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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 1988-1989 Dodge AriesAlternator Rectifier Diode for 1988-1989 Dodge Aries
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-1989 Dodge Aries
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VKVN
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 2001-2003 Lexus LS430
A-Premium®Part # APALR126
Alternator Rectifier Diode with Aluminum Heat Sinks for 2001-2003 Lexus LS430
52 Reviews
$37.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Lexus LS430: 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L6VZ
Note
This item is a 12 Volt, 12–50A press-fit/avalanche diode with 117 mm OD and an M8×40 mm battery post.
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Alternator Rectifier Diode with Heat Sinks for 2005-2006 GMC Yukon
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 GMC Yukon
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits GMC Yukon: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L848
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
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Alternator Rectifier Diode with Heat Sinks for 2001-2002 BMW Z3
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2002 BMW Z3
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW Z3: 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L89Z
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
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Alternator Rectifier Diode for 1988-2000 Dodge Grand Caravan
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-2000 Dodge Grand Caravan
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Grand Caravan: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VLRS
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Silverado 1500
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2005-2006 Chevrolet Silverado 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Silverado 1500: 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L87K
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode with Heat Sinks for 2001-2005 BMW 325i
A-Premium®Part # APALR085
Alternator Rectifier Diode with Heat Sinks for 2001-2005 BMW 325i
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits BMW 325i: 2001 2002 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAS5
Note
【Note-1】 This item is a 12 Volt, 6–50A press-fit/avalanche diode with 129 mm OD, an M8×22 mm battery post (L), and an M8×50 mm battery post (R).
【Note-2】 This item comes with 129 mm negative heat sink.
Show less
Alternator Rectifier Diode for 1988-2000 Dodge Caravan
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-2000 Dodge Caravan
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Caravan: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VN1A
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1990-1993 Dodge Ramcharger
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1990-1993 Dodge Ramcharger
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VR4G
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1995-1997 1999-2000 Dodge Ram 1500 Van
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1995-1997 1999-2000 Dodge Ram 1500 Van
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 1500 Van: 1995 1996 1997 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VN99
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1988-1993 Dodge Dynasty
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-1993 Dodge Dynasty
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VLCH
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1989 Dodge Diplomat
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1989 Dodge Diplomat
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VNNE
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1993-1997 Dodge Intrepid
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1993-1997 Dodge Intrepid
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VRY5
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1995-2000 2002-2004 Dodge Stratus
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1995-2000 2002-2004 Dodge Stratus
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Stratus: 1995 1996 1997 1998 1999 2000 2002 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VLR3
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1988 Dodge 600
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988 Dodge 600
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VQDV
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1988-1994 Dodge Shadow
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-1994 Dodge Shadow
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VR0T
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1988-2000 Dodge Dakota
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988-2000 Dodge Dakota
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Dakota: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VLVU
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1988 Dodge Mini Ram
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1988 Dodge Mini Ram
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VN6T
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1989-1994 Dodge Spirit
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1989-1994 Dodge Spirit
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VPWG
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
Alternator Rectifier Diode for 1994-2001 Dodge Ram 1500
A-Premium®Part # APALR128
Alternator Rectifier Diode for 1994-2001 Dodge Ram 1500
52 Reviews
$28.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 1500: 1994 1995 1996 1997 1998 1999 2000 2001
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1016VQPL
Note
【Note-1】 12 Volt, 103mm OD, 8-50A Ampere Diodes, M6×44mm Battery Post.
【Note-2】 This item comes with Ground Screw Hole.
【Note-3】 This item comes with Aluminum Heat Sinks.
Show less
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Page 5 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.

Related Categories

Alternator Voltage Regulator
Alternator Voltage Regulator
Alternator
Alternator
Fuel Pump
Fuel Pump
Water Pump
Water Pump