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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 With Trio for 1987-1993 Dodge Ram 50Alternator Rectifier Diode With Trio for 1987-1993 Dodge Ram 50
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1987-1993 Dodge Ram 50
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Ram 50: 1987 1988 1989 1990 1991 1992 1993
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGX5
Note
This item is a 12 Volt, 6–35A block/ampere diode with 75 mm mounting length.
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Alternator Rectifier Diode With Trio for 1984-1988 Mitsubishi Cordia
A-Premium®Part # APALR098
Alternator Rectifier Diode With Trio for 1984-1988 Mitsubishi Cordia
52 Reviews
$30.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mitsubishi Cordia: 1984 1985 1986 1987 1988
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LGZL
Note
This item is a 12 Volt, 6–35A block/ampere diode with 75 mm mounting length.
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Alternator Rectifier Diode with Aluminum Heat Sinks for 1994 Buick Park Avenue
A-Premium®Part # APALR172
Alternator Rectifier Diode with Aluminum Heat Sinks for 1994 Buick Park Avenue
52 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1994 Buick Park Avenue
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015LAHP
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 2002-2006 Freightliner Sprinter 2500
A-Premium®Part # APALR151
Alternator Rectifier Diode with Negative Heat Sinks for 2002-2006 Freightliner Sprinter 2500
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Freightliner Sprinter 2500: 2002 2003 2004 2005 2006
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Quantity1
Item LocatedUnited States
ConditionNew
item #1015L83L
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 with Negative Heat Sinks for 2003-2006 Dodge Sprinter 3500
A-Premium®Part # APALR151
Alternator Rectifier Diode with Negative Heat Sinks for 2003-2006 Dodge Sprinter 3500
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Dodge Sprinter 3500: 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015LCH1
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 1986-1990 Nissan Sentra
A-Premium®Part # APALR060
Alternator Rectifier Diode for 1986-1990 Nissan Sentra
52 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Nissan Sentra: 1986 1987 1988 1989 1990
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1015L95Z
Note
【Note-1】 This item is a 12 Volt, 8–50A diode with 100 mm OD, an M6×44.4 mm battery post, and trio.
【Note-2】 This item comes with (M5+M4)×39.8 mm mounting bolt.
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Alternator Rectifier Diode for 2003-2005 Ford E-350 Club Wagon
A-Premium®Part # APALR091
Alternator Rectifier Diode for 2003-2005 Ford E-350 Club Wagon
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-350 Club Wagon: 2003 2004 2005
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XH3Z
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Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1992-1996 Ford E-150 Econoline
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-150 Econoline: 1992 1993 1994 1995 1996
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XGNU
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Alternator Rectifier Diode for 1993-2002 Ford F-150
A-Premium®Part # APALR091
Alternator Rectifier Diode for 1993-2002 Ford F-150
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-150: 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XDDC
Show less
Alternator Rectifier Diode for 2003-2006 Ford E-450 Super Duty
A-Premium®Part # APALR091
Alternator Rectifier Diode for 2003-2006 Ford E-450 Super Duty
52 Reviews
$32.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-450 Super Duty: 2003 2004 2005 2006
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XE4T
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Alternator Rectifier Diode for 2005-2008 Ford Mustang
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2005-2008 Ford Mustang
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford Mustang: 2005 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XHNY
Show less
Alternator Rectifier Diode for 2006-2008 Mercury Mountaineer
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2006-2008 Mercury Mountaineer
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XGG7
Show less
Alternator Rectifier Diode for 2004 2006-2008 Ford E-450 Super Duty
A-Premium®Part # APALR120
Alternator Rectifier Diode for 2004 2006-2008 Ford E-450 Super Duty
52 Reviews
$32.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-450 Super Duty: 2004 2006 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Kit Parts Included2x Rear Lower Forward Control Arm:xxx; 1x Rear driver Lower Rearward Control Arm:xxx
ConditionNew
item #1018XL7E
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Alternator Rectifier Diode with Copper Heat Sinks for 2003-2004 Honda Pilot
A-Premium®Part # APALR056
Alternator Rectifier Diode with Copper Heat Sinks for 2003-2004 Honda Pilot
52 Reviews
$50.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Honda Pilot: 2003 2004
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #1018SSU6
Note
This item comes With Copper Heat Sinks.
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Alternator Rectifier Diode for 2007-2008 Chevrolet Suburban 2500
A-Premium®Part # APALR093
Alternator Rectifier Diode for 2007-2008 Chevrolet Suburban 2500
52 Reviews
$46.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Chevrolet Suburban 2500: 2007 2008
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
10503581, 10510904, DR3580, RD-40HA, RD40HA
ConditionNew
item #1018SQ49
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Alternator Rectifier Diode for 2007-2010 Cadillac Escalade EXT
A-Premium®Part # APALR093
Alternator Rectifier Diode for 2007-2010 Cadillac Escalade EXT
52 Reviews
$46.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade EXT: 2007 2008 2009 2010
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
10503581, 10510904, DR3580, RD-40HA, RD40HA
ConditionNew
item #1018SNUQ
Show less
Alternator Rectifier Diode for 2007-2010 Cadillac Escalade
A-Premium®Part # APALR093
Alternator Rectifier Diode for 2007-2010 Cadillac Escalade
52 Reviews
$46.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Cadillac Escalade: 2007 2008 2009 2010
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
10503581, 10510904, DR3580, RD-40HA, RD40HA
ConditionNew
item #1018SS8A
Show less
Alternator Rectifier Diode for 2000-2002 Ford E-450 Econoline Super Duty
A-Premium®Part # APALR092
Alternator Rectifier Diode for 2000-2002 Ford E-450 Econoline Super Duty
52 Reviews
$33.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford E-450 Econoline Super Duty: 2000 2001 2002
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SRSK
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Alternator Rectifier Diode for 1994-2003 Ford F-150
A-Premium®Part # APALR092
Alternator Rectifier Diode for 1994-2003 Ford F-150
52 Reviews
$33.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Ford F-150: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
Part interchange
F5AZ10304AA, 136210, RF-053, FR2023, FODU10A366DAIP, F5AZ-10304-AA
ConditionNew
item #1018SQX6
Show less
Alternator Rectifier Diode for 2005 Ford Expedition
A-Premium®Part # APALR117
Alternator Rectifier Diode for 2005 Ford Expedition
52 Reviews
$32.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2005 Ford Expedition
Check if this fits your vehicle
Quantity1
Item LocatedUnited States
ConditionNew
item #101968VN
Note
12 Volt; 136mm OD; 8-35A General Diodes.
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Page 33 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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