983 1984 1985
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L9DP
Note
【Note-1】 This item is a 12 Volt, 6–35A avalanche diode with 92.9 mm OD, an M5×43 mm battery post, and trio.
【Note-2】 This item comes with aluminum heat sinks.
Show less
Alternator Rectifier Diode for 1982-1986 Chevrolet Cavalier
A-Premium®Part # APALR173
Alternator Rectifier Diode for 1982-1986 Chevrolet Cavalier
52 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Cavalier: 1982 1983 1984 1985 1986
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGEG
Note
This item is a 12 Volt, 6–25A diode with 80 mm OD.
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Page 67 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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